Description

Five-centimeter brass sphere mounted on an ebonite-insulated metal base

disc commutator

Used to spin the Newton disc into a perceived white via persistence of vision

this decade resistance box substitutes for fixed resistors in circuit experiments

Sequential germination stages of a maize kernel expose coleoptile emergence

3D Life History of Angiosperms Model, 24 x 18 x 2" Glassware_Glass Sets & Apparatus Five-centimeter brass sphere mounted onMagnified angiosperm life cycle model traces pollination, fertilization, seed development, and germination through a complete hand painted sequence on a mounted base.

Exchange/Return Notes

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3D Life History of Angiosperms Model, 24 x 18 x 2" Glassware_Glass Sets & Apparatus Five-centimeter brass sphere mounted on

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