What happens when out go out on a bright sunny day? You feel the heat of the sun as soon as you step out. Every solid object we touch is warm due to the sun’s radiations though the surrounding air may be cold. This is because the sun generates infrared heat through combustion of gasses. It does not heat up the air and only warms up the solid objects. This is the concept used to built Infrared Heaters. Today, they have become a legacy of many families...
