This classroom-quality laser ray box can be used in a wide variety of general optics experiments and demonstrations involving glass or acrylic prisms, lenses, or mirrors. The box emits 3 red beams, each of which can be switched on or off independently of the others; you can also configure the beams into parallel, convergent, or divergent orientations. The unit takes 3xAA batteries, not included.
See the constellations visible in the Northern Hemisphere on this watch!
NEW 2016 DESIGN! This hip red tee features Pi to 1000 decimal places on an ultra soft 100% cotton shirt.
Discover how solar cells make electricity with this awesome kit!
Infiniview comes with a 3.5" LCD screen and rechargeable Lithium Ion battery that will last up to 2 hours in the field.
This genuine meteorite is great for the rock collector in your family!
This mirascope creates a 3D hologram image!