In this video excerpt from NOVA’s "Making Stuff: Smarter", host and New York Times technology columnist David Pogue visits Virginia Tech, where scientists are developing an artificial jellyfish that will act as an inconspicuous motion-detecting buoy for the Navy. The jellyfish is propelled by a shape-memory alloy that returns to its original shape after being exposed to heat. In the related demonstration, students discover some other shape-memory materials that can sense and respond to their environments. They also learn how materials scientists are developing new “smart” materials to help solve problems in engineering, medicine, and everyday life. CREDITS: https://www.pbslearningmedia.org/credits/nvms.sci.materials.smarterdemo/ LICENSE: https://www.pbslearningmedia.org/help/full-license-for-section-3c-of-terms-of-use-download-and-share/
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The theory of how the Grand Canyon was formed is shown in this animation from NOVA, and features rare footage of a phenomenon known as debris flow. CREDITS: https://www.pbslearningmedia.org/credits/ess05.sci.ess.earthsys.canyon/ LICENSE: https://www.pbslearningmedia.org/help/full-license-for-secti
In this video from NOVA’s Sun Lab, learn about the Sun’s ever-changing surface and magnetic field. Images and animations illustrate how the Sun’s magnetic field lines are affected by the motion of the Sun’s plasma. Over time, the magnetic field becomes twisted and more complex, which increases solar
In this video from NOVA’s Sun Lab, learn about the Sun’s composition and structure. The Sun is a plasma, primarily made of hydrogen with smaller amounts of other elements. Animations and images illustrate the physical and behavioral properties of the Sun’s six regions: the core, radiative zone, conv
