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If the satellite is to have ANY communications, usually with Earth, it must use radio waves, or some other radiation, so yes.
The Earth does not emit light, it like the moon reflects light
they are longer than those emitted by the sun.
All forms of electro-magnetic ... the full spectrum from UV to visible light to infrared. Pulsars emit x-rays
The Sun and red giants
There is no such (single) frequency. The Earth is not a resonator, but it does vibrate mechanically (seismic and tidal) and emit electromagnetic radiation at many different frequencies.
Anything that has a temperature emits IR radiation. Hotter things emit more at a higher frequency. Then they become Red.
No. No natural object emits all its radiation at just one frequency.
Only the sun emits radiation in the wavelengths of visible light, which is considerably higher energy than infrared emitted by Earth.
If a neutron star's rotational period is fast enough to produce jets (A pulsar), said jets will emit radio waves, with faster periods emitting higher frequency radiation as well as the jets themselves emitting synchrotron radiation. Also, unless the neutron star were 0K, it will emit thermal radiation However, as far as a neutron star that isn't a pulsar, nobody knows if they emit anything but thermal radiation.
Molecules emit electromagnetic radiation in NMR spectroscopy.
true
Yes - many things emit infrared radiation (IR), including toasters.
Terrestrial radiation refers to heat emitted from the earth's atmosphere and surface.
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.
Copiers emit light as they illuminate the original of the item to be copied. All electronic devices, including machines made by Xerox Corporation, emit low frequency electromagnetic fields. There are not hazardous to the operator, although they are radiation. Other types of radiation are not emitted.
The black body equation describes this in detail, it is called Plank's law. All bodies emit electromagnetic radiation. The hotter the body the higher the average frequency. Refer to the links in the Related links for lots of detail.