Probably all correct. The main danger was the noise, which for a big
transmitter was deafining and sometimes the gaps were buried undergroun
[no problem with long leads at 15 kHz]. Must have been a fantastic
sight when someone keyed one of this transmitters!
Ed
mddeming@xxxxxxx wrote:
>The Toxic effects of many substances were unknown back in the 'good old days of spark transmitters', and where ir-t was known, it was "unmanly" to worry or complain about such things. Reporting health problems most likely got you fired.
>
>Matt D
>
>
>
>
>-----Original Message-----
>From: Ed Phillips <evp@xxxxxxxxxxx>
>To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
>Sent: Fri, Nov 22, 2013 9:42 pm
>Subject: Re: [TCML] DC Coil progress.
>
>
>In the 'good old days of spark transmitters' it was common for rotor or
>even the rotor and stationary electrodes of the rotary gap to be made
>of cast zinc and I don't remember reading of any health problems or any
>precautions. Besides, you get a nice blue spark.
>
>Ed
>
>Futuret wrote:
>
>
>
>>I've heard that vaporized zinc (from the galvanizing) is
>>extremely toxic. Whenever I've tried using brass
>>electrodes they eroded away very quickly. I've had
>>much better results with copper electrodes. Others
>>may have had different results, but I thought I'd
>>mention it.
>>
>>
>
>
>
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