PIRA 6B40.00 BLACKBODIES

DCS #DEMONSTRATIONREFERENCEABSTRACT
6B40.00Blackbodies
6B40.10variac and light bulbPIRA 200Vary the voltage to a 1 KW light bulb with a variac to show color change with temperature.
6B40.10variac and light bulb6B40.10Vary the voltage to a 1 KW light bulb with a variac to show color change with temperature.
6B40.10variac and light bulbL-99Vary the voltage across a clear glass lamp from zero to 50% overvoltage. Also measure the intensity and plot against power.
6B40.20hole in a boxPIRA 500
6B40.20hole in a box6B40.20Holes in black boxes are blacker than the boxes. One box is painted white inside.
6B40.20hole in a black boxHf-2A box painted black has a hole in the side.
6B40.20Bichsel boxesDisc 24-25Two black boxes have blacker appearing holes in them. One box actually is painted white inside.
6B40.25carbon blockPIRA 1000
6B40.25carbon block6B40.25A carbon block with a hole bored in it is heated red hot with a torch. The hole glows brighter.
6B40.25hole in a hot ball38-5.5A iron ball with a hole is heated red hot.
6B40.26carbon rodPIRA 1000
6B40.26carbon rod6B40.26Bore a hole in an old carbon arc rod and heat electrically. The hole glows brighter.
6B40.30radiation from a black bodyHf-3Heat red hot a carbon block the has both a drilled hole and a white porcelain plug.
6B40.30carbon block and porcelain38-5.4Two holes are drilled in a carbon block, one is filled with a porcelain insulator, and the block is heated with a torch.
6B40.30graphite and porcelainH-158Graphite and porcelain heated red hot look the same. A pattern on a porcelain dish shows brighter when heated.
6B40.35good absorbers - good radiatorsL-97An electric element (E-171) with chalk marks or china with a pattern are heated until they glow.
6B40.40X-Y spectrum recorderPIRA 1000
6B40.40X-Y spectrum recorder6B40.40The black body radiation curve is traced on a X-Y recorder from a thermopile. detector riding on the pen arm.
6B40.41IR spectrum on galvanometerPIRA 1000
6B40.41plotting the spectrum38-5.11Measure the output of a thermopile. as it is moved across a spectrum. Monochrometer in appendix, p. 1362, Plots.
6B40.41radiation intensity curveL-98Explore the energy distribution of the continuous spectrum of a carbon arc with a sensitive thermopile. and galvanometer.
6B40.41infrared in spectrumDisc 23-22Hold a thermopile. connected to a galvanometer in different parts of a spectrum.
6B40.42mapping the spectrumL-112Use a thermopile. and galvanometer to show the infrared energy in the continuous spectrum. Insert a water cell.
6B40.45IR camera and projected spectrumPIRA 1000
6B40.50IR camera and soldering ironPIRA 1000
6B40.55project sprectrum and change temperaturePIRA 1000
6B40.55radiation vs. temperature38-5.13A more detailed look at varying the temperature of a black body and measuring with a thermopile.
6B40.55radiation spectrum of a hot objectDisc 24-18Project the spectrum from a projector lamp and change the voltage.
6B40.62Stefan-Boltzman equation38-5.12Measuring sigma by the relative method using a Hefner lamp as a standard radiator.
6B40.70microwave blackbodyAJP 43(11),1004Microwave radiation emitted or absorbed by a cavity is detected and displayed on an oscilloscope.

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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