Rectangular Refraction Acrylic Block, 100 x 75 x 18mm Subcategory_Microscope Slides bridging the reach gap between

bridging the reach gap between the standard 500mm and the long-haul 1000mm plug-to-plug patch wires

measuring period under different loads to isolate mass from weight

Carefully lagged nickel-plated copper 3 by 2-inch inner cup inside a 4 by 2

each 20mm on edge with a top hook for suspending in water during Archimedes-principle and buoyancy experiments

87-inch focal length

Rectangular Refraction Acrylic Block, 100 x 75 x 18mm Subcategory_Microscope Slides bridging the reach gap betweenPairs 100 by 75mm with 18mm thickness on an acrylic rectangular refraction block, the wider working face giving longer beam paths for clear refraction angle measurements.