Recent content by wiyosaya

  1. W

    Help Determining the Minimum Thickness of a Vacuum Chamber Lid

    I suggest doing a search on vacuum bagging. You might just accomplish this with a thin membrane over the surface of your wood. Over a bathtub like this, I doubt that you will find a piece of plastic thick enough at a reasonable price. You might also investigate using this -...
  2. W

    Pressure between a membrane and a solid body

    I would like to understand this a bit better, so I am looking for a reference to refer to and not necessarily an explanation in a reply. I have a non-porous membrane of a compressible material wrapped around a solid body. I then draw out the air between the membrane and the solid body. I want...
  3. W

    Can a point view another point around an obstructing point?

    Thanks for the suggestion. I'll have to give that a try to see if it works. I looked at Delaunay Triangulation, however, there are complications that are a result of the default way that openGL renders its triangles. If I were interested only in the distance between points, Delaunay would work...
  4. W

    Can a point view another point around an obstructing point?

    I am not sure that this is the correct forum for this question. I have multiple sets of 3, 3D (x, y, z) points in space. They are fixed points in space, and I cannot move them. Each point is weighted with a pressure value. I need to be able to determine if point 1 can view point 3 given that...
  5. W

    Effect of ambient light on eyes when watching television

    This is addressed in at least one of the home theater display calibration discs - Digital Video Essentials HD Basics - http://www.sceniclabs.com/products/digital-video-essentials-hd-basics Others, like the Disney disc, may also address it; however, I have no experience with any of the others. I...
  6. W

    Descendant of Genghis Khan sequenced

    Of course. Assuming there is validity in the DNA test, his papers will supersede said DNA test. :wink: 1 in 200 men direct descendants of Genghis Khan For another "opinion."
  7. W

    Quesitons on Gas firing a lab furnace

    I am in the process of building a small furnace aimed at technical ceramics work, and I would like to use a carbon crucible. The carbon crucible's limit temperature is ~ 430 C in an oxidizing atmosphere and ~ 2800 C in a neutral atmosphere. My plans are to have the furnace vent to atmosphere so...
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