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This webpage includes two quadratic equation videos that are a part of a series of lessons on math provided by DeafTEC. Gary Blatto-Vallee, a math and science instructor at the National Technical Institute for the Deaf, guides viewers through a variety of mathematical exercises in this DeafTEC video...

This video, from the National Center for Optics and Photonics Education, demonstrates "quick methods to determine which side of a precision optic is coated, and which colors may be affected by the coating." The video first shows uncoated precision windows, followed by coated precision optics, and...

This video, made available by the National Center for Optics and Photonics Education (OP-TEC), demonstrates diffraction gratings using three types of lasers on a compact disc (CD), digital versatile disc (DVD), and blu-ray disc (BD). The video runs 5:29 minutes in length. 

This video, made available by National Center for Optics and Photonics Education (OP-TEC), demonstrates several techniques used to determine the focal length of both positive and negative lenses. The video runs 3:02 minutes in length.

This video, from the National Center for Optics and Photonics Education, serves as a brief introduction to Interferometry, or the scenario in which "waves, usually electromagnetic, are superimposed in order to extract information about the waves," for investigative purposes. Discussed in this video...

This video, created by the National Center for Optics and Photonics Education, discusses the fundamentals of optical shops, by focusing on tools commonly found in these workspaces. Tools discussed include digital calipers, micrometers, height gauges, and more.   The video runs 5:00 minutes in...

This video, created by the National Center for Optics and Photonics Education, discusses polarimetry as it develops in stressed optics. As defined in the video, polarimetry is "the measurement and interpretation of the polarization of transverse waves," such as radio or, as in the case of this...

This video, from the National Center for Optics and Photonics Education, demonstrates how refraction - "the change in direction of propagation of a wave due to a change in its transmission medium" - works. Throughout, an individual shines a red light through differently-shaped prisms to move the...

This video, published by the National Center for Optics and Photonics Education (OP-TEC), is from module one of the Quality Assurance of Precision Optics course, which "provides an introduction to quality assurance practices required to identify, inspect, and measure optical components." During the...

This video, made available by the National Center for Optics and Photonics Education (OP-TEC), demonstrates quality assurance strategies for precision optics in a lighted inspection box. In the video, several types of scratch-dig references and a Loupe magnifier are used to test scratches and digs....