I don't know where to find the answer for this question and appreciate any help. If you know of any other resources that might help me understand why or how this works I would appreciate that as well.
Thanks :D.
2007-01-04 09:54:17 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Blue light has a shorter wavelength than yellow, so you can see smaller things with pure blue light than you can with yellow.
That is why PS3, with its blue laser, can store more information per square inch than the older CD ROM devices with their longer wavelength red lasers.
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A blue laser is a laser (pronounced LAY-zer) with a shorter wavelength than the red laser used in today's compact disc and laser printer technologies and the ability to store and read two to four times the amount of data. When available in the marketplace, personal computer users may be able to buy a laser printer with a resolution up to 2400 pixels or dots per inch at an affordable price. The same technology in CD and DVD players will provide a dramatic breakthrough in storage capability without an increase in device size....
...Red lasers used in today's technologies have wavelengths of over 630 nanometers (or 630 billionths of a meter). The blue laser has a wavelength of 505 nanometers....
2007-01-04 09:58:45 · answer #1 · answered by Randy G 7 · 2⤊ 0⤋
Blue light has a higher resolving power, because it has a smaller wavelength. That means that the "Airy disk" for any point source will be smaller, so the resolution will be higher.
2007-01-04 17:59:03 · answer #2 · answered by Keith P 7 · 2⤊ 0⤋