Simple Machines Wheel and Axle Model Class_Class B this enhanced optical bench set

this enhanced optical bench set ships with a lamp housing and a matched complement of optical components

Life-size kidney model separates into two hemispheres exposing cortex

the shared mass isolating volume and density as the distinguishing variables across metals and polymers

this Brownlee-pattern apparatus gives a clean visual proof of the 2:1 stoichiometry of water decomposition

Simple Machines Wheel and Axle Model Class_Class B this enhanced optical bench setWooden wheel and axle simple machine model on a 9. 5x3. 375 inch base, demonstrating how a crane lifts loads through the mechanical advantage of a large wheel turning a small axle.