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Laser Pointers |
Inexpensive, lightweight, and compact, these diode lasers are handy for ray optics demonstrations and simple diffraction work, as well as for making your point on overhead images and charts. They are all Class IIIa lasers with an output of about 3mW at a wavelength of 670nm, and they project a sharply focused beam that gives a brilliant, easily visible red spot. Choose the flat credit card-sized Pocket Laser Pointer, which operates on two LR44 watch batteries, or the pen-style pointers, available in silver or black, that use two AAA batteries. All are operated by pushbutton. Batteries are included.
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