All Questions
3
questions
15
votes
3
answers
7k
views
Tree vs lightning rod: why does one burn and the other not?
I have this simple question, but I cannot find the answer.
I saw this video about a plane getting hit by lightning. In it, Captain Joe explains why people do not get electrocuted. This has a simple ...
- 314
60
votes
6
answers
46k
views
If water is not a good conductor, why are we advised to avoid water near electricity (no wet hands near circuits etc.)?
How can water be a medium to conduct current while its ionisation is so negligible that, in principle, no current should flow?
- 737
1
vote
0
answers
54
views
Do electrons move easier depending on the way a TIG tungsten head is grinded?
I'm in a TIG welding course, and during the course we (inevitably) messed up a few (suicidal) tungsten heads by grazing/suicide dive into the molten puddle during operation. Standard procedure is to ...
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