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Videos worth watching

Tacoma Bridge Disaster - Galloping Gertie

Posted by Diego Fonstad
Diego Fonstad
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on Saturday, 09 April 2011
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Teachable Moment: The Tacoma Narrows Bridge collapse has long been used as an example of forced resonance in physics text books but recent analysis suggests aerodynamically induced "forced excitation" (see second reference) may have been the cause.  Either way, the video footage is dramatic and encourages great discussion!

The 1940 Tacoma Narrows Bridge was the first incarnation of the Tacoma Narrows Bridge, a suspension bridge in the U.S. state of Washington that spanned the Tacoma Narrows strait of Puget Sound between Tacoma and the Kitsap Peninsula. It opened to traffic on July 1, 1940, and dramatically collapsed into Puget Sound on November 7 of the same year. At the time of its construction (and its destruction) the bridge was the third longest suspension bridge in the world in terms of main span length, behind the Golden Gate Bridge and the George Washington Bridge.

Tags: Engineering
Hits: 87913

22 Years of Sea Surface Temperatures

Posted by Diego Fonstad
Diego Fonstad
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on Thursday, 07 April 2011
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22 Years of Sea Surface Temperature ChangesThe NOAA polar-orbiting satellites (POES) have been collecting sea surface temperature data for over 22 years. This animation is a compilation of that data from January 1985 - January 2007. Of note are the changes in the Gulf Stream, El Nino and La Nina cycles in the Pacific, and the seansonal changes in sea ice cove.

 

Hits: 26475

Visual Proof of the Pythagorean Theorem

Posted by Diego Fonstad
Diego Fonstad
Diego Fonstad has not set their biography yet
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on Monday, 04 April 2011
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Simple one minute video provides a visual elegant proof of the Pythagorean theorem.

 

 

Tags: Math

How hard can it be? Real life UP balloon launch.

Posted by Diego Fonstad
Diego Fonstad
Diego Fonstad has not set their biography yet
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on Friday, 01 April 2011
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How much helium does it take to lift a house with balloons?Teachable Moment: Well... it's a cool video.  Beyond that, it might be fun to try to figure out how big those balloons are and calculate how much helium would have to be used to lift a house!

The National Geographic Channel will be premiering a new series in the Fall of 2011 called "How hard can it be?"

So of course, they decided to see how hard it would be to make a house float as in UP.

Tags: Random
Hits: 22842

Inner Life of a Cell - Biovisions Harvard University

Posted by Diego Fonstad
Diego Fonstad
Diego Fonstad has not set their biography yet
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on Friday, 01 April 2011
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biovisions logoTeachable Moment: Beautiful visualization of the inner workings of a cell.

Research in the biological sciences often depends on the development of new ways of visualizing important processes and molecules. Indeed, the very act of observing and recording data lies at the foundation of all the natural sciences. The same holds true for the teaching and communication of scientific ideas; to see is to begin to understand. The continuing quest for new and more powerful ways to communicate ideas in biology is the focus of BioVisions at Harvard University.

Tags: Biology
Hits: 46778

The Story of Bottled Water

Posted by Diego Fonstad
Diego Fonstad
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on Tuesday, 29 March 2011
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Teachable Moment: How do you explain the impact that drinking bottled water has on our world... charts and statistics make people's eyes glaze over... this straight-forward, hard-hitting cartoon makes an otherwise challenging problem, easy to understand.

Card Flip Magic: Error Detection and Correction

Posted by Diego Fonstad
Diego Fonstad
Diego Fonstad has not set their biography yet
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on Monday, 21 March 2011
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Teachable Moment: Math + Magic = Learning without knowing you're learning math.

The world is noisy place, and errors can occur whenever information is stored or transmitted. Error detection techniques add extra parity bits to data to determine when errors have occurred.

 

Tags: Math
Hits: 23918

Neural Field

Posted by Diego Fonstad
Diego Fonstad
Diego Fonstad has not set their biography yet
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on Saturday, 12 March 2011
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Neural FieldTeachable Moment: This video about signals passing through neurons is as visually stunning as Blade Runner. 

Beautiful video produced as part of the Duquesne University Regenerative Medicine Partnership in Education.

Observe the signals passing through a single neuron and then travelling through the spinal cord - where the longest neurons can be found!

Tags: Biology

March 11, 2011 Honshu Tsunami Propagation

Posted by Diego Fonstad
Diego Fonstad
Diego Fonstad has not set their biography yet
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on Friday, 11 March 2011
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Honshu Tsunami PropagationTeachable Moment: Great video using the NOAA MOST Model.

The MOST (Method of Splitting Tsunami) model, developed by Titov of PMEL and Synolakis of University of Southern California, is the standard model used at the NCTR. MOST is a suite of numerical simulation codes capable of simulating three processes of tsunami evolution: earthquake, transoceanic propagation, and inundation of dry land.

Tags: Geology
Hits: 30081

Lego Antikythera Mechanism

Posted by Diego Fonstad
Diego Fonstad
Diego Fonstad has not set their biography yet
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on Wednesday, 09 March 2011
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Lego Antikythera MechanismTeachable Moment: It's easy to dismiss this as "I guess some people will try to build anything with Lego" but it highlights how simple building blocks (OK... it uses some differential gears which aren't that "simple") when properly and cleverly combined can make complex computations.

 

Hits: 12376