Description

holding volume constant across specimens for isolated density comparisons

Zinc-plated rectangular steel bar-magnet pair packaged with keepers that bridge the poles in storage

Combining filtration and titration on one base

an Erlenmeyer flask

Removable full-term fetus in a 16

Standard Ray Box for Optics Material_Hardwood holding volume constant across specimensDesigned to project narrow beams through interchangeable slit plates, this ray box gives students a controllable light source for reflection, refraction, and ray tracing demos.

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Standard Ray Box for Optics Material_Hardwood holding volume constant across specimens

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