Zone melting purification is standard in the semiconductor industry since
the 1940s when it was developed at Bell Laboratories, enabling the
development of the transistor. After standard purification of the silicon or
germanium bole, zone melting provides the final step of purification before
a
In reply to David Jonsson's message of Mon, 4 Oct 2010 18:49:04 +0200:
Hi,
[snip]
Zone melting is a technique to separate impurities in a material.
http://en.wikipedia.org/wiki/Zone_melting
There is no public theory on the purification effect of zone melting. It is
an empirical subject.
Mike Carrell mi...@medleas.com wrote:
Zone melting purification is standard in the semiconductor industry since
the 1940’s when it was developed at Bell Laboratories, enabling the
development of the transistor. . . .
It was secretly developed after hours, against the explicit orders of
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