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Lesson Plans College Level - Bright Ultraviolet and Soft X-Ray Beam Source (Advanced Light Source) "The Advanced Light Source (ALS), a division of Berkeley Lab, is a national user facility that generates intense light for scientific and technological research. As one of the world's brightest sources of ultraviolet and soft x-ray beams--and the world's first third-generation synchrotron light source in its energy range--the ALS makes previously impossible studies possible." 12-02 Lesson Plans on Light (GELighting.com) Provides over a dozen lesson plans on light. 9-04 Light Properties (University of California - Battle) Provides a lesson to study the properties of light, especially as applied to astronomy. 3-01 Spectral Wavelengths (University of California) Provides a lesson to study spectral wavelengths, using data from four different satellite observatories. 3-01 Multimedia Relativity (Time) Provides audio of Einstein explaining that energy equals mass times the velocity of light squared. 1-00 News -01-05-06 Experiments Help Explain "Floppy" Space Molecule (Physorg.com) "A laboratory method developed for making and analyzing cold, concentrated samples of a mysterious 'floppy' molecule thought to be abundant only in outer space has revealed new data that help explain the molecule's properties." "The advance, described in the Jan. 6 issue of Science,* is a step toward overcoming a decades-old challenge in chemistry--explaining reactions that occur within very cold clouds among the stars, and perhaps for developing new chemical processes." 01-06 -03-17-07 High School Student Wins Award for Spectograph (ABC News) "Mary, a senior at Westmore High School in Oklahoma City, won first place in the 2007 Intel Science talent search competition, beating out 40 other contestants and winning a $100,000 college scholarship." "While these devices already exist, there is one key difference between Masterman's spectrograph and those being used today. Spectrographs can cost a hundred thousand dollars to build, but Mary built hers for $300 out of household parts, and hopes that it might help make research cheaper and easier in the future." 03-07 06-23-03 Speed of Gravity Not Yet Proven (SpaceDaily.com) "Albert Einstein may have been right that gravity travels at the same speed as light but, contrary to a claim made earlier this year, the theory has not yet been proven." 6-03 Papers Blueshift (Wikipedia.org) "Blue shift is the phenomenon that the frequency of an electromagnetic wave (such as light) emitted by a source moving towards the observer is shifted towards the blue end of the spectrum (that is, its wavelength is decreased)." 10-04 Color Basics - Primary Colors (Parker) Provides information on mixing colors. When mixing light, the primary colors are red, blue, and green. When mixing paint, which this article discusses, the primary colors are yellow, magenta, and cyan. However, true magenta and cyan have not historically been available. "In the absence of magenta and cyan, red and blue can sort of be used as primary colors...." 9-01 Infrared Photovoltaic Cells (J X Crystals) Describes a new cell, thermophotovoltaic (TPV), that converts infrared light into electricity. It can be used in a furnace, for example, to convert wasted infrared heat into additional electricity. 6-01 Lasers Promise Greatly Improved Interplanetary Communications (NewScientistsSpace.com) "Interplanetary space probes currently communicate via microwaves, but those transmitters are not as tightly focused as laser beams. This spreading reduces microwave power received, and thus the maximum data rate. For example, NASA's Mars Odyssey probe can send only 128,000 bits per second to Earth." "Because laser beams spread much more slowly, they can deliver more power to ground-based optical receivers, allowing higher data rates." 01-06 Light (Wikipedia.org) "Light is electromagnetic radiation with a wavelength that is visible to the eye, or in a more general sense, any electromagnetic radiation in the range from infrared to ultraviolet." 10-04 Light - Properties of Light (Encyclozine.com) Provides basic information on the nature of light and defines key terms. 5-01 Light - Speed of Light May Be Changing (New Scientist) Provides a summary of research that shows that the speed of light, one of the most important constants in physics and astronomy, may be changing. 8-01 Light Waves Used for Database Searches (Macmillan Publishers - Nature - Ball) Describes a process for using light waves to conduct searches for data on a computer, expected to yield a billion-fold increase in speed over current electronics-based searches. 5-01 Light-Years (Discovery.com) Describes light-years, a unit of measurement to stars and other distant bodies in space. Visitors sometimes call it light years. 3-02 Optics (Wikipedia.org) Provides 106 articles. 10-04 Optics Timeline (The Florida State University - Davidson) Provides a timeline from prehistory to 1999. 12-02 Photon Measurement (Nature) Provides news on a devise that measures photons in the far-infrared spectrum of light. It is 10,000 times more powerful than previous devices. Redshift (Wikipedia.org) "Redshift is the phenomenon that the frequency of light when observed, under certain circumstances, can be lower than the frequency of light when it was emitted at the source. This usually occurs when the source moves away from the observer, as in the Doppler effect." 10-04 Telescopes - A History and How They Work (Peter Piper Publishing) Provides a short history of telescopes and describes how they work. 6-02 Telescopes - A History and How They Work (Peter Piper Publishing) Provides a short history of telescopes and describes how they work. 6-02 Projects Colors and Heat (Blackout) Provides a project to demonstrate the relationship between colors in light from the sun and heat. 3-02 Discover the Colors of White Light (NASA Langley Research Center - SCIence Files) Provides a project to determine the colors in white light. (NASA has changed the name of this education site from Why Files to SCIence Files) 3-02 Prism Project (School.Discovery.com) "Using a prism, thermometers, and blueprint paper, students recreate the 18th-century experiments conducted by William Herschel and Johann Ritter that proved the existence of invisible waves of sunlight. They'll see with their own eyes that there are invisible parts of the spectrum that contain radiant energy." 1-04 Reflection of Light in Water (NASA Langley Research Center - SCIence Files) Provides a project to understand how light is reflected. 3-02

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