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What else can I help you with?
How does the DVD player have electromagnetic wave?
A DVD player uses a laser beam to read data encoded on the disc. This laser produces electromagnetic waves in the form of light to detect and interpret the data stored on the DVD.
What color laser beam does a DVD drive use?
a red laser like a CD
What is a movie DVD?
Digital Video Disc A disc read by a laser beam containing video programming.
Two characteristics give a DVD more storage than a CD?
The DVD uses a different laser with a smaller wavelength, not the long wavelength red laser that is used for CD's. I believe the DVD laser is in the ultraviolet spectrum. Anywho, the smaller laser allows the DVD to have smaller "bumps" (which is what the laser reads). Since they are smaller, more can fit onto a disk. Also, DVD's can be 2-layer. Twice the data.
Why wont my dvd play after ive cleaned it?
The DVD laser may be messed up in the player. You may need to replace the DVD player.
What waves are used in DVD players?
Light waves.A DVD player uses a red (long wave) laser, and a blu-ray player uses a blue (short wave) laser.
What is laser used in CD and DVD?
Laser light is used in CDs and DVDs to read and write data. A laser beam is used to either create pits on a disc's surface (writing data) or to detect the patterns of pits (reading data) as the disc spins. The laser's focused beam allows for precise and fast data access on optical media.
What energy transformation takes place using a DVD player?
Electrical energy changes to light and sound energy.
What is the purpose of the ruby laser used in technology?
The red ruby laser is used in standard DVD players to read standard DVD discs. They are now being superseded by the blue laser DVD player, otherwise known as Blue-Ray players and discs.
Is laser beam used in RAM CHIP to store data?
No, RAM is a form of computer memory that is an integrated circuit, which uses electricity to read and write data. A laser beam IS used in CD/DVD drives though, where the laser detects differences in distance from tiny pits on the surface of the disc representing data.
Is Blu-ray Disk is optical disk?
Yes, a Blu-Ray device is an optical reader. CD's, DVD's, and Blu-Rays are called Optical Devices because the reader looks at the disks using light. The light is a laser. Just like a DVD, a Blu-Ray uses a laser beam to light up and read the information on the disk. This is like an old record needle running along a record groove and reading the information. However, the laser used by CD's, DVD's and Blu-Rays does not touch the disk. It just lights it up. The difference between DVD's and Blu-Rays is the colour of laser. DVD's use a red laser light, Blu-Rays use one that is blue. Different coloured laser beams read different sizes. Writing and reading on a DVD with a red laser beam is like using a crayon, a blue beam is like a sharp pencil. The Blu-Ray is an optical device, just like a DVD, but because it uses a "finer pencil" it can put more information onto the disk.
What color is the laser beam in a DVD drive?
Red - its 650 nanometer wavelength puts it squarely in the middle of the visible light's red spectrum.
