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Re: Air Temp/Humidity and Spark Length
From: Thornton, Russ #CSR2000[SMTP:ThorntoR-at-rc.pafb.af.mil]
Sent: Monday, November 24, 1997 3:16 PM
To: 'Tesla discussion Group'
Subject: RE: Air Temp/Humidity and Spark Length
Malcolm,
Can you give some details on your E.S. meter? Sounds interesting.
Russ Thornton
CSR 2040,
Building 989, Rm. A1-N20
Phone: (407) 494-6430
Email: thorntor-at-rc.pafb.af.mil
>----------
>From: Tesla List[SMTP:tesla-at-pupman-dot-com]
>Sent: Friday, November 21, 1997 11:01 PM
>To: 'Tesla List'
>Subject: Re: Air Temp/Humidity and Spark Length
>
>
>From: Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
>Sent: Friday, November 21, 1997 6:51 PM
>To: Tesla List
>Subject: Re: Air Temp/Humidity and Spark Length
>
>I too have found that dry air is particularly good for longest sparks.
>A great test for best conditions is to check how much static you can
>generate by dragging your feet in insulated soles on a carpet. I set
>up an e.s. voltmeter here at work in one room. We also use it to
>demonstrate the hazards of using carpets in computer rooms, workshops
>where e.s. sensitive components are worked on etc. It gave the
>computer service group here something of a "shock" when they realized
>the qualities of the carpet in their room.......
>
>Malcolm
>
>> From: Antonio Carlos M. de Queiroz[SMTP:acmq-at-compuland-dot-com.br]
>> Sent: Thursday, November 20, 1997 11:08 PM
>> To: Tesla List
>> Subject: Re: Air Temp/Humidity and Spark Length
>>
>> Hi,
>>
>> Humidity certainly affects the formation of sparks. I have more
>> experience with electrostatic generators, and what I observe is
>> that loooong sparks can only be obtained in very dry air. With
>> humid air, apparently the charges escape more easily to the air,
>> and even if the generator is carefully dried with hot air, what is
>> obtained instead of long sparks is only a bluish glow at the
>> high-voltage terminals.
>> In the case mentioned, the exposition to humid air
>> can explain the bad results outdoors. Reducing the size of the
>> terminal may have increased the strength of the electrical field
>> around the toroid, causing a spark, even at lower voltage.
>> Or simply the air humidity decreased at that time.
>>
>> --
>> Antonio Carlos M. de Queiroz
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