Copper and Iron Compound Bar for Thermal Expansion Material_Glass 5mm copper wire on a

5mm copper wire on a 5 x 4

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

Designed to make electric field lines visible

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

and concentrated oxidizer monitoring in water-treatment workflows

Copper and Iron Compound Bar for Thermal Expansion Material_Glass 5mm copper wire on aRiveted 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.