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Be(prism)am
Nice little cubic beamsplitter prism. (Get it?) 12 x 11 x 10mm, it's painted black on (3) sides. Low transmission-about 70/30 or 80/20-but it'll be fine for classroom demos, experimentation, or perhaps souping up your fancy laser device.
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42819 BEAM SPLITTER PRISM |
DCX Lens
This nice handful of plastic lenses is just the ticket for a primary-school teacher who needs unbreakable samples, and who wouldn't mind having a few interesting pieces left for craft projects. Each DCX lens is 20mm dia, 34.5mm focal length. Not individually wrapped, so a few may have small surface scratches.
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68093 PLASTIC LENS |
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