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2) Why cannot a hammer and chisel that can exert a force of say, 100
Newtons be used to prise an electron away from the nucleus of a copperatom
in a copper bar given that the radius of an atom is of the order ofand
10-10meters and the electric force of attraction between a proton and
an electron
that are this far apart is a *mere 2.3 x 10**-8 **Newtons** ?* (Electric
Magnetic Interactions by Sherwood and Chabay)How do you know it can't be done?
How sure are you?
Hint: triboelectricity (aka "static electricity"). There's lots
of that this time of year (in northern temperate regions).
One suggestion made by a machine tool designer is that the area over which
the sharp chisel transmits the force maybe considered to be "several" atoms
across and the stress is calculated as force / area. The stress is therefore
much smaller and this probablycannot be sufficient enough to prise the
electron.
And yet, I feel John Denker maybe right and I will need to look into the
triboelectricity aspect.
Thanks
Sridhar
On Wed, Dec 17, 2008 at 11:46 PM, Bernard Cleyet <
bernardcleyet@redshift.com> wrote:
"Radioactivity is an "earthly" occurrence. Electron capture (i.e.
inverse beta-decay of a neutron) is readily observable. It is
the merger of an electron into a nucleus." [JD]
That's why it's called "K capture" and not l, etc. . [referring to JU]
bc thinks, referring to what I think is sr's original thought,
electron colliders have been doing this for years.
On 2008, Dec 17, , at 08:19, Jack Uretsky wrote:
1. I don't think that yuu are reading the "simplified explanation"
carefully. "Does not merge with" is not the same as "keeps away
from".
As a matter-of-fact the s-orbitals of hydrogen, for example, spend a
fraction of teir time inside the nucleus.
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Thanks
Sridhar Chitta