These 5-5/8" wide cardboard solar eclipse viewing glasses filter out 99.999 percent of visible light, and 100 percent of harmful UV and IR light, which means they’re safe for direct solar viewing (and your sunglasses aren’t). A sharp, orange image of the sun will always be there because the lenses are scratch-resistant. You get (2) pairs because who wants to watch an eclipse alone? For you techie types who care, they’re rated for transmission under EN1836:2005 and AS/NZS 1338:1992. ISO 12312-2:2015.
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.
Forget that the 6-3/4" long body is festooned with Latin phrases and old maps. The stones/beads/glass inside the tube would make designing windows in cathedrals a snap. And hey, that's good work if you can get it. A nice gift for Rosetta window fans, and a must for that special bishop in your life.
A pair of shades in assorted colors with the outer portion of each lens half silvered on the eyeball side. Glance left or right and see behind you. Cool undercover item for the younger sleuth or the dirty old man on the beach who doesn't want to be discovered. Whatever your motive, you need a pair now.
The praxinoscope was the successor to the zoetrope, and both precursed (darn!) motion pictures. This praxinoscope, marketed as the Crystal Animator", can be assembled in 10 minutes. The finished scope is 4" dia x approx 2-1/2" tall with a 10" long spinner/handle. Spin it and watch the horse appear to gallop in the mirrored core. Comes with (18) pre-printed strips--including the horse, people, pigs and many more--but you can create your own, which is twice the fun, on the reverse sides.
Rattlebacks are plastic semi-elliptical shapes, 3-7/8" long, that illustrate Newton's laws of motion, while mystifying kids. Set them down (the rattlebacks, not the kids) and their offset center of gravity makes them spin. Spin them in one direction and they stop and reverse themselves. You get a package of (10) in blue, along with a lesson plan and suggested activities.
They'll call you rainbow fingers when you have this pack of (4) LEDs attached to elastic rings with 3" long fiber optic bundles on the front. You get (1) LED/bundle for each finger--red, white,blue and green--and the fiber optics are removable. CJ, our Senior VP for Jazz Instrumentation, says you just might be able to use these as brushes on a snare drum with enough amplification, and the audience would love it. Irreplaceable batteries included. Order (2) sets, because you have (8) fingers.
From Sun Catcher®, a transparent prismatic sheet, roughly 4-1/4" x 5-1/4", inside an oval frame, roughly 10-3/4" x 8-1/4" with a variety of motifs. We'll pick (1) of (3) diffraction patterns inside (1) of (6) heavy cardboard frames: undersea critters, fairyland, jungle life, a wizard, dolphins or a garden with butterflies and a hummingbird. It will "transform light into an explosion of multiple hues," and who doesn't like that? Comes with a suction cup to mount in your window, and if you're a minimalist you could cut the cool prism out of its frame and we wouldn't tell a soul.
This 4-3/4" dia moon is so much more interesting than the real thing. This one has a 4-way dimmer, flash/strobe/fast and slow fade/steady-on modes, plus internal LEDs to make (15) colors in addition to traditional moonish white. It's also a great nightlight. Remote control comes with a battery but you'll need (3) "AAA" batteries to run the moon. Topographical, but the giant astronaut footprint suggests it's not quite to scale. Will sit up by itself or wall mount on a couple of finishing nails.
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