Robin van Spaandonk wrote:

> In reply to  Harry Veeder's message of Thu, 22 Feb 2007 02:57:25 -0500:
> Hi,
> [snip]
>>> The wire creates a positive cloud. The tube attached to the negative
>>> terminal
>>> is
>>> negative, and hence attracts the positive air cloud. This pulls the tube up,
>>> and
>>> the cloud down. When the positive cloud comes in contact with the tube, it
>>> is
>>> neutralized, but the power source soon creates more positive ions around the
>>> wire, and concurrently pumps more electrons into the tube.
>> 
>> Wouldn't this make the tube noticeably oscillate up and down?
> 
> No, because there is a continuous stream of air and current.

Michel Jullian wrote:
> 
> The tube doesn't oscillate because the process Robin described is continuous.

For this to be plausible the tube could never be neutral. In fact, if the
tube's charge were to fall below some minimum value the tube's weight will
cause it to drop.

Harry 

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