Gravesande Ring and Ball, 19mm Ball Science at Home this 2-pack of 20oz Griffin-shape

this 2-pack of 20oz Griffin-shape borosilicate beakers adds a pouring spout for everyday home use

safely grounding accumulated static charge during high-voltage demonstration work

Aluminum 1-inch diameter pendulum bob at 0

Used in branched circuits where multiple leads share a single terminal

Demonstrates the polarity-sensitive forward-bias behavior of a light-emitting diode on a base with two 4mm terminals

Gravesande Ring and Ball, 19mm Ball Science at Home this 2-pack of 20oz Griffin-shapeFlame heated thermal expansion demonstrator with a 19mm metal ball dropping through a matched ring when cool, no longer fitting once heating expands its diameter.