7-Metal Density Cubes Set, 20mm (Brass, Lead, Iron, Copper, Aluminum, Zinc, Tin) Entomology & Zoology_Zoology Charts & Models the Alnico composition resisting demagnetization

the Alnico composition resisting demagnetization for repeatable field-mapping experiments

this large earthworm dissection model reveals segmentation

Demonstrates electromagnetic induction and Faraday's law by stepping DC input into 25mm high-voltage sparks across adjustable electrode rods on an open chassis

Thirteen-piece mix of nine steel and four brass precision weights from 1 gram to 1 kilogram

7-Metal Density Cubes Set, 20mm (Brass, Lead, Iron, Copper, Aluminum, Zinc, Tin) Entomology & Zoology_Zoology Charts & Models the Alnico composition resisting demagnetizationSeven metal 20mm density cube set with element stamped brass, lead, iron, copper, aluminum, zinc, and tin specimens in a snap top case for comparative mass volume calculations.