There's optical science and high school physics, and then there's making pretty colors with this little 4-1/2" x about 1" acrylic prism. It makes the same rainbows that the beveled edges on the glass in the French doors to your grandmother's living room used to make on the floor in the afternoon while she was making supper. If you had a grandmother with French doors with beveled glass, who made you supper. If not, you'd better buy this prism or you won't have anything to remember after she's gone.
Polished glass equilateral prisms.
Equilateral because each edge of the end is the same length, 32mm. Thus,
as all you geometry students know, each of the angles is also the same,
60 degrees. These are school grade and are fine for decorative and
demonstration. They do a nice job of refracting light to produce a nice
rainbow-like spectrum, but are definitely not up to instrumentation
standards. The missing dimension, length, is shown below.
Optical grade unsilvered glass prism from Uncle's WWII tank periscopes.
This one is 2-1/8" on the hypotenuse, 5-3/4" long, and 1-1/2" on each
leg. They may come with small non-interfering chips or surface
scratches. Great for classroom experiments or for art projects. These
are a true surplus find and they will not last forever so get yours
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Our web site always contains everything we have available for sale outside our retail stores. Typically, new items are listed on the site before they get published in our catalog...
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In addition to this fabulous on-line catalog of incredible stuff, American Science & Surplus has three great retail locations. If you're in the neighborhood, please stop by! Store hours may vary. Feel free to call for store hours and directions.