Fiber Optic Demonstration System Pack Size_14 US-milled iron filings at 40-60

US-milled iron filings at 40-60 mesh in a 250-gram translucent screw-cap bottle

this magnified animal cell model reveals organelle ultrastructure and cellular organization for advanced biology instruction

producing water jets of varying distances to show how pressure increases with depth in hydrostatics

converting solar radiation to measurable thermal energy on an 18-inch-tall stand

Molded in one piece with sleeve-bearing wheels

Fiber Optic Demonstration System Pack Size_14 US-milled iron filings at 40-60Transmitter and receiver pair on PP3 batteries with 5m and 10m polymer fiber coils, supporting variable audio modulation 1Hz 1kHz plus a 250kHz square wave for speed of light measurement work.