Atom q6 heart pusher skates10/7/2023 How many data bits can be contained on the disk? If a Blu-ray disk can hold 9,400,000 pages of text, how many data bits are needed for a typed page? (Hint: Determine the area of the disk that is available to hold data. Disks have an outside diameter of 120 mm and a hole of 15-mm diameter. The data density of a Blu-ray disk using a 405-nm laser is 1.5 × 10 7 bits mm −2.If the 405-nm laser is used in a Blu-ray player, what is the closest that information can be stored on a Blu-ray disk? Numerical aperture is a measure of the size of the spot of light on the disk the larger the NA, the smaller the spot. The ideal resolution of a player using a laser (such as a Blu-ray player), which determines how close together data can be stored on a compact disk, is determined using the following formula: Resolution = 0.60( λ/NA), where λ is the wavelength of the laser and NA is the numerical aperture.How many photons of light are produced by the laser in 1 hour? A Blu-ray laser has a power of 5 milliwatts (1 watt = 1 J s −1). In what region of the electromagnetic spectrum is this radiation? What is its frequency? The laser on a Blu-ray player has a wavelength of 405 nm. Photons\]Īnswer the following questions about a Blu-ray laser:
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