High Quality Gratings Yield Bright, Clear SpectraThese gratings deliver more light into the diffraction patterns than conventional gratings, making them easier to use, and ideal for introductory work. They are also available with the exceptionally high dispersion of 1000 lines/mm, and with a double axis ruling that yields fascinating visual effects. Choose the convenient 2″ x 2″ slide format, or the economical 6″ x 12″ sheets, which can be easily cut into smaller squares for individual student sets, or used intact to project a brilliant class-sized spectrum with an overhead projector. Sets of 15.
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