Compare the spacing between cd and dvd tracks

Assignment Help Physics
Reference no: EM132190727

Question: Abstract: In this lab we calculated the track spacing on DVD's and CD's using a helium neon laser. For the DVD the calculated track spacing was 8.16E-7 m. For the CD the calculated track spacing was 8.30E-7 m.

I. Introduction

The purpose of this experiment was to calculate and compare the spacing between CD and DVD tracks by using media as diffraction gratings. Diffraction refers to various phenomena associated with wave propagation, such as the bending, scattering and interference of waves passing by an object or aperture that disrupts the wave. It occurs with any type of wave, including sound waves, water waves, electromagnetic waves such as visible light and radio waves. According to the principles of quantum mechanics, any physical object has wave properties. While diffraction always occurs, its effects are generally most noticeable for waves where the wavelength is on the order of the feature size of the diffracting objects or apertures. In our experiment we attempted to measure the distance between the tracks using media as a diffraction grating, a reflecting element whose optical properties are periodically modulated. Most commonly the diffraction gratings are realized as fine parallel and equally spaced grooves or rulings on material surface. When light is incident on a diffraction grating, diffractive and mutual interference effects occur, and light is reflected or transmitted in discrete directions, called diffraction orders.

II. Conclusion

The purpose of the particular lab is to calculate and compare spacing between the tracks on a CD and DVD by using the media as diffraction gratings. When laser light is shined onto a CD tiny grooves in the surface of the CD scatter the light in all directions. Some light waves create bright light while other waves eliminate each other to be clear. Specific names are associated with parts of pattern of light. The brightest spot of light is called Zero Order Maximum, the next part of bright spots is First Order Maximum, the next are second order maximum and so forth. After procedure is executed and all data is recorded, graphs and calculations are made.

Reference no: EM132190727

Questions Cloud

What aspects of the economy and society are significant : What aspects of the economy and society are significant influences on the politics of the state? What does the future look like for Iran.
Organization when implementing business ethics program : What are three benefits to an organization when implementing a business ethics program? What are the four benefits to a corporation of a business ethics program
Could republicans have limited their losses and how : What factors could account for the overwhelming Democrat victories in this year's midterm House of Representatives elections?
Evaluate edward behavior as manager : Evaluate Edward's behavior as a manager and identify effective and ineffective actions?
Compare the spacing between cd and dvd tracks : The purpose of this experiment was to calculate and compare the spacing between CD and DVD tracks by using media as diffraction gratings.
Develop a tailored project plan : PPMP20008 - Develop a tailored project plan that reflects the project described in this document and aligns to PMBoK and Prince2 requirements
Discuss the role of the media and other important factors : How you will get your sample, discuss validity and reliability, role of the media and other important factors covered in the course literature.
Establishing contact with desired employer or workplace : Directions A vital step to securing a job interview centers on first establishing contact with a desired employer or workplace.
How many house representatives does california have : How many House representatives does California have? What political party/parties are a majority in California politics at the state level?

Reviews

Write a Review

 

Physics Questions & Answers

  Kinetic energy of the heavier block after the push

Two blocks of ice, one four times as heavy as the other, are at rest on a frozen lake. A person pushes each block the same distance . Ignore friction and assume that an equal force is exerted on each block.Which of the following statements is true ab..

  Find how large does the current does it carry

A solenoid is 2.0 m long and with an inner radius of 30 cm and 1000 turns of wire. How large does the current does it carry

  The bureau of land management wants you to present a plan

the bureau of land management wants you to present a plan for a self-contained city. the population is 1000. your job

  A 247 kg log is pulled up a ramp by means of a rope that is

a 247 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. the ramp is inclined

  Two points on a string are observed as a traveling wave

two points on a string are observed as a traveling wave passes them. the points are at x1 0 and x2 1 m. the

  Q1 in a crash test a 1300 kg car slams into a concrete wall

q1. in a crash test a 1300 kg car slams into a concrete wall at 18.8 ms and comes to rest in 0.275 s. a find the

  Find out the acceleration of the sled and child

the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57. Find out the acceleration of the sled and child.

  At what rate must the gases be ejected

A rocket traveling 1850 m/s away from the Earth at an altitude of 6800 km fires its rockets, at what rate must the gases be ejected

  Calculate the most torque you can exert on the knob

A combination lock has a 1.5 -diameter knob that is part of the dial you turn to unlock the lock. What is the most torque you can exert on the knob

  Calculate the angular momentum of the system when the stick

a particle of mass 0.350 kg is attached to the 100 cm mark of a meter stick of mass 0.150 kg. the meter stick rotates

  How much is the mechanical energy of the skier-earth system

Two stationary positive point charges, charge 1 of magnitude 3.10 nC and charge 2 of magnitude 1.74 nC, are separated by a distance of 36 cm. An electron is free from rest at the point midway between the two charges, and it moves along the line con..

  Explain the construction of a electromagnetic velocity

Explain the construction of a electromagnetic velocity sensor and explain its working. In a bike speedometer the wheel diameter is 80cm what is the frequency of velocity sensor, which gives 1 pulse per rotation of wheel at a speed of 80Km/H?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd