An Optical illusion is defined as an optical observable fact or phenomenon resulting in a deceptive visual feeling but in reality, the subject does not alter or change. An Optical illusion, also called visual illusion, in reality entails visual deception. Since, there is an array […]
Science
Who invented the Hubble Space Telescope?
The Hubble Space Telescope was developed by the United States Space Agency, NASA with valuable contributions from The European Space Agency. Though the funding was obtained in 1970, it was first launched only in 1990 because of the number of problems and delays that included […]
How to read body language?
Learning about the body language is a skill. If we can interpret the body language of others then we can better understand what he feels and thinks, whether his words are matching with his words or not. To interpret body language you have to observe […]
Why does water ripple?
When a stone is thrown in the water say pond, tank etc. you have noticed that many small waves of water are formed which moves away from the point where stone hits the water. These are known as ripples. Water in liquid state is not […]
How do batteries work?
Batteries are modified form of electrochemical cells, which are capable of generating electricity due to continuous chemical reactions within them. The working principle of batteries is related to chemistry. This is better explained in terms of “Redox” reactions. The “Redox” reactions are a combination of […]
Why does salt melt ice?
Water freezes and melts at zero degree. Unless the conditions are changed water does not freeze or melt, and a balance is maintained. Now if the temperature is lowered ice/water mixture will start forming ice and if temperature is increased ice/water mixture starts melting. If […]
How do fireworks work?
Around 12th century, fireworks were invented by China to scare away the evil spirit or devils. Firecrackers mostly have black powder or flash powder with many other metals, which were wrapped in a tight paper tube with a fuse to light the powder. The black […]
Why do we need protein?
Without protein our body cannot function properly. Our body nerves, tissues, bones all are made up of proteins. So proteins become very necessary for them to grow and repair. It also used to produce some hormones and enzymes in our body .proteins are made up […]
How to calculate your carbon footprint?
Every day while commuting, eating our food, manufacturing products or just spending time with our family, we are adding to the carbon emissions of the planet without even realizing it. Carbon is released as carbon dioxide and other toxic gases and chemicals, this increases the […]
How does ball point pen work?
If we compare ballpoint pen with fountain pen it is cheaper and less messy. As the name suggests we use ball in the ball point pen which is made up of steel, brass or tungsten carbide. The ball always remains rotating on the tip to […]