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8
votes
2answers
2k views

Tying knots in power cables to prevent power surge from lightning strikes

There are plenty of references to this claim on the internet that tying knots in power cables will prevent a piece of equipment e.g. television or computer from a power surge. How can this be ...
4
votes
1answer
37 views

Why does lightning generate multiple branches?

Everyone have seen how lightning occurs. But then I realized that lightning never occurs in straight lines but it follows branching. Why is that so ? Why can't lightning goes in straight line rather ...
2
votes
0answers
15 views

Lightning Conductor Working

During a thunderstorm charges collect on clouds until a field which is more than the air's dielectric strength is created. Because now there is a potential difference between the ground (0 Volts) and ...
2
votes
0answers
48 views

Layman explanation and demonstration of positive lightning

Inspired by the thunderstorm overhead, and after reading the question and answers Voltage and current of positive lightning - what is an effective means to explain this phenomenon to a layman? Also, ...
0
votes
0answers
38 views

Does lightning have a thickness?

We have calculated (probably measured) the speed, temperature and voltage of lightning so does lightning have a thickness? Note: When a lightning occur it heats up the air rapidly causing the air to ...
0
votes
0answers
26 views

Does a lightning strike have a physical weight?

A lot seems to be unknown about lightning and it is possibly a source of dark energy at the instance of the strike. So if we were to place say a 10kg lightning rod (earthed) on a set of insulated ...