Hand-Painted 3D Starfish Sectional Anatomical Model on Base, 18 x 16 inch Light & Optics_Spectroscopy Used to produce concentric Newton's

Used to produce concentric Newton's rings under monochromatic light

81-piece physics mechanics kit covers comprehensive laboratory investigations through force analysis

Copper-block plug key switch with two 4mm terminals and a removable plastic-guarded plug

with both 4mm stackable sockets and screw terminals so leads wire in without an adapter to either bench standard

Used to determine irregular-object volumes by water displacement

Hand-Painted 3D Starfish Sectional Anatomical Model on Base, 18 x 16 inch Light & Optics_Spectroscopy Used to produce concentric Newton'sThree dimensional starfish sectional model reveals echinoderm anatomy, water vascular system, and radial symmetry for marine biology teaching.