Hat tip to freeper Roscoe Karns.
Posted on 09/18/2018 2:22:00 PM PDT by ETL
Have you ever seen lab videos of a piece of ultra-chilled metal floating or spinning above a magnet?
Now THAT is magic.
You Tube has lots of videos under search term “super conducting magnets.”
One professor actually built a Mobius Strip roller coaster from magnets with a super chilled little car that zooms above (and below!) the track.
We were doing experiments inside the chamber where a patient normally goes. One very cool thing: We used aluminum rulers and yardsticks. I could take an aluminum yardstick into the entrance, and try to turn it along its length. Very high resistance to rotation. Eddy currents generated by the feild in turn, generate opposing magnetic field. I could almost put a permanent twist in it turning it hard. Like it was embedded in clay.
I remember Dick Tracy really well.
B.O. Plenty, Sparkle Plenty, Moon Maid, 2-way wrist radio, Diet Smith, etc.
Hat tip to freeper Roscoe Karns.
It was beautifully written, and even more interesting than your original post.
It was the most shockingly irreverent and hysterically funny thing I had ever seen in my young life.
Still laughing 60 years later!
Perhaps. But it could also be some trammpy-looking girl coming back from the beach looking to hook up with a rich guy in a Lambo.
You’re welcome. Glad you liked it. Check out the Nova documentary I linked to on magnetic fields of earth and other planets.
Magnetically Levitating Mice
NASA has built a device that keeps mice floating to study the health effects of spaceflight.
...a magnetic field of 17 teslas
...The researchers have shown previously that the device can levitate water-based items for hours, but were skeptical that it would be able to make a mouse, weighing10-grams, float for long periods of time. Yet, they were able to “fly” the mouse for hours, allowing it to roam freely, and giving it food and water.
https://www.technologyreview.com/s/415306/magnetically-levitating-mice/#comments
:^) My pleasure.
Dick Tracy?
The Zot Machine
That looks more like a ho magnet.
.
I’ve learned more about the mechanics of stars from that one post at #20 than I have in my entire life up until now.
Thank-you.
Levitating Mice...
First time I’ve read about that.
Quite amazing.
2nd place!
Someone else answered before you.
:)
Some of the Amazon reviews for neodymium magnets are pretty funny.
I was a sysadmin in a shop that looked like a used parts store. We would cannibalize old server components that were going to be discarded and reassemble them into “Frankenstein” servers. However, the most fun we had was disassembling the hard drives for the rare earth magnets. You could take two of them and stick them on either side of your beefy hand. We made some pretty cool stick figures with them too. We had absolutely no problems hanging framed pictures on the metal walls...
You're welcome.
I actually screwed up on the post, leaving out the first 2 paragraphs.
Here they are below...
Artist's impression of the magnetar in star cluster Westerlund 1
I'll be honest: Magnetars freak me out. But to get to the "why," I have to explain the "what." Magnetars are a special kind of neutron star, and neutron stars are a special kind of dead star.
They're easy enough to make — if you're a massive star. All stars fuse hydrogen into helium deep in their cores. The energy released supports the stars against the crushing weight of their own gravity and, as a handy byproduct, provides the warmth and light necessary for life on any orbiting planets. But eventually, that fuel in the core runs out, allowing gravity to temporarily win and crush the star's core even tighter.
With the greater pressure, it becomes helium's turn to fuse..."
https://www.space.com/30263-paul-sutter-on-why-magnetars-are-scary.html
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