Re: pyramiding

Posted by Bill on July 31, 2000 at 19:23:50:

In Reply to: Re: pyramiding posted by Eric T. on July 30, 2000 at 13:38:19:

Eric,
If as an example, you cut two pieces of tin foil off a roll. You cut one 12" x 12" and lay it flat. The other you cut 12" x 20" and you fold triangular peaks in it, like an accordian, enough so that the tin foil still fits within a 12" x 12" box. Piece number 1 has 144 in sq of surface area (surface exposed to the outside or in other terms, surface that you can physically touch). Piece number 2 has 240 in sq of surface area. It's why the heatsinks on your computer chips have fins. Much more surface area within a given set of linear parameters (the size of the chip) to help them cool faster.

Bill

: :I don't think that pyramiding increases the surface area of the shell. I think instead that a *normal* smooth shell has more surface area. But I'm still thinking this through, maybe I'll realize that I'm wrong, and then change my opinion accordingly.
: -Eric-

Follow Ups:

• Re: pyramiding Eric T. 08/01/00 (2)
  • Re: pyramiding Bill 08/01/00 (1)
    • Re: pyramiding Eric T. 08/01/00 (0)
• Eric, excellent analogy. n/p EJ 07/31/00 (1)
  • CORRECTION. Bill n/p EJ 07/31/00 (0)

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: Eric, : If as an example, you cut two pieces of tin foil off a roll. You cut one 12" x 12" and lay it flat. The other you cut 12" x 20" and you fold triangular peaks in it, like an accordian, enough so that the tin foil still fits within a 12" x 12" box. Piece number 1 has 144 in sq of surface area (surface exposed to the outside or in other terms, surface that you can physically touch). Piece number 2 has 240 in sq of surface area. It's why the heatsinks on your computer chips have fins. Much more surface area within a given set of linear parameters (the size of the chip) to help them cool faster. : Bill : : :I don't think that pyramiding increases the surface area of the shell. I think instead that a *normal* smooth shell has more surface area. But I'm still thinking this through, maybe I'll realize that I'm wrong, and then change my opinion accordingly. : : -Eric-

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