We all know that when sunrays reach to earth they heat the surface of rivers, lakes, ocean and other water bodies leaded into process called evaporation. These vapors start rising and it is the tendency of warm air to hold more water vapors. So when […]
Science
Who invented daylight savings time?
Daylight savings time, also known as DST is a practice that allows advancing clocks on a temporary basis during summer in order to provide more daylight during the afternoons and reduce the daylight in the morning. The modern DST system was first suggested by George […]
Why does soda fizz?
When we open the bottle of soda we always notice the fizz. This is because during the soda manufacturing large number of molecules of carbon dioxide gas are forced into the bottle and are dissolved at a pressure up to 1200 pounds per square inch […]
Is there any material which does not burn in fire?
Fire can be a good servant but a bad master and therefore, we should always be careful while handing fire because it can create a lot of damage if we take it very lightly. Over many years, fire has caused a great deal of damage […]
How do airplanes fly?
Aeroplanes fly and reach to a height by using two things. One is the Bernoulli’s effect and other is the simple momentum transfer in the flow of air for the lift. Daniel Bernoulli stated a principle which says that with the increase of speed of […]
Who invented dynamite?
Dynamite was invented by Alfred Bernhard Nobel a Swedish chemist in 1867 and it went on to become one of the most important inventions in the history of mankind. Nobel was granted 355 different patents for his different inventions of which dynamite was the most […]
How can you make Dry Ice?
Dry ice is the pure and solid form of Carbon dioxide or CO2. When Carbon dioxide is pressurized and refrigerated, the liquid carbon dioxide forms. While this liquidation is happening the inner temperature of the carbon dioxide drops, this helps part of the gas to […]
Why is snow white?
We all know that snow is a frozen ice crystals. Then why snow is white? As the frozen water is clear and transparent. A collection of number of ice crystals are known as snow. When light falls on the layer of snow it passes from […]
What causes forest fires?
Fire in the forest is a destructive process. It can occur in both temperate and tropical forests. Fire can be due to the lightening or the carelessness of human beings. Nearly 90 percent of the forest fires are caused because of human beings. Also some […]
How sunglasses work?
While buying sunglasses all of us think that it protects our eyes from high intensity light. So how they work in the protection of our eyes? Tinting of glasses determines the amount of light we are exposed to. The black and grey tinted lenses provide […]