Re: tribophysics

[William Beaty <billb@eskimo.com>]

On Wed, 9 Apr 1997, Ken Fox wrote:

> I found this lately from a colleague. Never heard of it before but it does
> seem to work, even with friction,

Here's another, http://www.eskimo.com/~billb/emotor/statelec.html



When various materials are rubbed together, which becomes positive
and which negative?  Ah, you want the...

TRIBOELECTRIC SERIES


Air *
Human Hands      <----        Most Positive
Asbestos
Rabbit Fur
Glass
Mica
Human Hair
Nylon
Wool
Fur
Lead
Silk
Aluminum
Paper
Cotton           ZERO
Steel
Wood
Amber
Sealing Wax
Hard Rubber
Nickel, Copper
Brass, Silver
Gold, Platinum
Sulfur
Acetate, Rayon
Polyester
Styrene (Styrofoam)
Orlon
Saran
Polyurethane
Polyethylene
Polypropylene
Vinyl (PVC)
Silicon
Teflon         <-----     Most Negative

The above list is from NATURE'S ELECTRICITY, p63
by Charles K Adams  (c)1987 Tab Books, #2769 

* I don't know if I believe that "air" really is in this position.  
  Electrification via airflow usually involves collisions with dust,
  snow, or condensed water suspended in the air. - Bill B.


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