Isn't it comforting to know that the rules makers for science competitions are so aware of scientific principles?
----- Original Message -----
From: Jim Fackert
To: Indoor_Construction_at_yahoogroups.com
Sent: Saturday, September 22, 2007 8:52 AM
Subject: Re: [Indoor_Construction] Re: 2008 SO Rules
Ah, the requisite ambiguous rule. Every SO event has to have one.
Balsa isn't opaque, no plastic is opaque in thin sheets. A brick is
opaque, metal is opaque. Opaque means "allows NO (zero, nada, zipo, not
a single photon of) light to pass.
The best choice I can think of is aluminum foil. Not metalized mylar.
You can watch a solar eclipse through that.
Jim Howell wrote:
>
>
> Anyone got any initial thoughts about the 08 SO "twist" requirement? It
> seems to me that if they really wanted to enforce the "opaque"
> requirement, it would eliminate Esaki as a covering and require painting
> the covering material. So, Design Floral spray onto the film?
[Non-text portions of this message have been removed]
Received on Sat Sep 22 2007 - 09:10:02 CEST
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:45 CET