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Course: Breakthrough Junior Challenge > Unit 1
Lesson 3: 2015 Challenge — Physics- Special theory of relativity - 2015 Challenge Winner!
- A visualization of special relativity
- Chromatic aberration
- Orbital mechanics
- What is light?
- Special and general relativity
- The science of fireworks
- Quantum tunneling
- Antimatter
- Special Relativity
- What Einstein missed: The EPR paradox
- Virtual particles and gravity
- Interstellar and Hawking radiation
- All about superconductors
- Entropy and the direction of time
- Magnetism, light and the magneto optic Kerr effect
- The theory of everything
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All about superconductors
By Holly Hoffbauer
Superconductors are these marvelous materials that have the ability to do so much, including levitation! Using zero electrical resistance they can defy gravity seamlessly. Superconductors are truly captivating and everyday scientists are discovering new things about them.
Superconductors are these marvelous materials that have the ability to do so much, including levitation! Using zero electrical resistance they can defy gravity seamlessly. Superconductors are truly captivating and everyday scientists are discovering new things about them.
Want to join the conversation?
Did anyone else have a hard time focusing on what Holly was saying? Got a bit distracted tbh xD(7 votes)- Absolutely! I think that seeing video author, no matter how good looking it is, doesn't help learning the subject. :D And small short cut video scenes were so fast, that it made even harder to follow.(1 vote)
so what are the possibilities for superconductors? Too numerous to count?(5 votes)- High temperature super conductors could make nuclear fusion a viable clean energy source.(1 vote)
Aren't there high temperature superconductors?(1 vote)
So called "high-temperature superconductors" actually work at extremely low temperatures. The current record, I believe, is -140º C (-220º F) for normal pressure. For you and me, that's pretty cold!, but superconductors work best around absolute zero (-273° C -459° F). For scientists, then, they are "high-temperature superconductors". As you might imagine, that isn't quite as high of a temperature as would help with practical, low cost, large scale operations. Hope that clears up some confusion.(3 votes)
My god she's beautiful(2 votes)
Can any conductor (made of any material) be changed to a superconductor just by reducing its surrounding temperature to a given threshold level?(1 vote)
Is there a challenge this year too?(1 vote)
Hypothetically, if i were able to get a superconductor to super conduct per-say. Is there a way to defy gravity on a larger scale like say a human floating above the superconductor??(1 vote)- Let me rephrase that, If I were to get a magnet large enough to hold my weight, and I were to heat the superconductor to its superconducting state and put the two together would I be able to "Float above the superconductor?"(1 vote)
Why does type ii superconductors take longer to become a superconductor?(0 votes)
Why is she reading a script during the video, rather than memorizing the lines?(0 votes)- Because sometimes it's hard memorizing the lines of a 10-minute video(5 votes)