Two 38 mm spherical lenses; one is a double concave, the other a double convex, each with a focal length of 150mm. When placed together the net focal length is zero. (1-1/2" x 1-1/2" x 1/4"; .005Ib).
Great for optics experiments in the lab or classroom.
Ever wonder how to survive in the wilderness? These cards can help!
This project book and sample kit introduces you to shape-memory alloy technology!
This kit includes several different projects that demonstrate the power of magnets!
The large realistic model has removable organs that can be studied and set back into the correct position.
Illuminate both your room and your mind with this ingenious Periodic Table Lamp.
This classic device is used to demonstrate the conservation of mechanical energy.
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