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the absorptive power of a perfect black body is 1

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Definition of emissive power and absorptive power of a black body?

Emissive power is defined as the energy radiated from a body per unit area per unit time at any given temperature.


What substance is most absorptive to visible light?

This ideal material is called "black body".


Is there any perfect black body in the universe?

No. The black body is an "ideal thing" or a construct, and there isn't anything that "perfect" in nature.


Is there exists any perfect black bodies in the universe?

There are no perfect black bodies on the universe. But there are a lot of them which can be approximated (with good precision) by the black body description.


What is a perfect black body and how does it relate to the concept of thermal radiation?

A perfect black body is an object that absorbs all incoming radiation and emits the maximum amount of thermal radiation for its temperature. It serves as a theoretical standard for understanding thermal radiation. The concept of a perfect black body helps scientists study and compare the thermal radiation emitted by real objects.


What is a perfect black body?

A perfect blackbody absorbs all radiation incident on it and It emits electromagnetic radiation in the form of thermal radiation from its surface. OR A perfect blackbody is a perfect emitter and perfect absorber.


What is a perfect black body example and how does it relate to the concept of thermal radiation?

A perfect black body is an object that absorbs all incoming radiation and emits the maximum amount of thermal radiation for its temperature. It serves as an idealized reference point for understanding thermal radiation. The concept of a perfect black body helps scientists study and compare the thermal radiation properties of different materials and objects.


What is a perfectblack body?

If it is capable of emitting and absorbing radiations having wavelength right from 0 to infinite, then it is declared as perfect black body. Sun is a black body. Now it is in the emitting phase.


Why does some object appear black?

It's one of the colour. Black colour absorb all colour. A perfect black body radiates heat.


How does an absorptive heterotroph feed?

An absorptive heterotroph feeds by secreting enzymes to break down organic matter outside of its body, then absorbing the resulting nutrients through its cell membrane. This process allows them to obtain energy and nutrients from a wide range of organic materials.


When blood levels of glucose amino acids and insulin are high and glycogenesis is occurring in the liver the body is in the?

absorptive state. (absorbed, used and stored)


Why a hole in the wall of cavity radiator is called a black body?

Black is the color which absorbs or radiates all frequencies equally. The perfect black body is only a theoretical object; in the real world there is always some limit to the frequency range. However, a hole in a cavity radiator comes close to being a black body.