Description
the 90-45-45-degree geometry serving as a precision turning element for total internal reflection and beam-redirection in introductory optics
and commutator assemblies for direct observation of each component
laboratories
Three-part life-size digestive tract model with a removable stomach half exposes esophagus
Hand-Crank Centrifuge, 4 Tubes Subject_Physical Science the 90-45-45-degree geometry serving asHand cranked for field use and low cost classrooms, this die cast single speed centrifuge spins four 15 mL tubes for basic demonstrations of centrifugal separation.
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