Electricity & Magnetism - The Learning Circuit

[@flowmastak1]

That was very informative and to the point. Well done Karen. I was actually posting to reddit asking about the molecular difference between fe and no fe metals and this answered that pretty well.

[@imrank340]

A great knowledge source, a reminder of the basic fundamentals of Magnetism and its properties; use. in general.

[@DAVIDGREGORYKERR]

An example of this is used in Compact Cassette or Reel to Reel tape decks for recording music or with a very fast rotating heads to record video.

[@dlang6487]

Another awesome video! I love these! I also love the IT crowd shirt 😁

[@testingattthing]

Always enjoy the learning circuit series. Thanks for this.

[@bartz0rt928]

Excellent video overall, but there's at least a few mistakes: gold and copper are diamagnetic, not paramagnetic. That's easy to demonstrate by dropping a magnet through a copper tube. It also makes sense that gold, silver and copper would be the same because they're in the same periodic group, which means they have a similar configuration of valence electrons. Also (and you may have omitted this for the sake of simplicity), superconductors are perfectly diamagnetic, we just haven't yet found a material that superconducts at room temperature.

[@element14presents]

Thanks for the feedback :)

[@reasonablebeing5392]

Another awesome vid. Would love to see you do one on OP-AMPs.

[@BarefootBushcraft]

Magnets!! I have a magnet collection myself... Yep, I'm that guy lol beautifully put Karen :) I always love your teaching style. Very easy to understand. Sorry I can't comment as often as I'd like. I hope you all have very happy holidays and a happy new years :) I wish you all the best for 2019

[@edmundblackadder2741]

This got me interested, my headphones have magnets in the buds so they stick together when your not using them, I always wondered how the magnetism doesn’t interfere with the headphones.

[@ccandrew111]

Danny Richie speakers and headphones pass current through a voice coil. This coil generates its own magnetic field which opposes the field of the permanent magnet. This allows the diaphragm to move and provide audio

[@edmundblackadder2741]

ccandrew111 I see! Thanks for clearing that up :D

[@andrascsirmaz3043]

I hoped for a short info about demagnetizing, or degaussing like with the old CRTs. :) Cool vid though!

[@stephenlantrip697]

Love your simplified teaching style. I feel if just watch it a few times, it'll soak in. Can you also do a video on RFID? Heard it involves separate magnetic field from static charge query signal, but not sure. Supposedly, prof. K. Meyl offers a kit o(at cost) to let experimenter prove answer themself. I'm scaredy-cat!

[@MrCardeso]

Thanks, Karen!

[@moniruzzaman8568]

I love you

[@DirtyMike_n_theBoyz]

Purr