0
Is a good absorber of radiation a good emitter or a poor emitter?
Wiki User
∙ 12y ago
It is a good emitter, as you can not have a good absorber, which isn't a good emitter. Dark, Matt surfaces are good emitters and absorbers e.g. a saucepan.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
If a poor absorber of radiation were a good emitter its temperature could remain?
less than its surroundings
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.
Are silvered surfaces good or poor absorbers of infrared radiation?
Very very poor, they have a tendency of blowing you IP.
Is water a good or poor reflector of light?
good
All objects emit and absorb radiant energy?
Theoretically false. An object at the temp of absolute zero would emit no energy or radiation. However, absolute zero does not exist in nature (as far as we know), therefor, in a practical sense the statement is true.
If a poor absorber of radiation were a good emitter its temperature could remain?
less than its surroundings
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.
Why are carbon dioxide and water vapor called selective absorbers?
Any object that can specifically absorb and emit radiation (in the form of, say, infrared radiation), is called a selective absorbers. An example is: Snow. It is a good absorber of infrared radiation but poor absorber of sunligh. Object that selectively absorb radiation at some wavelength tend to radiate radiation at that same wavelength. CO2 and water vapors are both very good absorber of infrared radiation but at the same time poor absorber of different forms of solar radiation that are visible to us.
What kind of surface should an object have to be a poor absorber of radiation?
A reflective one
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 is a poor reflector of heat also a good absorber?
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.
between white and silver surfaces, which one is the best emitter of radiation?
The best emitter of radiation depends on the type of radiation you are referring to. Generally, when discussing thermal radiation, a "blackbody" is considered the best emitter. A blackbody is an idealized object that absorbs all incident radiation and emits radiation perfectly according to its temperature. In real-world scenarios, there is a concept called "emissivity," which quantifies how effectively an object emits thermal radiation compared to a blackbody at the same temperature. The emissivity of an object ranges between 0 and 1, with 1 being a perfect blackbody. Regarding white and silver surfaces: White surfaces: White surfaces tend to have high reflectivity and low emissivity. This means they are good at reflecting incoming radiation and do not emit thermal radiation as effectively. In terms of thermal radiation emission, they are not the best emitters. Silver surfaces: Silver surfaces also have high reflectivity but generally have higher emissivity compared to white surfaces. They emit more thermal radiation than white surfaces, but they are still not as effective emitters as a perfect blackbody. In conclusion, between white and silver surfaces, silver surfaces would be the better emitter of thermal radiation due to their higher emissivity. However, neither of them is as efficient as a blackbody emitter. Keep in mind that the exact emissivity values can vary based on the specific properties and conditions of the materials used.
Are silvered surfaces good or poor absorbers of infrared radiation?
Very very poor, they have a tendency of blowing you IP.
Why do you prefer to wear clothes in summer and black in winter?
We are prefered to wear white clothes in summer because white colour is a poor absorber of heat and wear black clothes in summer because black colour is a good absorber of heat
What might be the effect of sprinkling black soot over the ice in the Arctic or the Antarctic?
The ice under will melt because black is a good absorber and a poor radiator.
What is something that has low albedo?
An object that has a high albedo is one that is highly reflective, but a poor absorber. An object that has a low albedo is one that does not reflect well, therefore, is a good absorber. This means that a black object has low albedo.
Is water a good or poor reflector of light?
good
