Liquid Level Apparatus on Wooden Base, 8.5 x 5.5" Subcategory_Electricity and Circuits letting students plot resonance against

letting students plot resonance against length and back-calculate the speed of sound

transmitting maximum light when their axes align and nearly extinguishing it when crossed at 90 degrees

Hinged-cover pocket compass with a 45mm dial graduated in degrees and a needle lock

and 50mm wheel diameters in open-sided frames

and specific gravity experiments

Liquid Level Apparatus on Wooden Base, 8.5 x 5.5" Subcategory_Electricity and Circuits letting students plot resonance againstVisualizes that liquid seeks its own level regardless of container shape through interconnected vessels on an 8. 5 inch wooden base with a detachable design for easy draining.