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Radiometer

Another oldie but goodie. 5" high evacuated clear glass stand 3" in diameter at the top. A four bladed vane is balanced on a needle inside the sphere. Because opposite surfaces of the vanes are black and white, incident radiant energy is absorbed or reflected to a different degree. The result is a spinning vane. The brighter the light, the faster it spins. Simple, but compelling. Brief explanatory instruction sheet included.

3817P1 RADIOMETER
$10.95 EACH
3817P2 RADIOMETER 2 PACK SAVINGS
$19.95 PKG(2)

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Computer Revolt

Tired of being beholden to the computer mega-corporations? Get back to basics with the original computer. This fine wood abacus is approximately 9-3/4" x 4-3/4", with (13) sets of (5) balls and (13) sets of (2). Computing speed is considerably slower than even an old 286, but then it's guaranteed to never need rebooting. Instructions included. Made in China, naturally.

91132 ABACUS
$8.95 EACH

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Endless Time

More fun for the easily amused! A very stylish 3-1/2" x 5-1/4" clear acrylic panel, less that 1/2" thick has two flattened hourglass chambers within it. Both have non-toxic fluids and suspended in one are black grains that are heavier than the liquid. In the other are colored grains that are lighter. Flip the works from one black plastic end to the other and the grains slowly do their things, black down, colored up, over maybe a five minute period. Very soothing. We'll pick your color from neon red, orange, chartreuse and magenta.

91377 DBLE SAND TIMER
$9.95 EACH

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Perpetual Motion

Warning!  WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.

Spin this spindle and watch it turn in perpetuity!! Well, for a long time anyway. Inside the 5-1/2" long colored plastic spindle are magnets which are repelled by magnets in the 5" x 3" black plastic base. The variously colored spindle floats in the air above the base thus virtually free of normal friction. It also has red lights to light up its way as it spins, giving it almost a strobing effect. Nifty desk toy named "Revolution".

91664 LIGHTED REVOLUTION
$15.00 EACH

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Swinging Balls

The classic swinging balls, to amuse you on slow days in the office or physics lab, and to demonstrate Newton's Third Law. Drop one of the five hanging balls, one flies out from the other end; drop two and two fly out; drop three and it's amazing. The balls are set in a 7" x 9" x 9" high wooden frame. Isaac didn't invent these mesmerizing toys, by the way. That took Simon Prebble (whom some of you may remember as the evil Martin Chedwyn on "As the World Turns") who had an energy transference inspiration in 1967. (Where else can one learn these things?)

33739 WOOD FRAME BALLS
$24.95 EACH

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Mirage Maker

Warning!  WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.

Absolutely incredible device! The MirageĀ®, a precision optical instrument, creates three-dimensional images of objects of your choice where there is nothing. Drop pennies, keys or similar small objects (your sister won't fit) into the 2-3/8" dia opening of this 9" dia x 3" high flying-saucer-shaped disc, and a perfect image of the object will appear floating above it. The image is so real friends will try to grasp it, but their fingers will close on thin air! Use it as a high-tech centerpiece with a flower as the object! A booklet (included) explains the magic. New coating provides protection for the mirror surfaces. Highly recommended. Made in the USA.

88375 MIRAGE
$37.95 EACH
 

Lost Your Panic Button?

Do we have to say it? Yes, we do. DON'T PANIC! We have more. Regulation ASCII-sized red panic buttons with white lettering, ready to self-stick to a spare spot on your keyboard or anywhere else where you regularly lose control.

92937 PANIC BUTTON
$1.75 EACH

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Front!

Warning!  WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.

Time was, these service bells were on every teacher's desk and the front desk of every hotel in the world. They're still a classically beautiful design, and they'll still bring folks running when you tap the little plunger on top. The chrome bell sits on a black enameled steel base and the whole thing is 2-3/4" dia x 1-7/8" tall.

93213 DESK BELL
$4.95 EACH

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Moving Sand Art

Black and white sand in a viscous colored fluid. The sand and fluid are between 5-1/2" wide x 3-1/2" high panes of glass, framed on a gimbaled stand. Flip the panel and watch the sand swirl and eddy into endlessly new pictures of dunes, drifts, mountains or moonscapes, depending on your imagination and the pattern they form. The mix of black and white creates a definite third dimension to the images. Pretty neat, as these things go.

88881 MOVING SAND PICTURE
$5.95 EACH

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Food-Free Fish

With nicely flowing lines and big fins, these glass fish have all the charm of real tropical fish without the constant nagging for food flakes. They'll stand up alone outside the tank, or happily sit at the bottom of the aquarium. Assorted color highlights, about 4" long x 2-1/2" tall, with substantial tails.

38911 GLASS FISH
$2.75 EACH
 

A Glass Menagerie

"Hold him over the light, he loves the light! You see how the light shines through him?" Now you, like Laura, can have your own collection of cut-glass critters. We'll pick (1) from our menagerie of lovely little faceted crystalline beasties to send you. Our choice of (2) different, from the approx 2" tall squirrel, bear cub, swan, snail, elephant and other cuties. If the swan happens to have been de-winged during shipping, get some glue or call us for a fresh swan.

38910 GLASS CRITTERS
$3.95 PKG(2)
 
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