Blu-ray (not Blue-ray) also known as Blu-ray Disc (BD), is the name of a new optical disc format jointly developed by the Blu-ray Disc Association (BDA), a group of the world's leading consumer electronics, personal computer and media manufacturers (including Apple, Dell, Hitachi, HP, JVC, LG, Mitsubishi, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony, TDK and Thomson). The format was developed to enable recording, rewriting and playback of high-definition video (HD), as well as storing large amounts of data. The format offers more than five times the storage capacity of traditional DVDs and can hold up to 25GB on a single-layer disc and 50GB on a dual-layer disc. This extra capacity combined with the use of advanced video and audio codecs will offer consumers an unprecedented HD experience
1st Generation ... The first blue laser diode was developed in 1996 by Shuji Nakamura, ... Of course you can put this on a single DVD, but if this trend follows over the years ... It could be pretty cool that you could run your website by using a pc.
The true advantage of using blue light over red light is that well-aligned CD and DVD players actually focus the laser beam such that only one pit is illuminated (eliminating any chance of optical reading errors, because as we've seen, illumination of more than one region more easily leads to errors). Unfortunately, the size of the focus is itself diffraction-limited, which means that the wavelength of light determines the size of the focal spot. Blue light, which diffracts less, makes a smaller focal spot than red light, so it more easily will illuminate just one region when the region of data encryption is smaller. With smaller data regions per bit of information, more data can put encrypted on a given disc size.
As you'll see, changing the pit size also changes signal clarity.
Change the slit size to 790, but leave the other variables (slit position and slit separation) the same. Draw your screen results for both red and blue light. Then change your slit width to 260, and do the same. Screen charts are provided for this below.
Blue light signal: Red light signal: Blue light signal: Red light
blue color of light is less likely to have data errors with small data encryption regions.