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Digital Versatile Disc (DVD) uses 650nm wavelength laser diode light (part of the electromagnetic spectrum, in visable light section) which allows us to see it. CD uses 780nm wavelength, just outside of the electromagnetic spectrum, hence why we cannot 'see' it, only hear.
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoi think it is infrared waves
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Does CD have a magnet on it?
Most CD players use electromagnetic switches called relays. Have you ever turned on the power on your CD player or another appliance, and heard a click immediately before it went on? That's a relay doing its job. In a relay, a small current runs through a coil which is right next to a switch with a magnet in it. The coil pulls on the switch, closing it and turning on the device. Relays are useful because they use a small current to control a much larger one. As a result, they are often used in the power supplies of electronic devices such as CD Players
What kind of reaction is symbolized by AB plus CD?
This kind of chemical reaction is usually called "displacement" and sometimes "substitution".
What metric unit would you use to measure volume of a CD case?
It depends on what characteristic of the CD case is being measured: its mass, linear dimensions, volume, transparency to light (or other electromagnetic radiation), its brittleness, etc.
What kind of services and products do Cyclone Music provide?
Cyclone Music provides the following services: CD and DVD replication, CD and DVD duplication, CD mastering DVD Authoring, Vinyl pressing, packaging and print.
Can you safely use a universal AC adaptor set at 10V 300mA for a portable CD player that requires 4.5V 700mA?
Gary, If you do this you are going to toast your CD player. I suppose you are thinking because the VA that it will be ok. It won't. Your CD is not desinged to handle the higher voltage . This is really no different that taking a 120 volt microwave and trying to plug it into 240 volt source; and I know you wouldn't want to do that. The only difference here is amps for household stuff and milliamps for your electronics. Same result though; you get to go and get a new one. . Andy
What kind of noun is cd player?
cd player is a concrete noun.
What kind of CD player is best to use when walking?
cd walkman / portable cd player
Why does the 2001 Chevy Tracker CD player show error?
what kind of cd player is in a 2001 checy tracker
Can a CD player play CD-ROMs?
If it is a music CD then obviously, if it is any other kind then most likely not.
Is a DVD-ROM is an example of an optical disc?
Yes, all CD ROM , DVD Rom are optical disc since they use laser light or electromagnetic wave.
What brand of CD player is best?
There are many online shops that sell best cd player. Amazon.com is one of online shop that sells best cd player with any kind of reviews. You can visit www.amazon.com
What kind of protection does the Sony DNF340 Portable CD Player have against skipping?
The Sony DNF340 Portable CD Player has Skip-Free G Protection.
When a wave moves through an opening in a barrier its?
Bends and spreads out.When waves of any kind, sound, light electromagnetic radiation hit a gap in a barrier that is on the same scale as the wavelength then diffraction will occur. Diffraction is the bending of the wave and this appears as circular waves when we observe this effect with water.A common diffraction grating can be seen on a CD or DVD. The light spreads and we see this as different colours.
What kind of problems might occur if you tried to use an older CD-ROM drive or a CD player to play a CD-r or a CD-rw disk?
Motherboard will blow up
Why does a CD say no disc in the CD player after it was played on a computer?
Sometimes the encoding on a CD is in different formats. It is possible that if it is burned/made on a computer that it will have different encoding that the kind used in CD players.
What is wrong with a compact disc when you put a CD in and it will no read CD?
If the CD Player will not read the CD then either there is something wrong with the CD or the CD player or the CD or CD player needs to be cleaned.
When a DVD or CD plays the sound is scratchy but if it is copied to the computer the sound is perfect what is the problem?
Cheap, noisy, equipment, or some other device in the vicinity of the cd/dvd player that is injecting unwanted frequencies into the electronic circuits of the player. Sometimes, it can even be the amplified speakers on the computer itself causing the problem. Half wave rectification will induce all kind of interferences into the sound system.
