Re: [TCML] How temperature effects the tesla coil...

[Jon Danniken <danniken@xxxxx>]

On 01/04/2013 02:17 PM, Jim Lux wrote:

> 
> The temperature will affect the resistance of the windings, but the
> change over a temperature range near room temp won't be all that big.
> 
> The temperature will also affect the density of the air/gas surrounding
> the coil, which will (very slightly) affect the permittivity and will
> also change the breakdown voltage (in proportion to absolute
> temperature, at least where Ideal Gas Law holds).

Speaking of gasses, it might be fun to build an enclosure for the coil,
and calculate the volume of air inside of the enclusure (this would, of
course, entail calculation of the volume of the tesla coil).

The experimenter would then operate the coil a few times to get an
average for spark length to a grounded electrode, then vary the
composition of the air inside of the enclosure by adding in a volume of
a different gas, like argon, and recording the average spark length at
varying concentrations of the added gas.

This would require the added expense of a gas bottle and metering
regulators, and, of course, the enclosure.

Jon
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