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Common sense. Is something is reflected, it cannot be absorbed, and vice versa. If something is a good absorber of heat, it tries to "hold onto" as much heat as possible; if something is a poor reflector of heat, it is bad at minimizing heat absorption.
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In general good absorbers of electromagnetic radiation are also good?
Yes, Good absorber of heat are good emitters of heat. And in both the way rate is same. This is Kirchoff's Law.
Why do you blacken the outer surface of a solar cooker?
It is because black colour is a good absorber of heat
Is dull surface a good radiator of heat?
It is in fact the best radiator. Dull black is the best absorber and emitter. Then shiny black, followed by white, then silver. While the best reflector goes the other way around (silver's the best, then white, followed by shiny black, then dull black)
What traps heat in the solar cooker?
Usually mirrors or a large reflector traps the sun's heat and focuses it on the food.
Experiment to show that a dark surface is a ggod absorber of radiation while a white surface is a bad absorber of radiation?
Paint two otherwise identical objects, one with white paint, the other with black paint. Put both of them in the sunshine. The black object should get hot faster than the white one, because the absorbed heat energy gets converted to heat.
Is a good emitter of heat also a good reflector of heat?
Yes..
What does a good absorber do?
it absorbs moisture which may be caused by heat it may also be a good absorber for dirt and dust
Is a good reflector of radiation a good emitter of radiation?
A good absorber of radiation is a good emitter. Radiation is the energy that that comes from a source and travels through space or through something. Some examples of radiation include light, heat and sound.
What is good reflector of heat and light?
A mirror.
Why are oil tankers painted silver?
good reflector of heat
Why black objects heat up more in sunshine?
because black is good absorber of heat
What color get the hottest from absorbing heat?
black as it is an excellent absorber of heat. that's why you feel very hot when you wear black coloured clothes. so many times we prefer to wear white clothes as white is an excellent reflector.
Is red a good absorber of heat?
Yes it is, however black is even better.
What type of radiator of energy is an object that is a good absorber of radiation?
An object that absorbs heat well will also emit heat well. The object will emit heat until equilibrium is reached with its surroundings.
Why does a black colour absorb more heat?
because its a good emitter/absorber of radiation
Is lead an excellent reflector of heat?
yes lead (Pb) is an excellent reflector of heat and is used widely
Does paper used to substitute wood as heat absorber?
yes paper must be substitude wood as heat absorber
