sometimes I fell like Ben, given a 50-50 chance I always get it wrong.
Bill
________________________________________
From: Amps [amps-bounces@contesting.com] on behalf of Roger (K8RI)
[k8ri@rogerhalstead.com]
Sent: Wednesday, August 28, 2013 5:56 PM
To: amps@contesting.com
Subject: Re: [Amps] Electron HOLE flow
On 8/28/2013 2:05 PM, Mike Waters wrote:
> Absolutely it is an illusion. IIRC, that was erroneously introduced into
> textbooks around 1970 the same time as the "electricity flows from positive
> to negative" nonsense. Whoever came up with the latter never heard of
> electron flow in a vacuum tube, among other things.
You are quite right. The vacuum tube hadn't been invented yet when + to
- (conventional current) was defined although you're a bit off on the
date. EEs have used conventional current since there have been EEs and
it was defined by Ben Franklin.
73
Roger (K8RI)
>
> 73, Mike
> www.w0btu.com
>
> On Wed, 28 Aug 2013 03:54:29 -0400, K8RI wrote:
>>
>>> They still refer to "hole flow" in introductory semiconductors.
>>
>> REPLY:
>>
>> "Hole flow" is an illusion, much like the moving lights on a theater
>> marquee. If it helps to understand things fine, but holes don't move. It's
>> more accurate to say a hole is created in one atom and disappears in
>> another. For a brief time while the electron is in motion, there are
>> actually two holes. Neither one "moves".
>>
>> 73, Bill W6WRT
>>
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>
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