Bimetallic strip: Brass/invar strip curves when heated.
4A30.10 • C+70+35
Bimetallic strip: Brass/invar strip curves when heated. Invar is a steel-like alloy of nickel and iron containing 36% nickel. It is employed in the manufacture of precision instruments because of its low coefficient of expansion. The bimetallic strip is brass on one side, bonded to Invar on the other side. The strip is straight at room temperature, and curves when heated. TEMPERATURE AND EXPANSION.
Usage
Fall 2012 - Spring 2026
50
reservations across 6
classes
Related Demos
4A30.11 Bimetallic switch: Change in temperature lights cold/hot lamps. 4A30.21 Ring and ball: Ball fits through ring only after ring is heated. 4A30.30 Heated steel rod expands, raises pointer,breaks pin on cooling. 4A30.60 Heated horizontal nichrome wire stretches, weight sags. 4A30.61 Heated iron wire stretches, rotates pointer.
C+70+0 Galileo's air thermometer forces liquid down when heated. C+70+5 Heated iron wire stretches, rotates pointer. C+70+6 Heated horizontal nichrome wire stretches, weight sags. C+70+10 Heated steel rod expands, raises pointer,breaks pin on cooling. C+70+15 Ring and ball: Ball fits through ring only after ring is heated. C+70+20 Ice bomb: Iron sphere ruptured by freezing water. C+70+22 Heating a rubber band: negative coefficient of thermal expansion C+70+25 Cubic coefficient of expansion: Dissectable wooden cube. C+70+30 Steam gun: Friction heated water in tube shoots a cork. C+70+32 LN2 in a model cannon shoots a cork. C+70+40 Bimetallic switch: Change in temperature lights cold/hot lamps. C+70+45 Franklin's pulse glass: Two glass bulbs and tube containing ether. C+70+47 Dippy bird: Large glass bird containing ether oscillates. C+70+50 Piston and cylinder compress/expand air measuring temp. and pressure. C+70+55 Fire syringe: paper is ignited in a cylinder with a piston. C+70+60 CO2 fire extinguisher: Expanding gas freezes into snow. C+70+65 Cooling by expansion: Jar with water compressed with air. C+70+70 Hot water geyser, runs 5-10 min. C+70+75 Boyle's Law: At constant T, Pressure times Volume is a constant. C+70+80 Gay-Lussac's Law: At constant V, Pressure is proportional to Temperature. C+70+85 Charles' Law: At constant P, Volume is proportional to Temperature. C+70+90 Grain Silo explosion: A cloud of power is ignited and blows lid off of can.