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.
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
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.
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.
That would be approx 600 feet, if your tether is attached to this latex floater, aka “meteorological balloon for tethered flight.” These are heavier than most weather balloons, which make them perfect for parties and events. Max height is 500-600 feet. Made for filling with helium/hydrogen, and will burst at approx 8-feet dia. Our current stock is red, but don't hate us if you get a white, green or orange. Make a statement with it.
Sounds like a Portuguese percussion album, but it’s just an alnico bar magnet in a mount that lets it rotate freely to demonstrate the three-dimensional magnetic field. Ideal for experiments about forces between magnetic poles, fields around wire and coils, and the properties of fields produced by electric currents. Also handy as part of your ghost-hunting gear.
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.
All you add is sunlight to use this 50-foot long solar balloon to prove that Bernoulli was right. Pascal, too. Demonstrate buoyancy, convection, thermodynamics and the power of the sun. Measures 29" dia and comes with 400 feet of string, and instructions.
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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.