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imreolajossr t1_j8j987j wrote

Reply to comment by HomicidalTeddybear in How does rubbing or hitting two metal objects together create radio waves? by hondata001

Hi, I am the owner of those videos and a new member of this forum. I will analize it more. It is strange effeck and works with any metal around the radio. So I think it is not the coating doing this effect.Looks like it is not static electricity effet, The time is too short in between sparks to get it re-charged.

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hatsune_aru t1_j8qgjmj wrote

the bottom drill bit is rolling around in the velvet, that's likely picking up charge.

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