CD, DVD and Blu-Ray drives are optical storage devices. Binary data is stored as changes to the texture of the disc's surface, sometimes thought of as microscopic pits and bumps. These 'bumps' are located on a continuous spiral track, starting at the centre of the disc.
On an optical disc, data is stored by changing _ bumps_ of the disc surface.
On an optical disc, data is stored by changing ______ of the disc surface.
8. Elaine is building a home theater system consisting of a tuner, an optical disc player, speakers, and a high-definition TV. If she can select from four tuners, eight speakers, three optical disc players, and five TV's, in how many ways can she configure her system?
The outside diameter of the playing area of an optical Blu-ray disc is 11.75 cm, and the inside diameter is 4.50 cm. When viewing movies, the disc rotates so that a laser maintains a constant linear speed relative to the disc of 7.30 m/s as it tracks over the playing area. 1) What is the average angular acceleration of a Blu-ray disc as it plays an 6.0-h set of movies? (Assume the disk is scanned starting at its inner radius...
A disc of mass m slides with negligible friction along a flat surface with a velocity v. The disc strikes a wall heas-on and bounces back in the opposite direction with a kinetic energy one-fourth of its initial kinetic energy. What is the final velocity of the disc?
P10.7 A solid disc flywheel has a maximum variation in stored kinetic energy amounting to 1,000 J. Given that its diameter is 0.9 m and the velocity of the edge varies between 8 and 9 m/sec, determine its mass.
(20 points) A probe sent to the surface of Mars uncovers a pure platinum disc inscribed with the message, We'll be right back" (in Martian, of coursel). The disc is 4 inches thick and 0.8 meters in diameter. The density of platinum is 21,450 kg/m3. What is the mass of the platinum disc in pounds (Ibm)? 2409.98 lbTn The Martian acceleration due to gravity is 3.61 m/s2 while Earth's gravitational constant is 32.2 ft/s Whili is the Earth wei(Jlii ої...
Two alternatives to incorporate improved techniques to manufacture computer drivers to play HD DVD optical disc formats have been developed and costed. Compare the alternatives below using capitalized cost and interest rate of 8% per year compounded quarterly. Select the CC of best alternative Alternative x Alternative Y First Cost, $ -240000 -168000 Net income, Sper 5000 9000 quarter Upgrade cost, every 10 - 13000 years Salvage value, $ 30000 5 Life, years 00
Why does the Sun appear to have a visible surface at optical wavelengths?
Law of gauss 1.Consider a disc of radius R with surface charge density σ(r, θ) =[ 2cos(θ)/r^ 2]+ [1C/πR^2].a) What is the electric field flow through a closed surface S that completely encloses the disc? b) Now a point load of -1C is placed near the surface S, but outside it. What will be the total electric field flow through S in that situation? (S still contains the charged disk) (c) If the point charge is now introduced into the...
BASED ON REAL DATA TAKEN BY AN OPTICAL 3D SURFACE PROFILOMETER The surface of a part has a profile given by the y-values (distance to the surface from a reference centerline) vs. x-values (distance along the surface from a reference starting location) shown in the enclosed "txf file. Before fikering to remove the surface waviness, the yvalues are as shown under the column labeled "nfilered yvalues". After propar filtering to remove the surface waviness, the yalues are re-caleulasted, and shown...
3.) An optical fiber is covered by a layer of glass, to protect its surface. The index of refraction of the core is n1 = 1.8, and that of the protective layer is n2 = 1.5. The diameter of the core is d= 0.2mm. a. Calculate the critical incident angle at the interface between the core and the protective layer, at which total reflection occurs! (Give your result in degrees!) b. What is the minimal radius to which the fiber...