Planetary Science
Neutron Stars

What do you call a neutron star that emits radio waves?


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2015-05-05 18:38:12
2015-05-05 18:38:12

A pulsar is a spinning neutron star that appears to give off radio waves


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Those are the ones we call "radio" waves . . . anything witha wavelength greater than roughly 1 millimeter.

The neutron is called the neutron because it it electrically neutral, hence the neu- prefix

The ionosphere bends radio waves . . . most go out into space, but a fair number hit the earth far away, and are reflected back up to the ionosphere. Radio operators call this phenomenon, "The skip".

At some time or another, there's probably been an occasion when you listened to your AM radio or made a cellphone call from inside your house, or from your office, or from inside a parking garage. Those would be impossible if the radio waves couldn't get in there.

The part that we call "Extremely Low Frequency Radio Waves".

Compared to what ? What do you call "high" .Most radio waves have higher frequencies than most sound waves,and they all have lower frequencies than light waves.We generate and detect radio waves for purposes of communication, cooking, andscientific investigation, in the frequency range of roughly 30 KHz to 300 GHz,corresponding to wavelengths between 10,000 meters and 1 millimeter.

One can say that radio waves are a million times bigger than light, but one needs to be a little more specific about what you mean when you say it. When we speak of the size of a wave, we usually refer to its amplitude or wavelength and in this case, wavelength seems to be relevant to the question. Radio waves and light are both electromagnetic waves and the two terms refer to different parts of the electromagnetic spectrum. Visible light has wavelengths of a few hundred nanometers, although one can expand that region somewhat beyond the visible and still find that the term "light" is used. Radio waves are much longer and generally the spectral region which we call radio is in the ball park of a meter. (It is not uncommon to apply the term radio waves to much longer wavelengths however.) Though there is not one specific measure of "size," radio waves generally have a wavelength of a million times greater that light waves.

The ones we call "radio waves". That's the electromagnetic spectrum between maybe roughly speaking 10 KHz to 300 GHz., or wavelengths between 1 mm to 30 km.

A radio transmitter is used to transmit radio waves. A radio receiver is used to receive radio waves. You probably have many radio receivers around you. Your car has a receiver and you probably have at least one receiver in your home. If you have a wireless or cordless phone, you have both a receiver and a transmitter built into the same device. The transmitter is so your voice can be transmitted to the cellular network and ultimately to the person you are talking to. The receiver in your wireless or cordless phone allows you to hear the person on the other end of the call.

The longest ones that we have a name for are the ones we call "radio waves". There are a lot of electromagnetic waves longer than that, which we don't even have a name for ... probably because we don't use them for anything much.

some atoms have a center that isn't stable. This center sometime looses parts, like a proton or a neutron. That part is released with an enormous amount of power. We call that a radio active rays. A not stable atom is a radio active element. That together is radio activity.

We use electromagnetic rays in radio transmission, but we usually call them waves or radiation rather than rays. There are electromagnetic transmissions for all forms of radio communication. The different "kinds" of radio transmissions are properly referred to as modes, such as AM, FM, SSB, CW, etc. All modes use electromagnetic "rays" or "waves," which are the very definition of radio communications.

We would call any wave longer than 1 millimeter a "radio wave".

Compared to what ? What do "low" and "short" mean to you ?The product of (frequency) x (wavelength) is always the same number ... thespeed of the wave. So the lower frequencies must have longer wavelengths.The lowest frequency / longest electromagnetic waves are the ones we call 'radio'.

Reduce speed and head into the waves at a 45-degree angle.Panic and call for help. If you have a radio, it's even better.

Because they produce radiation, although being next to them for a whole year is probably equivelent to a 20 min mobile phone call.

A cell phone is a device that can let you call people or text through radio waves. And most now have apps, games, etc.

You'd call him Jimmy. His name would be Jimmy Neutron if he's in the jungle, the desert, the city or anywhere else he'd be.

by a tool scientists like to call unknown.

No. All forms of electromagnetic radiation travel at the same speed. We usually call that speed "the speed of light".

That depends on what you call "small". -- Gamma rays are smaller than x-rays, but -- x-rays are smaller than ultraviolet rays, but -- ultraviolet rays are smaller than blue light waves, but -- blue light waves are smaller than green, yellow, and orange light waves, but -- any of those are smaller than red light waves, but -- red light waves are smaller than heat waves, but -- heat waves are smaller than radio waves.

One such definition would be a star

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