Lens, double convex, 300mm f/l

All our lenses and circular mirrors are 38 mm in diameter. The focal length (f/l) is noted for each.

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All our lenses and circular mirrors are 38 mm in diameter. The focal length (f/l) is noted for each.

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This kit contains over 40 of the harder-to-find items for the experiments in the R.E.A.L. Science Odyssey Level 1 Earth & Environment course.

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Use 200 µL pipette tips with fixed or variable volume micropipettes ranging from 10 µL to 200 µL in volume. These Gilson-style pipette tips have a smooth gradual taper for even liquid dispensing and snug fit on the micropipette.

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This tuning fork resonates at a set pitch when tapped.

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This steel hooked weight is painted with black enamel and is accurate to +/- 1%.

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This extra long slinky measures 7.5 cm in diameter, extends to 9 meters & compresses down to 10 cm. Watch it walk downstairs and use it to study longitudinal & transverse waves! See more product details below.

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This percussion hammer is 8" long with a hard rubber head permanently joined to the chrome plated handle.

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This large 5" diameter ring is designed to support beakers, flasks, etc. on a ring stand. See true inner and outer dimensions below.

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