PIRA 5E50.00 THERMOELECTRICITY

DCS #DEMONSTRATIONREFERENCEABSTRACT
5E50.00Thermoelectricity
5E50.10thermocouplePIRA 200Two iron-copper junctions, one in ice and the other in a flame, are connected to a galvanometer.
5E50.10thermocouple5E50.10Attach a voltmeter to the iron wires of two copper-iron junctions while they are differentially heated.
5E50.10thermocoupleEt-1Two iron-copper junctions, one in ice and the other in a flame, are connected to a galvanometer.
5E50.10thermocoupleDisc 16-20Place a twisted wire thermocouple in a flame and observe the current on a lecture table galvanometer.
5E50.11thermocouplesH-1aHeating two metals causes a deflection on a galvanometer.
5E50.12thermoelectric generatorAJP 29(4),273Review of a commercial thermoelectric generator made from 150 constantan/nickel-molybdenum thermocouples in series.
5E50.15Seebeck effectE-179The thermoelectric effect of copper-iron junctions.
5E50.17Seebeck and Peltier effectsE-181Send current through a copper-iron-copper circuit for several seconds and immediately disconnect and switch to a galvanometer.
5E50.18copper-iron junctions ring30-5.3Sixty copper-iron junctions in series are arrayed in a ring heated simultaneously with a Bunsen burner producing 90 mA.
5E50.19thermoelectric compassE-183Bars of copper and iron are joined to form a case for a compass needle. The needle will indicate the direction of the current as one or the other junction is heated.
5E50.19thermocouple coil magnetE-6a.1Heat a thermocouple loop and the current produces a magnetic field that can be detected by a compass needle.
5E50.20thermoelectric effect in a wireE-184Show that a piece of soft iron wire connected to a galvanometer has little thermoelectric effect until the wire is kinked.
5E50.25Thompson effectE-185A flame moved along a long wire will "push ahead" current.
5E50.30thermoelectric magnetPIRA 500
5E50.30thermoelectric magnet5E50.30Heat one side of a heavy copper loop closed by an unknown metal to generate thermoelectricity for an electromagnet.
5E50.30thermoelectric magnetEt-3A ring of copper shorted by iron forms a thermocouple that powers an electromagnet when one end is in water and the other is heated in a flame.
5E50.30thermoelectric magnetE-182One end of a heavy copper bar bent into a loop and closed with a copper-nickel alloy is heated, the other cooled. An electromagnet made with a soft iron shell can support 200 lbs. Picture.
5E50.30thermocouple magnetH-1bA Bunsen burner heats one side of a thermocouple magnet supporting over 10 Kg.
5E50.30thermoelectric magnetDisc 16-18Heat and cool opposite sides of a large thermocouple. Suspend a large weight from an electromagnet powered by the thermocouple current.
5E50.363M Aztec lampEt-4A thermocouple is built into a kerosene lamp.
5E50.60Peltier effectPIRA 1000
5E50.60thermoelectric coolerEt-2A Peltier device is used to cool a drop of water.
5E50.60thermoelectric heat pumpDisc 16-19Mount aluminum blocks with digital thermometers on either side of a Peltier device. Run the current both ways.
5E50.61Peltier effectE-180Directions for making an antimony-bismuth junction and an apparatus to show heating and cooling.
5E50.62Peltier effect30-5.1Directions for building a Peltier effect device.
5E50.90pyroelectric crystals30-5.2Demonstrate the temperature effect on the polarization of pyroelectric crystals. Picture.
5E50.93domains of electric polarization30-6.6Tiny BaTiO3 crystals are heated on a microscope slide until the domains disappear.

ReferenceDescription
M-1Sutton
Ma-1Freier & Anderson
M-1dHilton
8-2.8Meiners
1A12.01University of Minnesota Handbook
AJP 52(1),85American Journal of Physics
TPT 15(5),300The Physics Teacher
Disc 01-01The Video Encyclopedia of Physics Demonstrations

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