Whats the difference between LIGHT and HEAT?
They are nothing more than different names for transfer of seemingly different forms of energy. Light is a form of energy propagated by electromagnetic waves which is visible to our eyes. Light has several cousins (the same “stuff”, but fundamentally differing in frequency) which are not visible, and are classified by human experience and technology. One of light’s cousins is called infrared rays. These we experience as one of the three modes of heat transfer called radiation, because all bodies not hot enough to emit light will emit infrared instead. Heat is a dynamic energy, which is transfer of energy from a body hot in temperature to a body cold in temperature. Three modes of heat transfer exist: conduction, convection and radiation. Radiation is via electromagnetic waves, primarily infrared, but for hot enough bodies like the sun, stars, light bulbs, fires, coals, and stove coils, it can also be some visible light. Conduction is direct heat transfer through elastic collisions amon
