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Overview of the uses of the electromagnetic spectrum in daily and military life. Many nations around the world, including the United States, are facing a challenge regarding the use of the electromagnetic spectrum. Wireless devices in our modern world work because of a powerful resource called the electromagnetic spectrum. The spectrum includes radio waves, infrared, visible light, ultraviolet light, x-rays, gamma rays, and cosmic rays. Countless examples are given of things in our world that rely on electromagnetic spectrum. (07:51)
Found by etorgerson@d15.us in Electromagnetic
April 4, 2010 at 08:01 PM
Ages: 12 - 18
License: Proprietary
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Song by Emerson and Wong Yann. Song is about the electromagnetic spectrum and the different wave lengths. Shows which waves are the longest and the shortest. Song is okay but the information they give is good. (04:16)
Found by Barb in Electromagnetic
November 8, 2009 at 09:21 PM
Ages: 9 - 14
License: Proprietary
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Video discusses the electromagnetic spectrum. It starts with the various wave lengths and where visible light is found. Visible light is represented by only one inch on an electromagnetic scale of over 2,000 miles. (02:14)
Found by Barb in Electromagnetic
November 8, 2009 at 09:13 PM
Ages: 9 - 18
License: Undetermined
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Views: 4159 |
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Technological advances have made wide use of electromagnetic waves. This interactive activity from the NOVA Web site provides a self-guided tour of the electromagnetic spectrum, including examples of some of the most common uses of different types of waves.
Found by Mrs Jefferies in Electromagnetic
May 25, 2012 at 11:32 PM
Ages: 14 - 18
License: Proprietary
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This is the 2nd lesson in the series, "Investigating Electromagnetic Radiation." It examines the electromagnetic spectrum in detail, paying special attention to the spectrum of colors of visible light. (17:05)
Found by begamatt in Electromagnetic Radiation (Mindset Series)
April 13, 2011 at 04:54 PM
Ages: 14 - 18
License: Proprietary
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NASA's Fermi Gamma-Ray Telescope is finding hundreds of new objects at the very edge of the electromagnetic spectrum. Many of them have one thing in common: Astronomers have no idea what they are. (03:28)
Found by teresahopson in Electromagnetic
September 27, 2012 at 06:24 PM
Ages: 11 - 18
License: Proprietary
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Views: 2262 |
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The electromagnetic spectrum allows physicists to classify different types of electromagnetic waves on the basis of their wavelengths and frequencies. What determines the wavelength and frequency of a given wave and distinguishes one wave on the spectrum from another is the amount of energy each wave carries -- specifically, the level of energy in the photons of each. This video segment adapted from FRONTLINE explores the different types of radiation represented by electromagnetic waves and how their properties vary. (01:22)
Found by begamatt in Electromagnetic
August 12, 2010 at 08:18 PM
Ages: 11 - 18
License: Proprietary
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Views: 1730 |
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Explore the ways scientists use technology to see infrared light, including the ways we sense infrared radiation as heat and use space-based sensors to map conditions and changes on Earth’s surface. This video from NASA introduces and explains the concept of Earth’s radiation budget and the possibilities and consequences of it being out of balance. The video also describes the use of infrared sensing in astronomy. (05:22)
Found by Mrs Jefferies in Electromagnetic
May 6, 2012 at 11:17 PM
Ages: 12 - 18
License: Proprietary
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Views: 615 |
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The colors that surround us provide a rich visual experience. In this workshop we will create rainbows and learn how and why these magnificent phenomena occur in the sky. After looking at the Sun's electromagnetic spectrum we will explore the reflection and refraction of photons of light. We will also examine color televisions and look closely at the pixels which form images, and investigate the primary colors of light and pigments.
Found by laneyk in "Science in Focus: Shedding Light on Science"
March 25, 2010 at 09:01 PM
Ages: 18 - 18
License: Undetermined
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Light and Color
From teachersdomain.org, produced by WGBH Educational Gouindation
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In this video segment adapted from Shedding Light on Science, learn about the dispersion of light, the electromagnetic spectrum, and how sunlight contains a range of wavelengths (photons of differing energy). Isaac Newton investigated sunlight by shining it through a glass prism; after the prism refracted the light, he saw a spectrum of colors. He recognized that sunlight was made up of many colors, which could not be further separated when passed through a second prism. Drops of water in the air have the same dispersion effect. In the video, a bowl of water is used to simulate a giant raindrop to show how the differing angles of refraction of different wavelengths create rainbows. Run time 03:55.
Found by begamatt in Properties of Light
August 12, 2010 at 08:43 PM
Ages: 11 - 18
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In this interactive activity adapted from NASA, learn about radio waves and how astronomers use them to study objects in space. Understand how radio waves are part of the electromagnetic spectrum and explore how the frequency, wavelength, and speed of a wave are related to each other. Investigate the differences between radio waves and sound waves and learn how astronomers use radio waves to create images. Compare optical and radio images of galaxies and nebulas.
Found by Mrs Jefferies in Waves
May 26, 2012 at 10:30 PM
Ages: 10 - 18
License: Undetermined
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In this interactive activity adapted from the University of Utah’s ASPIRE Lab, learn about wavelength. Use a ruler to measure the distance from crest to crest on a simple waveform to find its wavelength. Then, investigate how wavelength varies across the electromagnetic spectrum and how the colors of visible light are related to wavelength.
Found by Mrs Jefferies in Visible Light
May 27, 2012 at 03:17 PM
Ages: 10 - 18
License: Proprietary
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Views: 2731 |
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Beyond what we can touch, taste, smell, and hear, we experience the universe through light. But how did we come to discover light, and how did we learn light’s true nature, as the fastest thing in the universe, an electromagnetic spectrum, a wave and particle capable of the most amazing things? Here is the history of light, according to physics. (07:08)
Found by teresahopson in Light and Sound
June 19, 2018 at 09:45 AM
Ages: 12 - 18
License: Proprietary
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Frequency
From pbslearningmedia.org, produced by WGBH Educational Foundation
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In this interactive activity adapted from the University of Utah's ASPIRE Lab, learn about the frequency and period of an oscillating object. Vary the time it takes a child to jump up and down on a trampoline to see how that changes the frequency of the jumping motion. Next, change the period of a pendulum by adjusting the length of its string and see the mathematical relationship between period and frequency. Finally, see how the electromagnetic spectrum consists of a range of frequencies.
Found by Mrs Jefferies in Momentum
May 4, 2012 at 09:34 PM
Ages: 11 - 18
License: Public Domain
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In this interactive activity adapted from NASA, learn how scientists use the electromagnetic spectrum to identify materials. Animations illustrate how spectrometers separate light across the spectrum and how line spectra are created. Learn how patterns of absorption and emission lines can be used as fingerprints to identify the chemical composition of an object.
Found by Mrs Jefferies in Properties of Light
May 22, 2012 at 10:25 PM
Ages: 10 - 18
License: Public Domain
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An introduction to electromagnetic induction for students studying for International Bacc., but also useful for other students on higher-level courses. The presentation is supported by many experimental demonstration including the dynamo and motor effects, Faraday's Law and magnetic flux. (16:33)
Found by SHSMrG in Electromagnets
May 16, 2011 at 05:12 AM
Ages: 15 - 18
License: Proprietary
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This is the 4th lesson in the series, "Investigating Electromagnetic Radiation." It examines what happens when light in shone on different surfaces and how pigments give objects their color. It also reviews the difference between emission and absorbtion spectra. (16:59)
Found by begamatt in Electromagnetic Radiation (Mindset Series)
April 13, 2011 at 05:04 PM
Ages: 14 - 18
License: Proprietary
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This is the 3rd lesson in the series, "Investigating Electromagnetic Radiation." It briefly reviews Huygen's Principle, Newton's ideas, Maxwell's model, and Einstein's theory. Then, using Millikan's famous photoelectric effect experiment, this lesson teaches how to conduct the experiment, analyse its results, and use equations to solve photoelectric problems. (19:29)
Found by begamatt in Electromagnetic Radiation (Mindset Series)
April 13, 2011 at 04:59 PM
Ages: 14 - 18
License: Proprietary
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This is the 6th lesson in the series, "Investigating Electromagnetic Radiation." It investigates how to apply the idea of wave-particle duality to matter. It shows how to use wave-particle duality to calculate the wavelength of sub-atomic particles and describes how electron microscope works. (19:15)
Found by begamatt in Electromagnetic Radiation (Mindset Series)
April 13, 2011 at 05:12 PM
Ages: 14 - 18
License: Proprietary
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This is the 5th lesson in the series, "Investigating Electromagnetic Radiation. It describes how lasers work and explains how to calculate the energy of a laser beam. (15:17)
Found by begamatt in Electromagnetic Radiation (Mindset Series)
April 13, 2011 at 05:08 PM
Ages: 14 - 18
License: Proprietary
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This is the 1st lesson in the series, "Investigating Electromagnetic Radiation." It reviews how to determine the properties of electromagnetic radiation. (17:01)
Found by begamatt in Electromagnetic Radiation (Mindset Series)
April 13, 2011 at 04:49 PM
Ages: 14 - 18
License: Proprietary
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After Oersted's 1820 discovery that electric currents create magnetism, it was obvious that in some way magnetism should be able to create electric currents. The discovery of electromagnetic induction, in 1831, by Michael Faraday and Joseph Henry was one of the most important of the 19th century, not only scientifically, but also technologically, because it is the means by which nearly all electric power is generated today.
Found by laneyk in Current
March 22, 2010 at 10:26 PM
Ages: 14 - 18
License: Undetermined
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Views: 962 |
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Amazing! Video shows how to pop popcorn using three cell phones.
Found by Barb in Electromagnetic
November 8, 2009 at 09:32 PM
Ages: 9 - 15
License: Proprietary
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Views: 3309 |
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This ten-minute video It talks about the four fundamental interactions of gravitation, weak interaction,electromagnetism, and strong interaction. The video uses a smart board and a narrator. (10:29)
Found by freealan in Gravity - Khan Academy
August 14, 2011 at 10:19 PM
Ages: 10 - 18
License: CC by-nc-nd
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Views: 2913 |
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Gravity, Weak, Electromagnetic and Strong (10:29)
Found by teresahopson in Introduction to Physics
June 3, 2012 at 03:28 PM
Ages: 12 - 18
License: CC by-nc-nd
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Views: 3419 |
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