Two 50 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.
Great for optics experiments in the lab or classroom.
Age:
13 +
Approx. Ship Size:
1.75 x 1.75 x 0.50 inches
4.45cm x 4.45cm x 1.27cm
Weight:
0 lb 1 oz
0.01 kg
Customer Reviews
Great item to teach optics
Alan Feingold from Atlanta, GA
I bought these to teach optics but I was impressed myself by how well they work.