Mit Plasma Science and Fusion Center
@mitplasmasciencefusioncenter·7K subscribers·64 videos
Wide Plumb Line Floating in Magnetic Field of Superconducting Magnet
Posted
February 22, 2016
Views
789
Likes
5
Comments
1
February 22, 2016
789
5
1
0.76%
Every word spoken in this episode is indexed. Type any phrase to jump straight to the moment it was said.
Type any word or phrase that may have been spoken. Click a result to seek the player to that exact moment.
Try a name, a topic, or a quoted line
0:50Now PlayingThe steel plumb in this video is floating in a magnetic field created by a superconducting magnet which is housed behind the shielding visible on the right-hand side of the screen. A string keeps the plumb from crashing into the magnet housing. After being disturbed from its rest position, the plumb oscillates back and fourth like a pendulum.
The superconducting coil, itself, is wound from 1000 turns of YBCO tape in two layers (the "double pancake" design), and reaches 7 tesla in the space at its center, or about 100 000 times the strength of the Earth's magnetic field. It is cooled to 4 K (four degrees above absolute zero) with liquid helium, though the YBCO material is still superconducting at liquid nitrogen temperatures (77 K) and higher. The coil sits on its side, with its magnetic axis pointing roughly along the string connected to the plumb.
Magnet test performed at the Massachusetts Institute of Technology's Plasma Science and Fusion Center in February, 2016.
Please visit
for more information about the Plasma Science and Fusion Center.
Sentinel Indexing in Progress
Metadata and chapters are available. Claim extraction for this episode is pending.
All video content is delivered via YouTube embedded players in accordance with the YouTube Terms of Service. Sentinel provides research tools that promote discovery and accountability across political media.
