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Black holes are believed to emit something called Hawking radiation.
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∙ 8y ago
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What kind of radiation do photocopy machines emit and what is the exact wavelength of this radiation on average?
Other than visible light used to scan the original to be copied, some heat, and the kind of very low and extremely low frequency electromagnetic radiation emitted by all electrical devices, photocopiers do not emit radiation.
What kind of energy waves do black holes emit?
Black holes emit a great deal of x-ray energy.
How do black holes die?
Unfortunately black holes don't evaporate- they are a massive vacuum with a tremendous amount of gravitational force which can theoretically disassemble matter which then travels through the hole, and is reassembled (not necessarily in it's original form) at the other end of a black hole commonly called a white hole.
Does a flashlight have radiation?
Yes, although probably not the kind you're thinking about. Microwaves use electromagnetic radiation to heat food. If the microwave is properly constructed and not damaged, none of that radiation escapes.
Can black holes fit in a HR diagram?
One might quickly conclude that black holes don't belong on HR diagrams since the latter is designed for stars, and black holes generally aren't considered stars. Further, given that a spectral type would be necessary to plot any given entity on an HR diagram, a black hole would have to have such typification, which it does not have - given that, due to relativistic effects, it emits no significant light. If it were assigned a spectral type, it would still need to have an agreed-upon absolute magnitude, which some might argue was "infinite" for the same reason - reflecting the observer's inability to detect any (intrinsic) light. It is, however, generally accepted that black holes emit a kind of black-body radiation owing to quantum effects (Hawking radiation) for a temperature that may vary with its surface gravity. Even if a consensus could be built regarding its luminosity and its spectral type, its presence on an HR diagram may not be 'useful,' despite its significance in theories of stellar evolution to which the HR diagram so abundantly contributes.
What kind of electromagnetic radiation do all warm bodies emit?
Warm bodies emit infrared radiation.
What does a hot hydrogen gas emit?
Hot gases of any kind emit electromagnetic radiation.
What kind of radiation does Rn-222 emit?
Rn-222 emits alpha radiation.
What kind of radiation does sodium - 24 emit?
ultra volit
What kind of radiation does red laser pointers emit?
Red laser light.
What kind of telescopes are used to observe black holes?
You can't really "observe" a black hole. About the best you can do is look for their effects on their immediate environment, and one of the best tools for that is an X-ray telescope... matter falling into the black hole releases a lot of energy, and some of that comes out as X-rays.
What kind of radiation do photocopy machines emit and what is the exact wavelength of this radiation on average?
Other than visible light used to scan the original to be copied, some heat, and the kind of very low and extremely low frequency electromagnetic radiation emitted by all electrical devices, photocopiers do not emit radiation.
Do black holes have colour?
Since having color would imply reflection or radiation in the visible spectrum, and because a black hole's gravity is strong enough to prevent any light escaping, the best response would be, No; thus making the "black" component of their name particularly significant. Note that recent theories indicate that black holes can create a kind of radiation (Hawking radiation) associated with a thermodynamic interaction with the universe, but strictly speaking this occurs outside the black hole. They also have accretion disks which are highly energetic and will emit large amounts of radiation in the x-ray portion of the spectrum (the disks likely will also radiate some in the visible spectrum), and also evidence powerful relativistic polar jets which are highly luminous; but again these phenomena are outside the black hole.
Why can't we see black holes what would it look like?
We cannot see black holes because no light comes from them1. They are so gravitationally massive that even light cannot escape from a black hole, thus the name black hole.1 While there is an emission of matter and energy, called Hawking radiation, that theoretically radiates from the perimiter of a black hole, no energy of any kind (including Hawking radiation) escapes from inside the black hole.
What kind of electromagnetic radiation do pulsars emit?
All electromagnetic wave lengths (light)
What kind of energy waves do black holes emit?
Black holes emit a great deal of x-ray energy.
How does cell phones cause radiation?
Cell phones are small radios, that both transmit and receive. When they transmit they emit radio waves, which is a kind of radiation.
