Using Laser Pointer to Measure the Data Track Spacing on CD´s and DVD´s
Al-Azzawi, O., Rashid, H. (2016). Using Laser Pointer to Measure the Data Track Spacing on CD´s and DVD´s. EKB Journal Management System, 1(First International Undergraduate Research Conference, IUGRC), 23-23. doi: 10.21608/iugrc.2016.91150
Omer Ali Yaseen Al-Azzawi; Hayfa G. Rashid. "Using Laser Pointer to Measure the Data Track Spacing on CD´s and DVD´s". EKB Journal Management System, 1, First International Undergraduate Research Conference, IUGRC, 2016, 23-23. doi: 10.21608/iugrc.2016.91150
Al-Azzawi, O., Rashid, H. (2016). 'Using Laser Pointer to Measure the Data Track Spacing on CD´s and DVD´s', EKB Journal Management System, 1(First International Undergraduate Research Conference, IUGRC), pp. 23-23. doi: 10.21608/iugrc.2016.91150
Al-Azzawi, O., Rashid, H. Using Laser Pointer to Measure the Data Track Spacing on CD´s and DVD´s. EKB Journal Management System, 2016; 1(First International Undergraduate Research Conference, IUGRC): 23-23. doi: 10.21608/iugrc.2016.91150

Using Laser Pointer to Measure the Data Track Spacing on CD´s and DVD´s

The International Undergraduate Research Conference
Article 12, Volume 1, First International Undergraduate Research Conference, IUGRC, 2016, Page 23-23  XML PDF (381.48 K)
Document Type: Original Article
DOI: 10.21608/iugrc.2016.91150
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Authors
Omer Ali Yaseen Al-Azzawi1; Hayfa G. Rashid2
1University of Technology- Department of Applied Science ,Iraq.
2Prof. Dr., Al-Mustansiryah University, College of Education, Iraq.
Abstract
We have probably noticed the colourful patterns "reflecting" from the shiny surface of a CD and DVD disk. What we are seeing is actually diffraction of white light, and the rainbows of colour are diffraction patterns. In this project, we will learn about how diffraction patterns are generated when CD and DVD disk are used as reflecting and transmitting diffraction grating . Further, the microscopic spacing of data tracks on a CD and DVD disk can be measured using a red laser pointer. AFM (Atomic Force Microscope) images indicates how close the track spacing to that macro-scale data that (optically measured).
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