A water drop in electrostatic orbit around a needle in 0𝑔pic.twitter.com/G2x3Ud195K
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What's going on? • The needle has been given an electrostatic charge by rubbing it on silk • Water droplets are placed by the needle w/ velocity v≠ 0 • H₂O has a slight separation of charge (i.e a dipole moment) so it feels the needle's charge
+ Coulomb's law --> orbit4 replies 11 retweets 135 likesShow this thread -
Replying to @InertialObservr
the water drop could have collected some charge too, no? Also, r or 1/r^2 for closed orbit (eg. ellipse), but not being closed is not the same as unstable.
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Replying to @KyleCranmer
Right but per the discussion with
@gravity_levity we know that the potential of dipole induced forces go as 1/r^k k>2 where stability is impossible1 reply 0 retweets 1 like
And I’m not sure about the water drop collecting a net charge int the syringe, but yea I did neglect that
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