Saturday, 30 November 2013

WHY DOES COLD TEMPERATURE AFFECTS THE BOUNCE OF THE BASKETBALL?































ANSWER:-

A basketball depends on pressurized air for its bounciness. When the ball hits the court, it compresses that air and the air stores energy in its compression. The ball's rebound is powered by the air returning to its original characteristics. The ball's skin, on the other hand, isn't all that bouncy and doesn't store energy well. To bounce well, the basketball needs to store energy in its air during the bounce, not in its skin. That's why it's important to have an air pump so that you can keep your basketball properly inflated.



Friday, 29 November 2013

WHY DOES COMBINING RED, GREEN AND BLUE LIGHT CREATE WHITE LIGHT?


ANSWER :- 

Our eyes sense color by measuring the relative brightnesses of the red, green, and blue portions of the light spectrum. When all three portions of the spectrum are present in the proper amounts, we perceive white.

The color sensing cells in our eyes are known as cone cells and they can detect only three different bands of color. One type of cone cell is sensitive to light in the red portion of the spectrum, the second type is sensitive to the green portion of the spectrum, and the third type is sensitive to the blue portion of the spectrum.

Their sensitivities overlap somewhat, so light in the yellow and orange portions of the spectrum simultaneously affects both the red sensitive cone cells and the green sensitive ones. Our brains interpret color according to which of three cone cells are being stimulated and to what extent. When both our red sensors and our green sensors are being stimulated, we perceive yellow or orange.

WHY DO EYES PRODUCE TEARS WHEN TEAR GAS IS USED?

ANSWER :-

Tear gas, in the form of CN (chlorocetophenone) or CS (chlorobenzylidemalononitrile) is often used for law enforcement. Today, CS has largely replaced CN and is probably the most widely used tear gas internationally. The tear gas is either launched in the form of grenades or aerosol cans so that the liquid becomes an aerosol.

Both CN and CS are skin irritants — they irritate mucous membranes in the eyes, nose, mouth and lungs, and cause tearing, sneezing, coughing. The more moisture on our body, the faster the acid is created and tissues are damaged, causing pain. When it is contacted with moist eyes, it affects mucous membranes which initiates glands to shed more tears.

Wednesday, 27 November 2013

HOW DO PEARL FORM?


ANSWER :-

Pearls are formed from pearl oysters. They are part of a group of animals belonging to the group bivalvia. This includes snails, slugs etc. Pearls are grown in live oysters far below the surface of the sea. These oysters have a hard shell covering their body. In between the shell and its body there is an empty space called the mantle.

A natural pearl begins its life as a foreign object, such as a parasite or piece of shell that accidentally lodges itself inside the mantle from where it cannot be expelled. It causes some irritation to the oyster. To ease this irritant, the oyster's body begins to secrete a smooth, hard crystalline substance around the irritant.

This substance is called `nacre'. As long as the irritant remains within its body, the oyster will continue to secrete nacre around it, layer upon layer. Over time, the irritant will be completely encased by the silky crystalline coatings. And the result is a lustrous pearl.

Nacre is composed of microscopic crystals of calcium carbonate, aligned perfectly with one another, so that light passing along the axis of one crystal is reflected and refracted by another to produce a rainbow of light and colour.

Pearls can be cultured from oysters artificially in an almost identical fashion. The only difference is that a person carefully implants the irritant in the oyster, rather than leaving it to chance. Actually we can isolate strains of oysters that possess superior pearl-producing qualities.

Saturday, 23 November 2013

WHY DOES PEEPER MAKE YOU SNEEZE?

ANSWER :- 

Because the chemical piperine, an irritant, gets into the nose.
A sneeze is a reflex that is triggered when nerve endings inside the mucous membrane of the nose are stimulated.
Pepper, be it white, black, or green, contains an alkaloid of pyridine called piperine. Piperine acts as an irritant if it gets into the nose. It stimulates (or irritates) the nerve endings inside the mucous membrane. This stimulation will cause you to sneeze. Actually, the nose wants to kick out this irritant and the only way it knows how to do this is by sneezing."




WHAT'S THE DIFFERENCE BETWEEN DVD PLAYER AND BLU-RAY PLAYER?


ANSWER :-

DVD and Blu-ray™ are two types of optical storage discs, commonly used for storing movies and other video. Although the discs look similar, there are significant differences. The difference between a DVD player and a Blu-ray™ player is the laser technology that's used to record and play back the data. A Blu-ray™ player can play most DVDs; however, a DVD player cannot play Blu-ray™ discs.

DVDs

Digital Video Discs (DVDs) were developed in the 1990s, and came to market in the second half of the decade. Information is written to a DVD with a 650 nanometer (nm) red laser, which creates microscopic bumps in a groove on the disc. A DVD player contains a laser which can read the bumps in the spiral track of data. The most common type of disc can hold 4.7 GB of data.

The quality of audio and video recorded on a DVD is very high; in most cases, video is encoded in MPEG-2 format, which offers high definition, 720 pixel resolution. Surround sound options are also often available. Many DVDs also include interactive menus, additional audio tracks, and other special features.

HOW DOES A SIM CARD FUNCTION IN A CELL PHONE?

ANSWER :-


It is a plastic card, which is called a subscriber identity module (SIM). It consists of an integrated microprocessor chip, which keeps data relating to a subscriber, and provides communication with GSM network.

Territory covered with GSM network is divided into hexagonal cells. The diameter of each hexagonal cell may be from 400 m up to 50 km, which consists of base station that provides communication — receive and transmission, and antennae.

All GSM cellular communication telephone cells are preformed via these antennae and stations, which are regulated by switching centre.


Switching Centre provides communication between city telephone network, base stations and other cellular communication operators.

Thursday, 21 November 2013

WHAT IS THE DIFFERENCE BETWEEN 1080p AND 1080i?

High definition television (HDTV) is a welcome change from the old standard analog TVs, but there is no shortage of confusion when it comes to choosing a unit. One of the most asked questions is what is the difference between a 1080i and 1080p HDTV? The question itself mixes apples and oranges but marketing has led to much of the confusion.

ANSWER :-

Wednesday, 20 November 2013

WHAT IS THE DIFFERENCE BETWEEN NTSC AND PAL ?


ANSWER :-

Most countries in North and South America, including the US and Canada, utilize the National Television Standards Committee (NTSC) format, while Europe, Australia and parts of Asia use a competing format called Phase Alternating Line (PAL). The major distinction between these two formats is the rate at which a broadcast is displayed on a TV screen: NTSC displays at 30 frames per second (fps), while PAL provides 25 fps. Each format also uses a different number of lines on an old analog TV display when showing the signal, creating two different resolutions. The widespread adoption of High-Definition Televisions (HDTVs) by many consumers has not eliminated this difference, however, since older broadcasting methods have influenced digital signal playback.


Primary Difference

The differences between these formats really start with the electrical power system behind the transmissions viewed on a TV. In the US and countries like Canada and Mexico, electrical power is generated at 60 hertz, so for technical reasons the NTSC signal is also sent out at 60 "fields" per second. The first field accounts for all of the odd-numbered lines on a screen, while the second one includes the even-numbered lines. Since most analog televisions use an interlaced system, this means that 30 fields of one type are sent out, along with 30 fields of the other type each second.

WHY WON'T WOODEN DOOR CLOSE IN THE WINTER ?

This happens with everyone. This is a world wide problem but what is the reason behind it ? Why our wooden doors not close in winter. In the summer everything is ok, the standard wooden door opens and closes as predicted, but in the winter time it drives us crazy! It just won't close! Seems that it doesn't fit where it belongs. 

So the question is, what physical processes are standing behind that unfitting?


ANSWER :- 


Friday, 15 November 2013

WHY CAN'T YOU USE YOUR CELL PHONE ON AN AIRPLANE ?

Do you know why cell phone are banned on the airplane. Why government make this rule to not to use the cell phones on the plane?






























ANSWER :-

In 1991, the Federal Communications Commission (FCC) banned passengers from using their cell phones while on board an airplane that is in flight. The ban was instituted because the FCC suspected that the radio frequency emitted by cell phones could malfunction an airplane's equipment systems. In complying with this rule, different airlines have instituted different policies about when phones can be turned on and off. In 2005, the FCC announced that it might consider lifting the ban on the use of cell phones on airplanes, with certain restrictions.

WHY DOES ICE FLOAT ON WATER ?


ANSWER :-

Solid ice is less dense than liquid water, meaning that a liter of ice has less mass (and weighs less) than a liter of water. Any object that is less dense than water will float at the surface of water, so ice floats.
That lower-density objects float on water is a consequence of Archimedes' principle: when an object displaces a fluid, it experiences an upward buoyant force equal in amount to the weight of the displaced fluid. If you submerge a piece of ice completely in water, that piece of ice will experience an upward buoyant force that exceeds the ice's weight because the water it displaces weighs more than the ice itself. The ice then experiences two forces: its downward weight and the upward buoyant force from the water. Since the upward force is stronger than the downward force, the ice accelerates upward. It rises to the surface of the water, bobs up and down a couple of times, and then settles at equilibrium.

WHAT IS GLUCOSE AND HOW DOES IT AFFECT US ?


What is Glucose?

Glucose is a form of simple sugar, which is a carbohydrate. Our cells need it for energy. Glucose is important for cellular respiration. Chemically, glucose is made up of six carbon atoms, twelve hydrogen atoms, and six oxygen atoms. Naturally, glucose can be found in plants and is one of the products needed for photosynthesis. Glucose is found in fungi and starchy plants. Animals synthesize glucose in the liver and kidneys. Commercially, glucose is found in food products such as corn, rice, wheat products, and potatoes.

What does glucose do?

Glucose is an energy source for the body. It is the main source of energy for the brain, and when glucose levels are low, person's mental abilities may be impaired. We get most of our glucose from sugar and starchy foods. Our bodies break down these foods and convert them into glucose.

What happens if I consume too little glucose?

People who consume too little glucose (usually by not eating enough food in general) become hypoglycemic. This results in low energy levels and can lead to fainting.

What happens if I consume too much glucose?

Since glucose is distributed through our bodies by our bloodstreams, where it meets and reacts with insulin, ingesting too much glucose will overwhelm the body. When the body's glucose level is too high, the body becomes hyperglycemic which means you have too much sugar and too little insulin. Hypoglycemia and diabetes are disorders that that result when the body cannot regulate glucose and/ or insulin levels, and can happen after years of consuming too much glucose.

How does too much glucose lead to weight gain?

The body converts excess glucose into fat and stores it in the body. Some foods convert to glucose quicker than others convert and are more readily stored as fat. These foods are known as '˜bad carbs' and are usually processed such as white rice, enriched pasta and breads, and most baked desserts.

Will lowering the amount glucose I consume help me to lose weight?

While lowering your glucose (or carbohydrate) levels will help you to lose weight, and probably lose it quickly (Atkins Diet), such a diet is almost impossible to maintain over the long run. It is wiser to consume fewer foods that will quickly convert to glucose such as sugars, and processed grains. Whole grain foods and most vegetables should be eaten regularly along with sources of proteins and fats for a balanced diet.

Thursday, 14 November 2013

WHY DO WE SWEAT IN FEAR ?


ANSWER :-

Fright and fear are emergency states we meet occasionally. In such states the hypothalamus is activated. The result is a wide spread reaction throughout the body called `alarm or stress response'. The stress first excites the sympathetic nervous system, a sub-division of autonomic nervous system of our body.

In such instances the sympathetic nervous system discharges almost as complete unit, a phenomenon called mass discharge. This increases in many different ways the ability of the body to perform vigorous muscle activity.

This stimulation of sympathetic nerves also induces the sweat glands found in the skin all over in our body to secrete large quantity of sweat .

Even though the sympathetic nerve fibres are in general adrenergic fibres (the fibres that secrete adrenal hormone called nor-epinephrine) those fibres innervated to the sweat glands of the skin are cholenergic fibres (fibres that secrete actylcholine as neurohumour) like parasympathetic nerve fibres.

So sweating during fear or any other emergency stress is a sympathetic function. But the normal and primary sweating (sweating during hot and humid weather) is a parasympathetic function, which is also stimulated by the centres in the hypothalamus. However, these parasympathetic nerve fibres are cholenergic fibres.

WHAT IF YOU TRAVELED FASTER THAN THE SPEED OF LIGHT ?

Really what happen if we will be able to travel faster than the speed of light. Everything changed, lots of new inventions takes place . We will be able to see our imagination world. But travelling with the speed of light is a hard task happen in our world. There are lot of parameter which takes place in this concept. One of the biggest is represented by Einstein's famous equation, E = mc², where E is energy, m is mass and c is the speed of light. According to this equation, mass and energy are the same physical entity and can be changed into each other. Because of this equivalence, the energy an object has due to its motion will increase its mass. In other words, the faster an object moves, the greater its mass. This only becomes noticeable when an object moves really quickly. If it moves at 10 percent the speed of light, for example, its mass will only be 0.5 percent more than normal. But if it moves at 90 percent the speed of light, its mass will double.

ANSWER :- 

Wednesday, 13 November 2013

WHY DO BIRDS FLY IN FORMATION SHAPED LIKE THE ALPHABET 'V' ?


ANSWER :- 

The bird in the lead (at the forward point of the `V' formation) works the hardest by being the first to `break through' the air, which offers resistance to its flight.

Just as a boat leaves a V-shaped wake of smoother water behind it, the lead bird leaves a V-shaped wake of slightly `smoother' air behind it (actually the lead bird creates a trail of air turbulence that helps lift along the V-shaped direction), and it is a bit easier for the other birds to fly in the wake of the lead bird.

If you watch a V-formation carefully, you'll notice that the lead bird does not stay in that position for very long and will drop back into the formation, while another, not-as-tired bird takes the lead, breaking through the air first.

WHY DOES CHOPPING OF ONION MAKE US CRY ?

Every time we chop the onion it make us cry. Do you know why this happen. Why only onion make us cry? Do you know what is the reason behind it. 

Onions produce the chemical irritant known as syn-propanethial-S-oxide. It stimulates the eyes' lachrymal glands so they release tears. Scientists used to blame the enzyme allinase for the instability of substances in a cut onion. Recent studies from Japan, however, proved that lachrymatory-factor synthase, (a previously undiscovered enzyme) is the culprit (Imani et al, 2002).

ANSWER :- 


Tuesday, 12 November 2013

WHY DOES THE EARTH SPIN ?

You have to admit, it doesn't feel like you're spinning around the center of the Earth at hundreds of miles an hour, so it's not hard to cut our scientific forebears some slack for assuming the Earth was stationary and that the sun rotated around it. Thankfully, Copernicus set the record straight with his heliocentric model, and we now know that the Earth spins on its axis as it revolves around the sun. But why does our planet spin in the first place?

ANSWER :- 

WHY IS BOILING WATER LOUD ?

A lot of the times we see water in electric kettle makes the most noise sixty to ninety seconds before the water comes to a full boil. We have been fooled many times by the noisy kettle, only to discover that the water was not yet hot enough for tea. The kettle is only at a full boil after the noise has subsided.

We have noticed the same phenomenon with many other kettles, including conventional kettles on kitchen ranges; it is not a peculiarity of this electric kettle.

Why does the boiling become quieter as the water reaches full boil?



ANSWER :- 

WHY HOT WATER TURNS TO ICE FASTER THAN COLD WATER ?

This question still don't have a specific any answer more than one scientist worked on this question and unable to come out with a correct answer to this question. A more cautious person, Dr. D.G. Osborne of University College at Dar es Salaam, Tanzania, commented on this problem by stating, "No questions should be ridiculed, for everyday events are seldom as simple as they seem and it is dangerous to pass a superficial judgment on what can and cannot happen." 

The best explanation given by Canadian scientist G.S. Kell, writing in the American Journal of Physics in 1969. Dr. Kell presents calculations and experiments which show that an open container of almost-boiling water cooled only by evaporation from the top surface can lose, through evaporation, up to 26% of the original mass of water by the time the remaining 74% turns to ice. That evaporation takes place relatively quickly from the surface of hot water and very slowly from a surface of cold water. 

According to above theory the answer will be.

ANSWER :- 

Monday, 11 November 2013

WHAT MAKES YOU DIZZY WHEN YOU SPIN?

If you have ever spun around like a top or rolled down a hill, then you have probably experienced dizziness or vertigo. Some people even get dizzy just getting up too fast from the sofa. When you become dizzy, a part of your body that senses motion has sent the wrong signal to your brain. An amazing system in your inner ear is the key to dizziness.
The body senses whether it is upright or lying down or whether it is moving or standing still through the vestibular system, which is in the upper portion of the inner ear.  Here is how the system senses orientation with respect to gravity:
ANSWER :-

WHY AREN'T KEYBOARDS IN ALPHABETICAL ORDER?

We always see our keyboard and only 1 question arise that why aren't keys arranged in alphabetical order. So what is the reason behind it. Why these keys are not arranged in alphabetical order. What is the history behind it? 

ANSWER :-

Sunday, 10 November 2013

WHY PETROL FIRE CANNOT BE PUT OUT WITH WATER ?

Many times we hear that if there is a petrol fire people do not use water to put it out. Did you know what is the reason behind it. Why people do not use water to put out petrol fire. In every kind of fire we use fire but why not in petrol fire. 


   
ANSWER :-

WHICH HOUSEHOLD PRODUCT CAN BE USED AS RUST REMOVER AND WHY?

In our daily life we use lot of metal objects. But we also know that that rusting is the enemy of metal. Rust eat the metal and make them weak. So how we can save our metal objects if rusting is started. 

Some of the definition of rust.
1. Any of various powdery or scaly reddish-brown or reddish-yellow hydrated ferric oxides formed on iron and iron-containing materials by low-temperature oxidation in the presence of water.
2. Any of various metallic coatings, especially oxides, formed by corrosion.
3. A stain or coating resembling iron rust.
4. Deterioration, as of ability, resulting from inactivity or neglect.


ANSWER :-

Saturday, 9 November 2013

DROUGHT, NATURAL DISASTERS STILL WHY CAN'T WE CONVERT SEA WATER INTO DRINKING WATER?

Seems strange that water should be such a scarce resource when our planet is drenched in 326 million trillion gallons of the stuff. But it turns out that less than one-half of 1 percent of it is drinkable. Out of the rest, 98 percent is oceanic salt water and 1.5 percent remains locked up in icecaps and glaciers. The stark irony of Samuel Coleridge's immortal line "Water, water, everywhere / Nor any drop to drink" is manifest each year in coastal disasters around the world, like Hurricane Katrina, the 2004 Indonesian tsunami and the 2010 Haiti earthquake, as people within sight of entire oceans are threatened with dehydration.
Between droughts, natural disasters and the large-scale redistribution of moisture threatened by climate change, the need for new sources of potable water grows with each passing day. Each year, the global population swells by another 85 million people, but worldwide demand for freshwater increases at twice the rate of population growth, doubling every 20 years or so. Throughout the world, our most vital resource is under stress from pollution, dam construction, wetland and riparian ecosystem destruction, and depletion of groundwater aquifers, with poor and marginalized populations getting the worst of it

SO WHY CAN'T WE CONVERT SEAWATER INTO DRINKING WATER? 
ANSWER :- 

WHY DOES PAPER BECOME TRANSPARENT WHEN SMEARED WITH OIL BUT NOT SO MUCH WITH WATER?

We always notice that when oil is smeared on the paper it become more transparent. But in case of water paper doesn't become that much transparent. So what is the science behind it. Why oil make paper transparent more than water. Even if both of them are fluid. So what make oil to do this effect.


ANSWER :- 

WHY DO WE YAWN ? WHAT IS THE REASON BEHIND IT ?

There are numerous theories on why we yawn and scientists have yet to come to any consensus. One of the first theories for yawning can be traced back to Hippocrates, the father of medicine, who hypothesized that yawning precedes a fever and is a way to remove bad air from the lungs. Based on modern evidence, however, it seems unlikely that yawning serves as a function of the respiratory system.
By the 17th and 18th centuries scientists were challenging the Hippocratic theories of yawning. These new theories focused on the circulatory system, suggesting that yawning causes an increase in blood pressure, heart rate and oxygen in the blood, which in turn improves motor function and alertness. This might explain why many athletes yawn before playing their respective sports. Yet, current tests have shown that the heart rate, sweating or brain’s electrical activity do not increase after yawning.


ANSWER :- 

WHAT HAPPEN TO A FULLY CHARGED BATTERY, WHEN IT CONTINUE TO CHARGE?

Many of the times we left our cell-phone on charging for the whole night, it will be fully charged after a while. What happens with the battery and the excess energy we add? After sometime we also notice some charger emitting a different pitched sound after it has fully charged the battery. Is this just a mechanism that kicks in to redirect excess energy? Where that extra energy go we add to our phone after it get full charged. How much it would be harmful to us?


ANSWER :- 

"KEEP AWAY FROM SUNLIGHT" WARNING , WHY IT IS WRITTEN ON THE PRODUCTS ?

Ever you think about it, keep away from sunlight / protect from light is written on product. Some food or medical items, like cosmetic items, many of our medicines and other product have a "protect from light" warning on the label. How can light influence products like milk and what does this warning mean in practice? Why they give this warning on the product. How the light can degrade the quality of product. We always learn that light is good for vegetable so how it can be bad. Did these light can make food poisonous?


ANSWER :- 

Friday, 8 November 2013

WHAT ACTUALLY CAUSES HANGOVERS? WHY ITS STILL FEEL CRUMMY NEXT DAY?

Everyday lot of people drink alcohol. Alcohol causes hangover, but do you know why alcohol causes hangover. What is the reason behind hangover. And next day you feel to problem and discomfort. If the data is any indication, at least 75 percent of you will recognize this feeling: a throbbing headache, exhaustion, queasiness and even muscle fatigue following a night of overindulging. But what is it about drinking alcohol that causes such discomfort?



ANSWER :- 

Thursday, 7 November 2013

WHERE DOES THE LIGHT GO WHEN WE TURN OFF THE LIGHT SWITCH?

Where the light go when we switch off the light, lot of children ask to there parents but they don't have any answer. But now there is a answer and an experiment by which all can know that where is the light gone. This concept also depends on the conservation of energy. Light never go anywhere is it just conserved.

ANSWER :-

CAN YOU POWER AN IPOD WITH AN ONION. IS IT REAL?

Imagine an Earth cast back into the darkness of prehistory. The world's power grids are cold, the roads still and lifeless with rusting traffic jams. Like the other few, scattered survivors, you scrape ­through the rubble for survival as best you can. One day you're listening to a great two-hour DJ mix when suddenly the battery of the iPod Classic you found begins to die. You panic.
After all, there's still 45 minutes remaining on that mix, and it was more than half-charged when you fished it out of some wreckage the day before! You empty your knapsack onto the ground and, fumbling through your possessions, discover there's still hope.
.
Wrapped in a napkin, you find the onion you were going to boil for supper. You pull out your last jug of Gatorade, along with the cooking pot and screwdriver you keep on your belt. You untie the iPod USB cord from your long, ragged hair and arrange the items in front of you. Finally, you pause the mix, place the iPod on the ground and run through the instructions in your head again -- instructions you watched, back before the chaos, on an old YouTube video.
It's a simple principle, as you remember it, working along the same lines as those batteries children would create with potatoes in science class. Gatorade and other sports drinks contain electrolytes, electrically charged mineral salts such as sodium, calcium and potassium. Normally, those electrolytes recharge our body, but they should recharge a battery just as easily, right?
First you'll have to poke two holes, one in each side of the onion, with your trusty screwdriver, then soak it for about half an hour in Gatorade. After you dry off the onion, you'll plug one end of the USB cord into the iPod and one into the vegetable.
You stare nervously at the flashing battery icon. WILL IT WORK?


ANSWER:-

HOW COMPACT FLUORESCENT BULBS (CFL'S) WORK AND SAVES ENERGY?

As we know that great scientist Thomas Alva Edison gives us the light in 1879. CFL is also is one of the invention for the light that will be green and consume less energy. The incandescent light bulbs consume lot of energy and use some it, because these bulbs generate lot of heat. Only 10 percent of energy is used and rest of it waste in heat.  so we came up with this green science

ANSWER :- 

HOW VIDEO GAMES ARE GOOD FOR VISION ? (ESPECIALLY FIRST PERSON SHOOOTING GAMES)

In every day life parents always scold or shout on their children for playing video games a lot. They always say that these video games may affect their eyes and their eyesight become weak, and parents also says that by eating carrot they can increase there focus and vision. But recent studies that playing video game  increases the vision of person. 
ANSWER :- 

Wednesday, 6 November 2013

CAN MARIJUANA ACTUALLY BE A MEDICINE ?

As we all know that marijuana is drug which are taken by people as intoxication. But drug specialist also working on it and saying that daily dose of marijuana will be good for health it make people more focus. It is right ? What they are saying. There are some contradictions and myth too.
But studies are saying some thing else


ANSWER :-

DID YOU KNOW WHY LIGHT MAKE THIS PATTERN BOTTOM OF THE POOL?

Most of the times we go to pools, ponds, lake and other water bodies we see this awesome pattern on the bottom of the water bodies. Did you ever think about it why it happen there. Why light is making this type of pattern

ANSWER :-