Testing Coins with Magnets

A strong neodymium magnet can be used to what probe what types of metals are found in various coins. Example tests on samples of aluminum, iron, nickel, copper, zinc, and silver are conducted. Tests to differentiate between steel, copper, and zinc pennies are also shown. Finally, tests of coins of a variety of compositions are carried out.

[@pauladianehardy8245]

1958! Thanks for the magnetic lesson 🤗

[@jadenephrite]

Regarding 3:14, prior to 1965, United States Mint Quarter Dollars were made from 90% Silver. However, the Coinage Act of 1965 replaced the silver content in coins with a cheaper composition consisting of a copper core sandwiched between an outer layer of cupronickel. Metallurgists at the Battelle Memorial Institute developed this clad composition in order to mimic the magnetic signature of 90% Silver coins. This metallic composition substitution allowed millions of vending machines & parking meters to accept either 90% Silver coins as well as the cupronickel clad copper core sandwich coins.

[@TommyTechnetium]

Nice!

[@SmilaZ]

1958 is my answer.
🙏Thanks for this insightful lesson.

[@davidgreene2094]

It would be neat if someone built a magnet that could magnetize change so he could pick up hundreds of dollars worth of change everyday just driving around 😂

[@ext1nction894]

That actually exists!! On a neat little game called subway surfers

[@lakshminarayana9535]

1958 sir
Because it came up a little more than the other coin

[@ARedMotorcycle]

1958 has more silver.

[@demariobelton2748]

So if a nickel a magnet then what about quarters and dimes

[@shadowphoenixhalo6993]

What kind of magnet is this please respond it’s very important

[@TommyTechnetium]

I used a neodymium magnet

[@shadowphoenixhalo6993]

@@TommyTechnetium yes thank you subscribe to me and in four or so days I will have something very cool with that magnet

[@uls345]

Sir I need one help which chemical applied on copper it will push to iron particles...

[@BBB-ir8nv]

I Have a Lincoln memorial planchette that is magnetic but there is no obverse side?

[@angiquehines2479]

I have a 1944 penny that my magnet does not pick up.. Is that good r bad?

[@askcougarscience1010]

That seems normal to me. It is 1943 pennies that magnets attract

[@angiquehines2479]

@@askcougarscience1010 what exactly should I look for and c if it's worth anything?

[@misskiya]

Why do pennies stick to the center of my forehead?

[@keeganstallard2740]

1958.

[@jonnytrux3697]

? For anyone ? I have a 1955 penny , gold color in a shiny way , & it will lightly with conviction jump up to a 1/2 " round magnet from about a 1/4 " away . It ways 3.11 grams . More than a copper penny . It looks like about a AU or slightly lower grade . Any guesses on this ? Type of metals ? Maybe a jewlryvsfop could tell me ??

[@jonnytrux3697]

Yes , I see I M S weighs ...! LOL

[@reddygarukadapa2993]

Sir when copper reject iron needle please show me one video

[@tienabritt9318]

I have a couple quarters that Straight up stick to a magnet why is that

[@Quickened1]

Probably counterfeit...

[@patriciajenkins6308]

I think 58 is the most silver

[@sfn-life]

The 1958 coin.

[@j.s.2767]

you can increase its magnetism if you drop some vaccine on yet. i learned that from the interwebs

[@TommyTechnetium]

😳😂

[@rosiekey1477]

1958 is 90 % silver

[@lindaclayton8701]

1958

[@juanmanuelmachucarodriquez2865]

1958, my guess it's the sound

[@TommyTechnetium]

Well done!

[@Bradenclaborn-tm5hm]

The 1958 coin

[@ryemsvlog3318]

Wow

[@anitadicus-allen1835]

The 1958 coin

[@chrystalcompton2574]

1958

[@TommyTechnetium]

Well done!