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What is the difference between black hole and black body?
A black hole is known to absorb all sorts of every light, radiation..etc. If it absorbs -all- energy around it, it should in addition emit all energy it has absorbed. But due to its vast gravity noting can “escape”, and therefore nothing is actually emitted. A black body absorbs all light/radiation in its reach.
What body is considered a black body?
In physics, a black body (in an ideal sense) is an object that absorbs all electromagnetic radiation that falls on it, without any of the radiation passing through it or being reflected by it. Because it does not reflect or transmit visible light, the object appears black when it is cold.
Which is not a translucent body?
Answer: Opaque bodies are those bodies that do not allow light to pass through them at all. Examples: Wood, chair, metals, etc.
Which is the luminous body?
Hint:The luminous body is the body that produces the light on their own. The sun is the natural luminous body and it is the chief source of the light. The light is visible to the human eye by the process of reflection by the objects in the environment.
Why is the black body called a black body?
The name “black body” is given because it absorbs radiation in all frequencies, not because it only absorbs: a black body can emit black-body radiation. On the contrary, a white body is one with a “rough surface that reflects all incident rays completely and uniformly in all directions.”
What’s the difference between a black and a white body?
A black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence. A white body is one with a “rough surface [that] reflects all incident rays completely and uniformly in all directions.”
Is the black body an idealized physical body?
A black body or blackbody is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence.
Can a black body appear black at room temperature?
A ideal black-body at “room temperature” would indeed appear black, but if heated enough it would start to emit light. This is shown in graphs of “black-body radiation”. The point is that if a black-body is a perfect absorber of light, it’s also a perfect emitter of light, when hot enough.