Why do factories have tall chimneys?

Why do factories have tall chimneys

In factories of any kind, the purpose of chimneys is to carry their smoke from the furnaces to the air. Some may wonder why these particular chimneys are so tall. Tall chimneys indeed make for a better draught for the furnaces, but that is not the important thing here. The point is … Read more

Why do dark objects look smaller than bright objects?

The Answer: The simple answer: the brain is tricked into thinking the dark object is smaller because of how the brain perceives color. The human mind is a complex array of nerve bundles sending electrical signals from the brain to the body. The brain stores memories, controls our breathing and heartbeat, and … Read more

Why does blotting paper absorb ink?

If you have used a dip pen or a fountain pen, blotting papers are undoubtedly handy. It is an extremely absorbent paper used to suck up excess liquid material, such as oil or ink, from an object’s or writing surface. Through that, you will no longer have to wait until the ink … Read more

Why does hot water freeze faster than cold water?

The above question may be absurd as it is somehow pretty apparent that the answer should be a straight no. We know that ice is cold, and hot water will take a longer period to cool down, so why would it freeze faster than cold water? However, through thorough observations across many … Read more

Which liquid substance boils when it is cold?

Boiling is the changing of a liquid into vapor or gas. And the temperature at which this happens is called the boiling point of the substance. The boiling point of water is generally given as 100° centigrade, but the boiling point varies according to the pressure of the atmosphere. Water will boil … Read more

How fast does a free falling object fall?

Objects move because a force is acting on them, either pushing or pulling. They fall because the force of gravity pulls them towards the Earth. Forces tend to make objects accelerate, and gravity is no exception. The speed of a free-falling object, however, will depend on several factors.  A tennis-ball dropped over … Read more

What is chloroform? Why does it send a person to sleep?

You might have commonly heard the word “chloroform” associated with people fainting or police investigations. In cinemas, we sometimes see an unfortunate victim forced to smell a cloth moistened by chloroform, leading the victim to fall unconscious suddenly. So, is it advisable to avoid smelling or touching chloroform? Is there any truth … Read more