Re: [TCML] Why so loud?

[Mark X2 <susax2@xxxxxxxxx>]

2013/2/8 Jim Lux <jimlux@xxxxxxxxxxxxx>

> On 2/8/13 12:31 PM, Mark X2 wrote:
>
>> Hi Paul,
>>
>> Actually, it isn't the air expanding because of the heat that makes the
>> thunder.
>> The shockwave is caused by the rapidly imploding vacuum that is left
>> behind
>> when the spark disappears.
>> It's comparable to cracking your knuckels or cavitation in a radiator.
>>
>>
> Not really.. that "collapsing vacuum" explanation (which has also been
> used for thunder from lightning) is incorrect (and probably dates from the
> nature abohrs a vacuum days)
>

You've just shattered my whole world Jim, all those years I thought I
knew...
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