Archive for the ‘Scale Episode’ category

Scale #12: Tipping in Nature and Show Closing

February 17, 2012

Tipping points occur in nature, too, and we’ve got some cool footage to prove it. Then, it’s our custom to close the show with a snack. This time: cookies! Scale is important to baking, as we will see with cookies of various sizes baked for the same amount of time.

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Scale 12 Download Links
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Scale #11: Avalanches

January 27, 2012

A dynamic example of scale and tipping point in nature is the avalanche! We’ve got a mini-avalanche machine to demonstrate what happens. Notice the pattern: the particles build, and build, and then they reach a tipping point and they fall.

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Scale 11 Download Links
Use these links to download the movies to your computer. You can “control+click” to save the file.
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Scale #10: Tipping Point

January 20, 2012

When you change scale, you affect stability. We’ve seen this demonstrated with the clay animals — now here’s another fun way to see this concept in action!

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Scale 10 Download Links
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Scale #9: Changing the Scale

December 30, 2011

When you change the scale of something, you can change its behavior! Here is a great way to demonstrate this concept using a board and a simple tool: a plane.

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Scale 9 Download Links
Use these links to download the movies to your computer. You can “control+click” to save the file.
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Scale #8: Robert Hooke

December 23, 2011

Robert Hooke amazed his contemporary scientific community with what he found while using a microscope. He looked at the world on a different scale, and you could say that he even looked at a different world! Modern-day scientist David Randall of CMMAP (Center for Multiscale Modeling of Atmospheric Processes) explains how he thinks of scale when doing his work on weather and climate.

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Scale 8 Download Links
Use these links to download the movies to your computer. You can “control+click” to save the file.
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Scale #7: Heat Packs

December 2, 2011

The science of weather can be challenging because large changes can occur with a simple change on the molecular level. Case in point? These heat packs… they are in a liquid state, but have been supercooled. That is, they want to be solid, but don’t know how to get there. However, if one tiny little crystal can be formed, all of the other molecules can use that point as a way to become solid. By snapping the metal tab inside of them, we can create a reaction and help the liquid become a solid. (As a fun side note, these are therefore heat packs because the phase change releases the stored energy in the liquid.)

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Scale 7 Download Links
Use these links to download the movies to your computer. You can “control+click” to save the file.
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Scale #6: Salt Crystals

November 25, 2011

Happy Thanksgiving to everyone! In case that turkey and gravy wasn’t salty enough, we’ve got you covered. Here’s the scale of salt — what do you notice when the size changes?

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Scale 6 Download Links
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