Diffraction Apparatus, Used to map light intensity versus position for many-slit geometries, Slits are made by depositing metal film on glass, creating extraordinarily clean slits with fully opaque blocking areas.
Geometry Resource Kit, includes: double sided geoboards(12) with rubberbands, one overhead geoboard, shape tracer set, pattern blocks, over head pattern blocks, tangrams (16 puzzles), overhead tangrams, a Tangramables book, a Let's Pattern Block It book and geoboard dot papers
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