Defying Gravity - HUGE Neodymium Magnet vs Copper Tube Experiment - The Power of Lenz's Law!

It's not the size, it's the GAP! Clearance of 1-2mm all-round will slow the magnet way more than 3-4mm. 👍😎 In your last video you can see how a thin plumber's pipe with a small gap to the magnet is MORE effective than a thicker copper pipe with a larger gap.

i am glade you are being less camera shy and good job with all the videos.

A furnace made out of a keg?!!! Brilliant!!!

I use small neodymium magnets in projects all the time and keep a variety of them on hand. People are amazed at the power of a 1/2" disc X 1/4" thick N52 grade magnet when I demonstrate them. And I keep a 1" N52 sphere and a 4' length of 1 1/4" copper water pipe on hand to demonstrate Lenz's law also. Even being familiar with it it never ceases to amaze me at how long it takes to drop through. That 3" magnet you are playing with is a monster. Be vigilant with it especially around the other large magnet. By the time you realize you made a mistake you may have already lost a finger. I've had a 1" magnet bite me pretty good and it happens fast.

Thanks for including the tube roll/levitation part! Clearly shows how the field acts like a fluid. Well done

A suggestion for you from a guy who has (probably) no experience with any of this -- look at the video @5:25. You have placed a constraint on yourself by pouring into the smaller gap in the mold. I suggest you rotate the mold 90 degrees so you can pour into an opening several times larger. I follow this recommendation while pouring cement from a mix truck off a chute and into a foundation form. I guess I have many tons of experience with this sort of thing after all! Excellent video.

Really appreciate your efforts, time and expense ..for this experiment. Thanks👍👍

I have seen this Over a thousand times but like a moth to a flame I am ready to see it again

Awesome demonstration. Foundry skills galore.

Idea... Polish you copper tube really well so it will spin on bearings laying down like u shoeed at 8:30 , but power spin the copper tube via belt connected to a motor so the tube spins and plce the magnet inside and see how stable the levitation is

NICE demonstration ！！！I believe this is the true beauty of experiments which you can never imagine with mere theories and excercises on the textbook!

I would have to say you did a very good job of pouring that

9:27 YESSSS I was thinking that would be a super cool shot just a few seconds before you did it. Having the string fall down at normal gravity speed while the magnet just slowly meanders down the pipe, so cool

I loved magnets since I was a very young child and have a large collection. I am now in my 60s and I was so excited when rare earth magnets became available. I have so many shapes and sizes and some that are to large to play with casually. Ive got bitten by some large magnets a couple of times. Luckily no broken bones but some massive blood blisters. Love your experiments.

Wonderful demonstration of your kiln work n magnetic magic

Wow! Really impressed w the way u did everything, such a cool effect

Next time you should do this, try letting your copper cool naturally instead of quenching it. Your cystaline structure of the copper will be alot different, they will be alot tighter structure. Your eddy currents alot different.

This is a really great concept to illustrate magnetic braking, or other principles that involve eddy currents. In magnetic braking, this concept is very similar to how actual magnetic braking works. I always like to show off this scientific concept to friends and family, as they are perplexed on how a magnet could slow down significantly on a copper plate due to resistance through the creation of eddy currents within the copper plate. Anyways nice video!

Sweet - what a beautiful example!

Amazing work Rob, love you