Confirming the Delayed Lenz Effect

[Magluvin]

"@all


Hi , i know that one i used to have a pdf copy of a old book called AC electromagnet , and it could pick up any thing plastic you name it .

I will see it i could find it again i tried before without succes.

Mark

I believe I have read that old book in the public library from my home town in PA. Do you remember if it used multiple windings and copper washers? It wasnt just a winding it on a core thing. It could pick up pennys, dimes, etc. I dont remember plastics.

My mom used to like bingo  here n there, and some of the players used dimes or pennys to cover the numbers on the cards, and they had a hand held plastic box like the sizs if a medium cell phone or cigarette pack and swipe it over the cards to pick up the coins for the next round.

In electronics class back in the days, the teacher discussed what metals a magnet or electromagnets could pick up. I told him of that and he disagreed. I brought in the old book and that was the point where, everyone in the class took my crazy ideas more seriously. Before I brought the book in they thought I was nuts.

If you can find that, I would really appreciate that. 

Thanks

Mags

[conradelektro]

Hi Folks,

Single wire coil test        Bifilar wire coil test

first lift     11 nuts                   12 nuts
second lift  8 nuts                     9 nuts
third lift    13 nuts                    11 nuts
fourth lift    9 nuts                    10 nuts
fifth lift        9 nuts                     8 nuts

This shows the performance of the two electromagnets practically the same.

Gyula

I wish we saw more such straight forward and useful tests.

Thank you Gyula, after pages of waffle, finally something tangible.

Conrad

[Magluvin]

Thank you Gyula. The original experiment involved  shorting both coils accross a "D" cell battery. The obvious difference between the experiments is that power is free to rise to load with the battery, unlike Gyula's latest try, where the power is governd. Maybe the bifilar electromagnet will draw more input then Gyula's inputing to it, if you feed it. The original experiment allows for increased current consumption compared to Gyula's generous attempt. Enlighting regardless!

That makes sense. If the supply limits current then its possible that the low ohms of the 2 coils could push those current limits on their own, possibly not letting the currents needed bi the bifi to occur. Dunno yet.  But will. 

Mags

[gyulasun]

"@all


Hi , i know that one i used to have a pdf copy of a old book called AC electromagnet , and it could pick up any thing plastic you name it .

I will see it i could find it again i tried before without succes.

Mark

Hi,

I also remember this book. However, conduction is a key factor for the principle shown in it so metals (even if they are non-ferrouos) able to conduct electric current can be involved. The principle is inducing eddy current in a metal piece by the changing AC field.
Here is a link to the PDF file:  http://www.themeasuringsystemofthegods.com/Non-ferrous%20metals.pdf

Gyula

[Magluvin]

Hi,

I also remember this book. However, conduction is a key factor for the principle shown in it so metals (even if they are non-ferrouos) able to conduct electric current can be involved. The principle is inducing eddy current in a metal piece by the changing AC field.
Here is a link to the PDF file:  http://www.themeasuringsystemofthegods.com/Non-ferrous%20metals.pdf

Gyula

Great pdf. Thanks.

But the book I read was a book of electronic(or electric) experiment projects. I dont remember if it was older than 1952. But it was just one of the projects it presented. But this one you have shown, gives a lot of info to where one could learn a lot in one sitting.  Good one.

Mags