Lenz's law demonstrations - GIFs

**Jon** · Jun 28, 2019, 03:18 PM

Lenz's law demonstrations. First one has a gorgeous piece of copper, then we get to see it demonstrated via magnet paper, and finally with an MRI machine.

More: https://en.wikipedia.org/wiki/Lenz%27s_law

Previously:

Physics of baseball/bat collision - GIF
Magnet paper for revealing location of magnets inside devices - GIF
CAT scan machine spinning without cover

**Ralphxyz** · Jun 28, 2019, 07:52 PM

So what is Lenz's Law? I know Google it :-(

And what is that Green X-ray sheet?

**IAMSatisfied** · Jun 29, 2019, 08:13 PM

It's magnetic field viewer film...

https://www.amazon.com/12-Magnetic-F...-search&sr=8-7

**Ralphxyz** · Jun 30, 2019, 07:29 PM

Damm, I could handle the price util I saw the shipping, forget about it!!

Ralph

**IAMSatisfied** · Jun 30, 2019, 07:33 PM

Originally Posted by Ralphxyz

Damm, I could handle the price util I saw the shipping, forget about it!!

Ralph

You're right... I didn't notice that at first glance. Here's a smaller 4x6 sheet for $8.76 with Amazon Prime shipping: https://www.amazon.com/Magnetics-Gre...21-spons&psc=1

**marksbug** · Dec 20, 2020, 12:14 PM

thats fricken awsome!!!

**Toolmaker51** · May 21, 2021, 09:29 PM

Originally Posted by IAMSatisfied

You're right... I didn't notice that at first glance. Here's a smaller 4x6 sheet for $8.76 with Amazon Prime shipping: https://www.amazon.com/Magnetics-Gre...21-spons&psc=1

Speaking of thin and pricey; Mica is half that size for twice the cost. But I needed it for burner windows.

**12L14** · May 22, 2021, 03:22 AM

Silicone insulating washers/pads(for transistors etc.) costs next to nothing, mica ones are pricey - but still cheap compared to beryllium oxide ones(that is if you can get them - cause they are "big no no" in commie infested places...).