Copper and Iron Compound Bar for Thermal Expansion Material_Glass the thinnest gauge for mounting

the thinnest gauge for mounting the smallest and most delicate insect specimens in permanent displays

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

Illustrates liquid-density changes with temperature using a weighted 75mm hollow copper sphere that floats in 15°C water and sinks as the water warms to 30°C

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

Glass-tube-housed NTC thermistor at 4

Copper and Iron Compound Bar for Thermal Expansion Material_Glass the thinnest gauge for mountingRiveted compound bar of copper and iron strips at 200 by 15mm, flexing under heat as each metal expands at a different rate, the working principle behind bimetallic thermostats.