For relief from the heat, people use AC ie Air Conditioner. Their use is heavy on the pocket in two ways.

One is their cost and the other is the cost of using them. IIT Guwahati has found low cost ac.

Researchers have found an affordable option.

Research at IIT Guwahati has discovered Radiative Cooler Coating Material, which does not cost electricity to use.

According to the officials, this material is an electricity free cooling system.

They can be applied on the roof. It will work both day and night, which can become a cheap alternative to air conditioners.

According to the officials, this material is an electricity free cooling system.

Ashish Kumar Choudhary, Research Scholar at IIT Guwahati, said, 'Passive radiative cooling system works by absorbing the surrounding heat in the form of infrared radiation.

Most of the passive radiative coolers work only at night. They also have to reflect solar radiation to work during the day.

According to Chaudhary, till now such cooling systems were not working properly during the day. But 'we have solved this problem.

And have brought an affordable and better radiative cooling system. This system can work for the whole day.