Science

Why does it rain?

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 […]

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 […]

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 […]

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 […]