please share my blog

Hostgator Promotion Codes seems that blog going good please also share it to your friends

uncertainity principle

bohrs theory

hybrridization geometry and bond angles

sigma ad pi bonds 2

valence bond theory

how many post

A farmer wishes to fence his square field of side 20 m with barb wire. For this, he needs to erect posts every 5 m on the sides of the field. How many posts does he need to buy? Come back tomorrow for the correct answer to this teaser.

sigma and pi bonds part 1

hybridization 3d

hybridization

amazing hybridization very important in future studies

A snake befriended a hamster that was supposed to be his dinner

Aochan, a rat snake at the Mutsugoro Okoku Zoo, was cohabiting with his hamster friend Gohan for over a year. This was despite the fact that the hamster was introduced to his cage so that the hungry constrictor would eat him. Instead, the two animals got along swimmingly, and they even sometimes sleep together. Their unusual companionship has gotten the attention of the zookeepers, and visitors to the zoo make sure to visit the odd couple.

A mental condition exists that causes people’s brains to mix up their five senses.

This condition is called synthesia and it causes sufferers to simultaneously perceive multiple senses. Another form associates objects such as letters, shapes, or numbers with a sensory experience such as a smell, color, or a flavor. The most common type of synesthesia involves associating letters or numbers with a certain color. Which colors and letters are linked varies from person to person, but the connections are consistent on an individual basis. For example, one synesthete may see the color green in response to the letter C, while another may associate purple with C each time! The important and interesting thing is that the mental linkages do not change for each person - if they see orange in response to M, they ALWAYS see orange in response to M. The connections are not by choice, either. Each synesthete’s brain is hard-wired to form these relationships! Scientists do not know for sure what causes synesthesia, but they suspect neurons intended for one sensory system get “crossed” and are utilized within another system. It has also been theorized that everyone starts out with this condition at birth, and synesthetes are just people whose “wires” never got “uncrossed.” Estimates for the number of synesthetes out there are not very precise, varying from 1 in 200 to 1 in 100,000. Much of the reason for this is because many people are not even aware they have the condition. However, synesthesia is thought to be more common in people who are neurologically normal, female, and/or left-handed.

A 95-percent illuminated moon is half as bright as a full moon

Most observers probably can’t tell the difference between the Moon when 95% of it is lit up and when its 100% visible, but there’s a sizeable difference - 0.7 magnitudes. The apparent magnitude of any celestial body is a measure of how bright it appears to be from Earth - the brighter an object is, the lower its magnitude. Remarkably, just 2.4 days before and after a full moon, the Moon appears 50% dimmer!

air conditioning makes you fatter !!!!!!!

If you stop and think about this for a moment, it makes perfect sense. If an environment is too hot or too cold, your body has to burn calories in order to adjust its internal temperature accordingly. When you have air conditioning, your body does not have to do a thing because the temperature is ideal! Obviously, this wouldn’t have an overly dramatic effect on a person’s weight, but turning off the A/C is something to consider for people who are trying to lose a couple pounds here and there.

derivation of formula of volume sphere

The formula for the volume of the sphere is given by

 

 

Where, r = radius of the sphere

 

Derivation for Volume of the Sphere

The differential element shown in the figure is cylindrical with radius x and altitude dy. The volume of cylindrical element is...

 

The sum of the cylindrical elements from 0 to r is a hemisphere, twice the hemisphere will give the volume of the sphere. Thus,

 

From the equation of the circle x² + y² = r²; x² = r² - y².

            ok!

Worker ants live for only 45-60 days, but queen ants have been known to live as long as 29 years!

If it wasn't obvious already, the worker ants do all the WORK in the ant colony. This means foraging for food, looking after the colony's young, and defending their home for unwanted intruders. One nest in South America has had up to 700,000 members, so as you can plainly see, worker ants are basically expendable. The queen ant, on the other hand, has a unique job and therefore lives a significantly longer life than her workers. A queen of the species Lasius niger in Europe lived for 29 years in captivity! Queen ants lay all the eggs that grow into the colony's worker ants. A leafcutter ant queen in South America lived for 14 years and bred over 150 million worker ants in her lifetime!

why he not collapse !!!!!!!!!!!!!!!!!!!

A bomb goes off. Carnage. One person, only a few feet away, survives! How can this be?

41 percent of teens have fluorosis, a discoloration of the teeth that's caused by too much fluoride!

This comes from a study conducted from 1999 to 2004. Because of this, the Health and Human Services Department is recommending that the fluoride level in water be lowered. This is ironic, since the reasoning behind the fluoridation of water was for its health benefits. The introduction of fluoride into municipal water systems beginning in the 1950s was actually responsible for the decrease in tooth decay over the ensuing decades. Now the opposite problem is occurring: kids’ teeth are now streaked and discolored from all the fluoride they drink. Prolonged exposure to fluoride also increases the risk for bone damage.

similarities between abraham lincoln and john f kennedy

Abraham Lincoln was elected to Congress in 1846. John F. Kennedy was elected to Congress in 1946. Abraham Lincoln was elected President in 1860. John F. Kennedy was elected President in 1960. Both were shot in the back of the head in the presence of their wives. Both wives lost their children while living in the White House. Both Presidents were shot on a Friday. Lincoln's secretary was named Kennedy. Both were succeeded by Southerners named Johnson. Andrew Johnson, who succeeded Lincoln, was born in 1808. Lyndon Johnson, who succeeded Kennedy, was born in 1908. Lincoln was shot in the Ford Theatre. Kennedy was shot in a Lincoln, made by Ford. Lincoln was shot in a theater and his assassin ran and hid in a warehouse. Kennedy was shot from a warehouse and his assassin ran and hid in a theater. Booth and Oswald were assassinated before their trials.

cracking your bones doesnot cause arthiritis

Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.

Cracking your knuckles (or any of your joints) can have therapeutic benefits. When you crack one of your joints you are pulling the bones that are connected at the joint apart from each other. This process stimulates your tendons, relaxes your muscles, and loosens your joints. Chiropractors do this for spinal joints when your back is sore and stiff, but you can do this on your own for your knuckles, toes, knees, neck, etc. Unfortunately, there can be too much of a good thing. Cracking your knuckles will never lead to arthritis (despite what your mom keeps telling you), but scientists have discovered that it can cause tissue damage in the affected joints. Knuckle-cracking pulls your finger bones apart which stretches your ligaments. Too much stretching of your ligaments will cause damage to your fingers akin to the arm injuries sustained by a baseball pitcher who throws too many pitches. In addition to making your hand really sore, this ligament damage can also result in reduced grip strength. How does this work? Your joints, the places in your body where you can bend, are where your bones intersect and are held together by ligaments. These joints are surrounded by a liquid called synovial fluid. When you stretch your ligaments by pulling the bones apart to crack your knuckles a gas in the synovial fluid escapes and turns into a bubble. This process is called cavitation. Cavitation ends when the bubble eventually bursts, producing that popping sound we know and love. After that, your joints won't be able to crack for another 25-30 minutes while the gas gets reabsorbed into the synovial fluid.

what is proton ???

The proton is a subatomic hadron particle with the symbol p or p+ and a positive electric charge of 1 elementary charge. One or more protons are present in the nucleus of each atom, along with neutrons. The proton is also stable by itself. Free protons are emitted directly in some rare types of radioactive decay, and result from the decay of free neutrons from other radioactivity. They soon pick up an electron and become neutral hydrogen, which may then react chemically. Free protons may exist in plasmas or in cosmic rays in vacuum. The proton particle is composed of three fundamental particles: two up quarks and one down quark. It is about 1.6–1.7 fm in diameter. Description Protons are spin-½ fermions and are composed of three quarks,making them baryons (a sub-type of hadrons). The two up quarks and one down quark of the proton are held together by the strong force, mediated by gluons.The proton has an approximately exponentially decaying positive charge distribution with a mean square radius of about 0.8 fm. Protons and neutrons are both nucleons, which may be bound by the nuclear force into atomic nuclei. The nucleus of the most common isotope of the hydrogen atom is a lone proton. The nuclei of the heavy hydrogen isotopes deuterium and tritium contain one proton bound to one and two neutrons, respectively. All other types of atoms are composed of two or more protons and various numbers of neutrons. The number of protons in the nucleus determines the chemical properties of the atom and, thus, which chemical element is represented; it is the number of both neutrons and protons in a nuclide that determine the particular isotope of an element. Stability The spontaneous decay of free protons has never been observed, and the proton is therefore considered a stable particle. However, some grand unified theories of particle physics predict that proton decay should take place with lifetimes of the order of 1036 yr, and experimental searches have established lower bounds on the mean lifetime of the proton for various assumed decay products. Experiments at the Super-Kamiokande detector in Japan gave lower limits for proton mean lifetime of 6.6×1033 yr for decay to an antimuon and a neutral pion, and 8.2×1033 yr for decay to a positron and a neutral pion. Another experiment at the Sudbury Neutrino Observatory in Canada searched for gamma rays resulting from residual nuclei resulting from the decay of a proton from oxygen-16. This experiment was designed to detect decay to any product whatever, and established a lower limit to the proton lifetime of 2.1×1029 yr. However, protons are known to transform into neutrons through the process of electron capture (also called inverse beta decay). For free protons, this process does not occur spontaneously but only when energy is supplied. The equation is: p+ + e− → n + ν e The process is reversible; neutrons can convert back to protons through beta decay, a common form of radioactive decay. In fact, a free neutron decays this way, with a mean lifetime of about 15 minutes.

funny animation

how a gun works

plasma the 4th state of matter

find the next term

find the next charecter in following series

F,T,N,M,I,?

find the next term

solve the next term

O , T , T , F , ?

clock mystery

There are two clocks such that one clock gains 1 minute every hour and the other clock loses 1 minute every hour. If they show the correct time now, then after how many hours will they show a difference of 1 hour?








AnswerAfter 30 hours, the first clock will show 30 minutes more than the actual time, while the second clock will show 30 minutes less than the actual time, which totals to a difference of 1 hour.

some specialities

‎1.Rabbits and parrots can see behind themselves without even moving their heads!
2.Butterflies taste food by standing on top of it! Their taste receptors are in their feet unlike humans who have most on their tongue.
3.Most of the dust in your home is actually dead skin! Yuck!
4.Although the Stegosaurus dinosaur was over 9 metres long, its brain was only the size of a walnut.
5.Humans get a little taller in space because there is no gravity pulling down on them.
6.Because of the unusual shape of their legs, kangaroos and emus struggle to walk backwards.
7.A hippopotamus may seem huge but it can still run faster than a man.
8.Even if an analog clock is broken, at least it shows the correct time twice a day.
9.Sneezing with your eyes open is impossible.
10.The trickiest tongue twister in the English language is apparently "Sixth sick sheik’s sixth sheep’s sick". Give it a try and see for yourself

how many rooms !!!!!!

The manager of a guest house was facing a problem in allotting rooms to guests. If he allotted one room to each guest, then he had one extra guest. However, when he allotted one room to two guests, then he had one empty room. How many rooms and how many guests are we talking about?

Come back tomorrow for the correct answer to this teaser

chromotography a magic

is neutrions faster then light

so amazing world

first time machine discovery !!!!!!!!!!!!!!!!!

how the human brain works

how the human brain works

wilsons theorem

Here's an interesting characterization of primes but useless Wilson's Theorem. A number P is prime if and only if (P-1)! + 1 is divisible by P.Let's check: (2-1)!+1 = 2, which is divisible by 2. (5-1)!+1 = 25, which is divisible by 5. (9-1)!+1 = 40321, which is not divisible by 9 (cast out nines to see this). Pretty cool!

facts about salts

ffaaccttss about salts: 1. Until the 20th century, a bag of salt (called amoleh) is the base currency in Abyssinia (now Ethiopia) 2. The Amazing Salar de Uyuni, the world's largest salt flat denan size of 4000 square miles in Bolivia. when a thin layer of sea water above the sand, it becomes a mirror rara avis. This reflectivity makes it a very useful tool in the calibration of scientific equipment from outer space. useful in the calibration of scientific equipment from outer space. The salt flat also contains half the world's supply of lithium. 3. Salt is very important for our bodies. if you drink too much water, it will eliminate a lot of fluid containing sodium in the body and can lead to hyponatremia (complications of medical disease in which the body loses a lot of fluids containing sodium) that prove fatal. This is what killed Jennifer Strange who follow the competition "Hold your wee for a wii" 4. even so important, consuming too much salt can also be deadly. You need about 1 gram of salt in every kilogram of your weight and that is enough to kill you. (So if you weigh 50 kg, 50 grams of salt can kill you, less LBH so) This is used as a method of ritual suicide in China, especially in the nobility as the time it is very expensive salt 5. Good quality sea salt contains many minerals that are important to our bodies. The best type of sea salt should be slightly damp when it was taken from the sea 6. In the Middle Ages, salt was so expensive that is sometimes referred to as "white gold". At that time, there are specific transportation routes for connecting the inland city of salt from Lüneburg to the German Baltic coast. 7. Black violations made in India by salt water mixed with the seeds of Harad. The mixture was allowed to evaporate leaving a black lump of salt. When the salt evenly, the resulting powder into the color pink 8. In Guerande, France, salt is still collected in the traditional way by using the basket which must wait for the sea water flooded. This enacting of salt is very expensive and highly sought after, especially with the best quality which is called the Fleur de cells (flower of salt) 9. there is a common misconception that the Roman soldiers paid with salt (as salary). but they are paid with money sabenarnya normal reply. connection with the salt is possible by the fact that the Roman soldiers are protected when traveling to Rome Salt 10. before biblical Judaism was removed, mixed with salt to sacrifice animals to God. according to Moses in Leviticus 2:13 which states: "Whatsoever sacrifice thou offerest, thou shalt season it with salt, neither shalt thou take away the salt of the covenant of thy God from thy sacrifice. In all thy oblations thou shalt offer salt. "(Fear of translating). So salt is considered a symbol of wisdom. 11. After the aviation fuel was purified, mixed with salt it to remove all traces of water before it can be used. 12. Sodium chloride is formed when sodium metal reacts with chlorine gas is stable. This is the only family of rocks on a regular basis are eaten by humans 13. In the early 1800s salt 4 times more expensive as the price of beef which are in the border region - it is very important in maintaining human and livestock in order to stay alive 14. Only 6% of salt used in the United States is used in food, 17% are used for de-icing streets and highways in winter 15. In the late 17th century, salt was the goods carried by the leading cargo from the Caribbean to North America and vice versa. It is used for food the slaves on sugar plantations

some amazing facts

All the planets in our solar system rotate anticlockwise, except Venus. It is the only planet that rotates clockwise. Hummingbirds are the only animal that can also fly backwards. Insects do not make noises with their voices. The noise of bees, mosquitoes and other buzzing insects is caused by rapidly moving their wings. The cockroach is the fastest animal on 6 legs covering a meter a second. The word "listen" contains the same letters as the word "silent". The only 2 animals that can see behind itself without turning it's head are the rabbit and the parrot. A 'jiffy' is an actual unit of time for 1/100th of a second. India invented the Number System. Zero was invented by Aryabhatta. The whip makes a cracking sound because its tip moves faster than the speed of sound. A hippopotamus can run faster than a man. India never invaded any country in her last 10000 years of history. 'Hippopotomonstrosesquippedaliophobia' is the fear of long words. Didaskaleinophobia is the fear of going to school. Phobatrivaphobia is a fear of trivia about phobias !! It is impossible to lick your elbow. ( We know you gonna try this !!! ) A snail can sleep for 3 years. ( wow, lucky chap eh ? ) The names of the continents all end with the same letter with which they start In 1883 the explosion of the volcano Krakatoa put so much dust into the earth's atmosphere that sunsets appeared green and the moon appeared blue around the world for almost two years. "Almost" is the longest word in the English language with all the letters in alphabetical order. Twenty-Four-Karat Gold is not pure gold since there is a small amount of copper in it. Absolutely pure gold is so soft that it can be molded with the hands. Electricity doesn't move through a wire but through a field around the wire. Do you know the names of the three wise monkeys? They are: Mizaru (See no evil), Mikazaru (Hear no evil), and Mazaru (Say no evil ). 55 per cent of people yawn within 5 minutes of seeing someone else yawn. Reading about yawning makes most people yawn. hello, zzzzz zzzz ?

tricky computer

• The first counting device was the abacus, originally from Asia. It worked on a place-value notion meaning that the place of a bead or rock on the apparatus determined how much it was worth. • 1600s : John Napier discovers logarithms. Robert Bissaker invents the slide rule which will remain in popular use until 19??. • 1642 : Blaise Pascal, a French mathematician and philosopher, invents the first mechanical digital calculator using gears, called the Pascaline. Although this machine could perform addition and subtraction on whole numbers, it was too expensive and only Pascal himself could repare it. • 1804 : Joseph Marie Jacquard used punch cards to automate a weaving loom. • 1812 : Charles P. Babbage, the "father of the computer", discovered that many long calculations involved many similar, repeated operations. Therefore, he designed a machine, the difference engine which would be steam-powered, fully automatic and commanded by a fixed instruction program. In 1833, Babbage quit working on this machine to concentrate on the analytical engine. • 1840s: Augusta Ada. "The first programmer" suggested that a binary system shouled be used for staorage rather than a decimal system. • 1850s : George Boole developed Boolean logic which would later be used in the design of computer circuitry. • 1890: Dr. Herman Hollerith introduced the first electromechanical, punched-card data-processing machine which was used to compile information for the 1890 U.S. census. Hollerith's tabulator became so successful that he started his own business to market it. His company would eventually become International Business Machines (IBM). • 1906 : The vacuum tube is invented by American physicist Lee De Forest. • 1939 : Dr. John V. Atanasoff and his assistant Clifford Berry build the first electronic digital computer. Their machine, the Atanasoff-Berry-Computer (ABC) provided the foundation for the advances in electronic digital computers. • 1941 : Konrad Zuse (recently deceased in January of 1996), from Germany, introduced the first programmable computer designed to solve complex engineering equations. This machine, called the Z3, was also the first to work on the binary system instead of the decimal system. • 1943 : British mathematician Alan Turing developped a hypothetical device, the Turing machine which would be designed to perform logical operation and could read and write. It would presage programmable computers. He also used vacuum technology to build British Colossus, a machine used to counteract the German code scrambling device, Enigma. • 1944 : Howard Aiken, in collaboration with engineers from IBM, constructed a large automatic digital sequence-controlled computer called the Harvard Mark I. This computer could handle all four arithmetic opreations, and had special built-in programs for logarithms and trigonometric functions. • 1945 : Dr. John von Neumann presented a paper outlining the stored-program concept. • 1947 : The giant ENIAC (Electrical Numerical Integrator and Calculator) machine was developped by John W. Mauchly and J. Presper Eckert, Jr. at the University of Pennsylvania. It used 18, 000 vacuums, punch-card input, weighed thirty tons and occupied a thirty-by-fifty-foot space. It wasn't programmable but was productive from 1946 to 1955 and was used to compute artillery firing tables. That same year, the transistor was invented by William Shockley, John Bardeen and Walter Brattain of Bell Labs. It would rid computers of vacuum tubes and radios. • 1949 : Maurice V. Wilkes built the EDSAC (Electronic Delay Storage Automatic Computer), the first stored-program computer. EDVAC (Electronic Discrete Variable Automatic Computer), the second stored-program computer was built by Mauchly, Eckert, and von Neumann. An Wang developped magnetic-core memory which Jay Forrester would reorganize to be more efficient. • 1950 : Turing built the ACE, considered by some to be the first programmable digital computer. The First Generation (1951-1959) • 1951: Mauchly and Eckert built the UNIVAC I, the first computer designed and sold commercially, specifically for business data-processing applications. • 1950s : Dr. Grace Murray Hopper developed the UNIVAC I compiler. • 1957 : The programming language FORTRAN (FORmula TRANslator) was designed by John Backus, an IBM engineer. • 1959 : Jack St. Clair Kilby and Robert Noyce of Texas Instruments manufactured the first integrated circuit, or chip, which is a collection of tiny little transistors. The Second Generation (1959-1965) • 1960s : Gene Amdahl designed the IBM System/360 series of mainframe (G) computers, the first general-purpose digital computers to use intergrated circuits. • 1961: Dr. Hopper was instrumental in developing the COBOL (Common Business Oriented Language) programming language. • 1963 : Ken Olsen, founder of DEC, produced the PDP-I, the first minicomputer (G). • 1965 : BASIC (Beginners All-purpose Symbolic Instruction Code) programming language developped by Dr. Thomas Kurtz and Dr. John Kemeny. The Third Generation (1965-1971) • 1969 : The Internet is started. (See History of the Internet) • 1970 : Dr. Ted Hoff developed the famous Intel 4004 microprocessor (G) chip. • 1971 : Intel released the first microprocessor, a specialized integrated circuit which was ale to process four bits of data at a time. It also included its own arithmetic logic unit. PASCAL, a structured programming language, was developed by Niklaus Wirth. The Fourth Generation (1971-Present) • 1975 : Ed Roberts, the "father of the microcomputer" designed the first microcomputer, the Altair 8800, which was produced by Micro Instrumentation and Telemetry Systems (MITS). The same year, two young hackers, William Gates and Paul Allen approached MITS and promised to deliver a BASIC compiler. So they did and from the sale, Microsoft was born. • 1976 : Cray developed the Cray-I supercomputer (G). Apple Computer, Inc was founded by Steven Jobs and Stephen Wozniak. • 1977 : Jobs and Wozniak designed and built the first Apple II microcomputer. • 1970 : 1980: IBM offers Bill Gates the opportunity to develop the operating system for its new IBM personal computer. Microsoft has achieved tremendous growth and success today due to the development of MS-DOS. Apple III was also released. • 1981 : The IBM PC was introduced with a 16-bit microprocessor. • 1982 : Time magazine chooses the computer instead of a person for its "Machine of the Year." • 1984 : Apple introduced the Macintosh computer, which incorporated a unique graphical interface, making it easy to use. The same year, IBM released the 286-AT. • 1986 : Compaq released the DeskPro 386 computer, the first to use the 80036 microprocessor. • 1987 : IBM announced the OS/2 operating-system technology. • 1988 : A nondestructive worm was introduced into the Internet network bringing thousands of computers to a halt. • 1989 : The Intel 486 became the world's first 1,000,000 transistor microprocessor. • 1993s: The Energy Star program, endorsed by the Environmental Protection Agency (EPA), encouraged manufacturers to build computer equipment that met power consumpton guidelines. When guidelines are met, equipment displays the Energy Star logo. The same year, Several companies introduced computer systems using the Pentium microprocessor from Intel that contains 3.1 million transistors and is able to perform 112 million instructions per second (MIPS)

what should he take !!!!!!

Mohan went to a supermarket and bought an oven, a hat, an aquarium and a map. Apart from these four items, he bought another item. Which of the following items did he buy? A. Fish B. Necklace C. Apple D. Shirt

find the next term

Which number comes next in the following series? 3, 1, 4, 1, 5, 9, 2, ?

A satellite will fall to Earth soon!

According to NASA, the Upper Atmosphere Research Satellite (UARS) is expected to fall to Earth tomorrow (Friday, September 23, 2011) after using up all its fuel. It’s not entirely certain where on Earth the 6.5-ton satellite (or rather, pieces of it) will land when that happens. Much of the satellite will be burned upon reentering the Earth’s atmosphere. An expected 1,170 pounds of the remaining satellite parts will fall to Earth in roughly 26 large pieces. NASA predicts that the landing site will be somewhere between southern South America and northern Canada. NASA stressed that it’s unlikely the satellite will hit any towns or cities, and there’s only a 1 in 3,200 chance that any of the pieces will hit a human being. UARS has been in space since 1991. The spacecraft was made using $750 million of titanium, aluminum, steel, and beryllium. Supposedly it contains no hazardous materials. Even so, FEMA has prepared a response in case it hits the United States, there’s a warning to not touch any of its parts after it lands, and the Air Force is monitoring the landing. In the past, satellites carrying toxic chemicals have had to be shot out of the sky with missiles!

christmas in summer !!111

Karan was born on Christmas (25th December) during the summer months. How is this possible?

metronological department

During the monsoons, the Metrological Department noted a pattern in x days. During these x days, it rained for 13 days; and that too, only in the mornings or afternoons. Also, whenever it rained in the morning, the sun came out in the afternoon and when it rained in the afternoon, the sun had come out in the morning. Overall, there were 11 mornings and 12 afternoons when the sun had come out. Assuming that the sun doesn’t come out when it rains and always comes out when it doesn’t rain, what is the value of x? Come back tomorrow for the correct answer to this tease

street lights

If a 50 m long road has streetlights every 5 m on one side, then how many streetlights are there?

chess cheating !!!!!!!!!!!!!!!!!!!!

Two men play five games of chess and each wins an equal number of games. How is this possible?

police department !!!!!!!!!!!!!!

The police are looking for Karan, a thief. Acting on a tip, the police raid a warehouse, where they find a mechanic, an electrician and a plumber. One of them is the thief. Within seconds, the police arrest the plumber. How could they be so sure?

marbles mystery

Ramesh has five boxes containing 4, 8, 9, 12 and 100 red and blue marbles. One box contains only red marbles; another contains only blue marbles; while the other three contain both red and blue marbles. When his younger brother Rakesh took a box, Ramesh exclaimed “Now, I have an equal number of red and blue marbles!” Which box did Rakesh take?

2 times one person born !!!!!!

A man was 50 years old in 2000 but 40 years old in 2010. How is this possible?

how he manage to save his life !!!

A king condemned a man to death. The man had to choose between three rooms – the first was full of burning coal, the second had gladiators with swords and axes, while the third had ferocious leopards and tigers that hadn’t eaten for two years. The man chose a room and lived. How?

why is sun hot

why sun is hot The Sun is hot, as the more astute of you will have noticed. It is hot because its enormous weight – about a billion billion billion tons – creates vast gravity, putting its core under colossal pressure. Just as a bicycle pump gets warm when you pump it, the pressure increases the temperature. Enormous pressure leads to enormous temperature. If, instead of hydrogen, you got a billion billion billion tons of bananas and hung it in space, it would create just as much pressure, and therefore just as high a temperature. So it would make very little difference to the heat whether you made the Sun out of hydrogen, or bananas, or patio furniture. Edit: this might be a little confusing. The heat caused by the internal pressure would be similar to that of our Sun. However, if it's not made of hydrogen, the fusion reaction that keeps it going wouldn't get under way: so a banana Sun would rapidly cool down from its initial heat rather than burning for billions of years. Thanks to people who pointed this out. All the matter that makes up the human race could fit in a sugar cube Atoms are 99.9999999999999 per cent empty space. As Tom Stoppard put it: "Make a fist, and if your fist is as big as the nucleus of an atom, then the atom is as big as St Paul's, and if it happens to be a hydrogen atom, then it has a single electron flitting about like a moth in an empty cathedral, now by the dome, now by the altar." If you forced all the atoms together, removing the space between them, crushing them down so the all those vast empty cathedrals were compressed into the first-sized nuclei, a single teaspoon or sugar cube of the resulting mass would weigh five billion tons; about ten times the weight of all the humans who are currently alive. Incidentally, that is exactly what has happened in a neutron star, the super-dense mass left over after a certain kind of supernova. Events in the future can affect what happened in the past The weirdness of the quantum world is well documented. The double slit experiment, showing that light behaves as both a wave and a particle, is odd enough – particularly when it is shown that observing it makes it one or the other. But it gets stranger. According to an experiment proposed by the physicist John Wheeler in 1978 and carried out by researchers in 2007, observing a particle now can change what happened to another one – in the past. According to the double slit experiment, if you observe which of two slits light passes through, you force it to behave like a particle. If you don’t, and observe where it lands on a screen behind the slits, it behaves like a wave. But if you wait for it to pass through the slit, and then observe which way it came through, it will retroactively force it to have passed through one or the other. In other words, causality is working backwards: the present is affecting the past. Of course in the lab this only has an effect over indescribably tiny fractions of a second. But Wheeler suggested that light from distant stars that has bent around a gravitational well in between could be observed in the same way: which could mean that observing something now and changing what happened thousands, or even millions, of years in the past. Almost all of the Universe is missing There are probably more than 100 billion galaxies in the cosmos. Each of those galaxies has between 10 million and a trillion stars in it. Our sun, a rather small and feeble star (a “yellow dwarf”, indeed), weighs around a billion billion billion tons, and most are much bigger. There is an awful lot of visible matter in the Universe. But it only accounts for about two per cent of its mass. We know there is more, because it has gravity. Despite the huge amount of visible matter, it is nowhere near enough to account for the gravitational pull we can see exerted on other galaxies. The other stuff is called “dark matter”, and there seems to be around six times as much as ordinary matter. To make matters even more confusing, the rest is something else called “dark energy”, which is needed to explain the apparent expansion of the Universe. Nobody knows what dark matter or dark energy is. Things can travel faster than light; and light doesn’t always travel very fast The speed of light in a vacuum is a constant: 300,000km a second. However, light does not always travel through a vacuum. In water, for example, photons travel at around three-quarters that speed. In nuclear reactors, some particles are forced up to very high speeds, often within a fraction of the speed of light. If they are passing through an insulating medium that slows light down, they can actually travel faster than the light around them. When this happens, they cause a blue glow, known as “Cherenkov radiation ”, which is (sort of) comparable to a sonic boom but with light. This is why nuclear reactors glow in the dark. Incidentally, the slowest light has ever been recorded travelling was 17 meters per second – about 38 miles an hour – through rubidium cooled to almost absolute zero, when it forms a strange state of matter called a Bose-Einstein condensate. Light has also been brought to a complete stop in the same fashion, but since that wasn't moving at all, we didn't feel we could describe that as "the slowest it has been recorded travelling". There are an infinite number of mes writing this, and an infinite number of yous reading it According to the current standard model of cosmology, the observable universe – containing all the billions of galaxies and trillions upon trillions of stars mentioned above – is just one of an infinite number of universes existing side-by-side, like soap bubbles in a foam. Because they are infinite, every possible history must have played out. But more than that, the number of possible histories is finite, because there have been a finite number of events with a finite number of outcomes. The number is huge, but it is finite. So this exact event, where this author writes these words and you read them, must have happened an infinite number of times. Even more amazingly, we can work out how far away our nearest doppelganger is. It is, to put it mildly, a large distance: 10 to the power of 10 to the power of 28 meters. That number, in case you were wondering, is one followed by 10 billion billion billion zeroes Black holes aren’t black They’re very dark, sure, but they aren’t black. They glow, slightly, giving off light across the whole spectrum, including visible light. This radiation is called “Hawking radiation”, after the former Lucasian Professor of Mathematics at Cambridge University Stephen Hawking, who first proposed its existence. Because they are constantly giving this off, and therefore losing mass, black holes will eventually evaporate altogether if they don’t have another source of mass to sustain them; for example interstellar gas or light. Smaller black holes are expected to emit radiation faster compared to their mass than larger ones, so if – as some theories predict – the Large Hadron Collider creates minuscule holes through particle collisions, they will evaporate almost immediately. Scientists would then be able to observe their decay through the radiation. The fundamental description of the universe does not account for a past, present or future According to the special theory of relativity, there is no such thing as a present, or a future, or a past. Time frames are relative: I have one, you have one, the third planet of Gliese 581 has one. Ours are similar because we are moving at similar speeds. If we were moving at very different speeds, we would find that one of us aged quicker than the other. Similarly, if one of us was closer than the other to a major gravity well like the Earth, we would age slower than someone who wasn’t. GPS satellites, of course, are both moving quickly and at significant distances from Earth. So their internal clocks show a different time to the receivers on the ground. A lot of computing power has to go into making your sat-nav work around the theory of special relativity. A particle here can affect one on the other side of the universe, instantaneously When an electron meets its antimatter twin, a positron, the two are annihilated in a tiny flash of energy. Two photons fly away from the blast. Subatomic particles like photons and quarks have a quality known as “spin”. It’s not that they’re really spinning – it’s not clear that would even mean anything at that level – but they behave as if they do. When two are created simultaneously the direction of their spin has to cancel each other out: one doing the opposite of the other. Due to the unpredictability of quantum behaviour, it is impossible to say in advance which will go “anticlockwise” and the other “clockwise”. More than that, until the spin of one is observed, they are both doing both. It gets weirder, however. When you do observe one, it will suddenly be going clockwise or anticlockwise. And whichever way it is going, its twin will start spinning the other way, instantly, even if it is on the other side of the universe. This has actually been shown to happen in experiment (albeit on the other side of a laboratory, not a universe). The faster you move, the heavier you get If you run really fast, you gain weight. Not permanently, or it would make a mockery of diet and exercise plans, but momentarily, and only a tiny amount. Light speed is the speed limit of the universe. So if something is travelling close to the speed of light, and you give it a push, it can’t go very much faster. But you’ve given it extra energy, and that energy has to go somewhere. Where it goes is mass. According to relativity, mass and energy are equivalent. So the more energy you put in, the greater the mass becomes. This is negligible at human speeds – Usain Bolt is not noticeably heavier when running than when still – but once you reach an appreciable fraction of the speed of light, your mass starts to increase rapidly.

first

this is my first blog . hope it go good it has many built in brain teasers , mind blowing fact , brain bashers , mathematical problems which will make your mind running fast , use this blog every day . i like blogging that s why i have made this blog . this blog has many built in pages what you have to do is switch between pages , follow blog , read the matter , become happy , and switch off your pc .

thanks for submitting form