Final answer:
A Blu-Ray player can read more information than a CD player largely due to the use of a blue laser with a shorter wavelength, allowing for smaller pits and higher data density. The highest capacity quad-layer Blu-Ray disk can store up to 128GB of data.
Step-by-step explanation:
Capacity of Highest Capacity Blu-Ray Disk
The highest capacity Blu-Ray disk can store a substantial amount of data. To understand this, let's look at the resolution of a Blu-Ray system first. Given that numerical aperture (NA) = 0.95 and using a 405-nm laser, the resolution can be calculated using the formula Resolution = 0.60(λ/NA), resulting in a high-density storage capability. With this resolution, Blu-Ray disks achieve much higher data densities compared to other optical media like CDs and DVDs.
The data density of a Blu-Ray disk reached is 1.5 × 107 bits mm-2. Considering a disk's diameter of 120 mm and a hole diameter of 15 mm, the area available for data is the area of a 120 mm diameter circle minus the area of a 15 mm diameter circle. With these measurements, we can calculate the number of bits contained on the disk, taking into account the given density. As Blu-Ray technology has advanced, a single-layer Blu-Ray disk can hold up to 25GB of data, and a dual-layer disk can hold up to 50GB. There are also triple-layer discs that can hold up to 100GB of data, and the largest capacity of a quad-layer Blu-Ray disk can store up to 128GB of data.
For the question related to typed pages, if we assume a Blu-Ray disk can hold 9,400,000 pages of text, we would divide the total capacity by the number of pages to find the number of data bits required for a single typed page.