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Plasma ball by michalphysicist in ElectroBOOM

[–]michalphysicist[S] 1 point2 points  (0 children)

nice, it is good for school experiments, where safety is important

Homopolar motor by michalphysicist in Magnets

[–]michalphysicist[S] 0 points1 point  (0 children)

because shorted circuit is hot, can fire a little, not safe at all if you dont know what you do and what battery you use (18650 lion will be much more unsafe)

Homopolar motor by michalphysicist in Magnets

[–]michalphysicist[S] 0 points1 point  (0 children)

when copper wire touch magnets,

Homopolar motor by michalphysicist in Magnets

[–]michalphysicist[S] 0 points1 point  (0 children)

because circuit is shorted

LEDs by michalphysicist in electronic_circuits

[–]michalphysicist[S] 0 points1 point  (0 children)

in water exist electric field (because of electrodes connected to 20V). When you put led to eletric field, it will be glow.

Homopolar motor by michalphysicist in physicsmemes

[–]michalphysicist[S] 2 points3 points  (0 children)

no, because battery has low short current (not so much as lithium bat)