Blow up this big, 8-foot long x 2-foot dia, solar balloon on a sunny day and then sit there, maybe enjoying a refreshing beverage, and watch while the sun heats up the black surface and the air inside expands and becomes lighter than the surrounding atmosphere and the whole thing rises like your hopes for a bright future. Includes a 20-foot cord to keep it in check. Works best on a cool but bright day. Don't we all.
August 21, 2017. Be ready for the American eclipse, a total eclipse of the sun visible from sea to shining sea just when school is starting. This 32pp booklet is written by astrophysicist Fred Espenak. Full of fascinating facts and time charts for cities across North America, plus a map of the eclipse’s path. Includes a pair of cardboard-frame solar viewing glasses.
Nice little teaching magnet set for the primary grade classroom has (6) magnets in star, two-bar, horseshoe and ring shapes, all plastic coated in silver and red to mark the poles. Range in size from 1” to 3”, and include a few paper clips and small nails for demo purposes.
They might as well learn something while they're trying to outlast you
on eating those lima beans. Set the table with educational placemats and
they'll be at least a touch smarter after dinner, even if their
vegetable intake is low. These laminated, 12" x 17-3/8" mats have
full-color fronts, black-and-white backs. Choose the United States Map,
Stars & Constellations, the Periodic Table of Elements or The Metric
If the question is whether to tie a bunch of these giant latex professional weather balloons to a lawn chair, the answer is no. (They burst at about 82,000 feet anyway.) Besides, this is a true weather balloon, with plenty of fun, nonfatal uses. The cream-colored latex balloon is approx 40" dia when flaccid, you should pardon the expression, but has an 8-foot dia when inflated. The neck is 9" long x 1" dia. Scientists, meteorologists, inventors, teachers and the imaginative filmmaker are warned to launch the balloon carefully. The material is delicate and not made to survive brushes with pavement, pine branches, or clumsy physics students.
An easy way to light up the kids' eyes!
Teach them to wire a simple circuit with our basic components.The knife switches are mounted on a plastic bases. The miniature plastic socket holds a standard flashlight bulb with a 14 mm dia screw base. We pack 6 volt and 3 volt round bulbs, or 1.5 volt bell-shaped bulbs, (5) to a
package.(Bulbs are rated slightly higher to prevent them from burning
out.) Hook up the black plastic and metal 2" x 4-1/4" telegraph key
with brass contacts and (2) terminal posts with nuts.
Our blue-plastic holder for (1) "D" battery has a small tab at each end to hook a lead
to, and a 1/8" square mounting hole at each corner. You add the mounting surface and the know-how. Actual bulb voltage listed in parenthesis.
You can start with our single aluminum
tuning fork, 2-tined and 7-1/2" long. It vibrates at 256 hz, and is
labeled "C". Or you can order the set that has (8) forks and a mallet
with a rubber-tipped plastic head. The forks are labeled low-C to high-C
and come in a fitted, latched wooden box. Unfortunately, C.J., who has
perfect pitch, tells us that his pitch is more perfect than most of the
tuning forks. He also says you can file the tips, tuning them to an
electronic keyboard until they're perfect - and we think there's a
certain cachet to telling people you tuned the forks yourself. But they
are perfect, if you're using them for things like teaching principles of
sound or driving the chihuahua crazy.
Put the world on a desktop with these 4" dia swivel-and-tilt globes. You pick from: the topographic globe with country borders and names or the antique-style political globe that shows current countries but in earth tones without topographic details. Both have vertical and horizontal axes and stand on a 3-inch base. Made in Germany.
Classroom and Science Fair alert: Now you can order an 8-pack of metals and metal alloys for demonstration purposes. Each pack of 1" dia x 1/32" thick discs includes aluminum, bronze, brass, copper, n/silver (w/nickel), m/steel (mild: low carbon), stainless steel, and zinc. Composition of each is stamped on one side of the discs.
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Or View Our Latest Printed Catalog Online
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...
Unlike Any Place On Earth
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.