Only 3 problems with front surface mirrors - expensive, hard to get, and =
I don't think Archimedes had any.


I don=E2=80=99t think he had any second surface mirrors.

-----Unmodified Original Message-----
Only 3 problems with front surface mirrors - expensive, hard to get, and =
I don't think Archimedes had any.

Tony.

(flat front surface mirrors are used in kaleidoscopes, if anyone was wond=
ering)


> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu]On Behalf
> Of David Van Horn
> Sent: Tuesday, 25 October 2005 6:19 AM
> To: Microcontroller discussion list - Public.
> Subject: RE: [OT]: 127 1 sq. ft. mirrors set a wooden boat on fire
>=20
>=20
>=20
> First surface mirrors would have worked a lot better.
>=20
> Window glass passes near IR, but not far IR. So, those glass tiles
> wouldn't have delivered nearly what a polished sheet of metal would.
>=20
>=20
>=20
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