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A Pyramid of Prisms
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 diffracting light to produce a nice rainbow-like spectrum, but are definitely not up to instrumentation standards. The missing dimension, length, is shown below.
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31801 PRISM, 2" | |
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31798 PRISM, 4" | |
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31799 PRISM, 6" |
Egg McChameleon
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
Another gem plucked from the A.S.&S. mirabilia. The shape and size of a hen egg, this opaque stone (or matte-finished glass - we're not sure which) is interesting in itself. Touched with a red penlight in a dark room, the entire egg becomes a brilliant ruby color. Blue light/blue egg, etc. Fun and fascinating, and with a little sleight of hand, a sure way to convince the plebeians that you have some mysterious metaphysical power.
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91901 MAGIC STONE EGG |
Muffin Bonanza
Our special Little-Fans-R-Us offering. All these muffin fans are square and all have mounting holes at the corners. "Com" = Comair-Rotron. "Mech" = Mechatronics, Inc., Aav is Aavid Thermalloy. All are UL. For more information including manufacturer part number and quantity discounts, please contact customer service.
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39126 MUFFIN FAN | 12 VDC | 2-3/4" x 1" | Details | |
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40605 MUFFIN FAN | 12 VDC | 3-5/8" x 1" | Details | |
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40606 MUFFIN FAN | 12 VDC | 3-1/8" x 1-1/2" | Details | |
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40607 MUFFIN FAN | 12 VDC | 50mm x 10mm | Details | |
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40608 MUFFIN FAN | 12 VDC | 2-3/8" x 13/16" | Details |
Porro Abbey Prisms
Porro Abbes are small glass prisms used extensively by Uncle Sam as image-erecting systems in small optical instruments of the World War II era. They look like two small right angle prisms cemented together, but are actually made from one piece of glass. Ours have entrance faces about 5/16" square, giving them an overall length of 11/16". In final use, porro abbes would have received two facefuls of silver or aluminum to enhance reflectivity from key surfaces, but ours are plain. . . and they do have small edge chips which your fussy Uncle found offensive, and which you will barely notice in your rapture over porro abbes. Enough history. The pure bubble-free optical glass renders these prisms optical jewels suitable for window sills, earrings, and general spectral fascination. No passport needed.
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2611 PORRO ABBEY PRISMS |
Really Wheely
Just imagine what you could do with this nifty pair of 3-volt motors (our each is a set of 2). The motors, each of which draws 700 mA and spins at 1,000 rpm, are in white-plastic housings 2-1/2" thick x 2-7/8" dia OA, and are connected by a 15" wire harness with a battery contact and a high/low/off switch. Peeking out from each housing and driven by each motor is a soft, black-rubber wheel 3/8" wide x 3/4" thick x 2-1/2" dia. Think toy race track, and spin out from there!
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35298 3V MOTORS, PAIR |
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