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There are 26 videos in this category and 115 videos in 16 subcategories.
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Not Right For WatchKnowLearn
Ages: 12 - 18
1767 Views:
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We all know the words around electricity -- “charge,” “positive,”
“battery” and more. But where do they come from and what do they really mean? Let the history of these words illuminate the physics of electric phenomena. (06:56)
July 23, 2012 at 09:54 AM
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Not Right For WatchKnowLearn
Ages: 12 - 18
1391 Views:
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Shock and Awe: The Story of Electricity | BBC - Professor Jim Al-Khalili tells the electrifying story of our quest to master nature's most mysterious force - electricity. Until fairly recently, electricity was seen as a magical power, but it is now t...he lifeblood of the modern world and underpins every aspect of our technological advancements.
Without electricity, we would be lost. This series tells of dazzling leaps of imagination and extraordinary experiments - a story of maverick geniuses who used electricity to light our cities, to communicate across the seas and through the air, to create modern industry and to give us the digital revolution. (2:56:15)
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January 15, 2013 at 07:09 PM
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Not Right For WatchKnowLearn
Ages: 14 - 18
794 Views:
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In this clip, we learn about the birth of the power grid created by Thomas Edison. Learn about how it has evolved over the years. (01:35)
January 12, 2013 at 04:52 PM
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Not Right For WatchKnowLearn
Ages: 14 - 18
779 Views:
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In this clip, we see a technician maintaining live power lines. A helicopter is flown close up to the wire so that the technician can repair a weak spot in the power line. (03:23)
January 12, 2013 at 05:00 PM
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Not Right For WatchKnowLearn
Ages: 13 - 18
424 Views:
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An introduction to Resistance. We also define ohmic versus non-ohmic with graphs. We define the slope of the graph as resistance. There is also a discussion of a graph of Electric Potential Energy as a function of Position and we compare it to the... Mechanical Energies in the Spacewarp. Lastly, we derive the three equations for Electric Power. (13:36)
Content Times:
0:30 Defining Electrical Resistance
1:14 The Dimensions for Resistance (ohms)
2:57 Ohmic vs. Non-Ohmic
5:03 A Graphical Look at Energy in a Basic Circuit
8:47 Spacewarp! (A Mechanical Equivalent of the Electric Circuit)
10:07 Deriving the Equations for Electric Power
13:16 The Dimensions for Power (watts)
Want Lecture Notes?
Next Video:
Finding the Cost to Power Light Bulbs and Defining KiloWatt Hour
Previous Video:
Introduction to Conventional Current and Direct Current with an Example Problem
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December 2, 2013 at 05:11 PM
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Not Right For WatchKnowLearn
Ages: 7 - 18
3395 Views:
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For a long time, electricity was regarded as a force of nature over which we had no control. Michael Faraday found a breakthrough and developed the electric motors became widespread in industry within the space of a few decades. This video also talks... about other scientists and how they added to the understanding of how electricity works. This 14 minute video has good images and covers a great many concepts. A list of the famous scientist mentioned would be a help to students as the names of some many be difficult for them to study. Teachers may want to follow up this introduction with additional research or to duplicate similar experiments at their level. There is a commercial in the middle of the video. Many inventions mentioned.
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March 6, 2011 at 12:23 PM
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Not Right For WatchKnowLearn
Ages: 14 - 18
517 Views:
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Learn about what happens during a black out in this clip from America Revealed. The clip explores the major black out that happened in New York in 2003. (02:59)
January 14, 2013 at 11:06 AM
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Not Right For WatchKnowLearn
Ages: 8 - 12
2103 Views:
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Electricity is a form of power that is produced by the movement of electrons. Static electricity and lightning are natural forms of electricity, and they occur when electrons jump from one object to another. Learn more about electricity with this c...artoon animation from StudyJams. A short, self-checking quiz is also included with this link.
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June 4, 2011 at 08:24 PM
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Not Right For WatchKnowLearn
Ages: 7 - 11
3896 Views:
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Learn about electricity and circuits with this 3 minute music video from School House Rock. (03:00)
April 15, 2010 at 10:11 AM
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Not Right For WatchKnowLearn
Ages: 11 - 18
1822 Views:
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Electricity is used to light up a bulb by heating up the tungsten filament to the point that it glows white. Find out why light bulbs burn out with information from science teacher, Steve Jones. There are English captions.
May 11, 2010 at 08:33 PM
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