Set up for Leslie's Cube Demo
Set up for Leslie's Cube Demo
aluminum disks
aluminum disk
Multimeter (Analog of Digital).

 

Code Number: 4B40.30

Demo Title: Leslie's Cube

Condition: Good

Principle: Radiation of Heat from Different Surfaces

Area of Study: Thermodynamics

Equipment:

Black box with copper side & funnel - (Leslie's Cube), Teapot with water, Gas heater, Grill Lighter, Sensitive thermocouple, Multimeter (Analog of Digital).

Procedure:

Fill the cube with hot water before demonstrating. The painted and unpainted side will give different reading thus showing a black body radiation effect. Be sure to empty the cube afterwards to avoid mineral buildup.  Set the multimeter to the most sensitive DC voltage scale ( 200 micro volts range ). 

The four aluminum disks each have a different front surface finish.  They are, gloss black, matte black, gloss aluminum, and matte aluminum.  Each of the disks has a liquid crystal thermometer attached to the back side.  Set the disks at equal distances from a heat source and monitor the temperature vs. time.

References:

  • Ronald Bryan, "Why Shiny Metals Are Poor Emitters of Radiation", TPT, Vol. 45, # 4, April 2007, p. 222.
  • "Figuring Physics", TPT, Vol. 43, # 1, Jan. 2005, p. 47.
  • "Figuring Physics", TPT,  Vol. 42, # 2, Feb. 2004, p. 118. 
  • George Barnes,  "Jackrabbit Ears and Other Physics Problems",  TPT, Vol. 28, # 3, p. 156, March 1990.
  • Richard A. Bartels,  "Do Darker Objects Really Cool Faster?",  AJP,  244, Vol. 58, No. 3, March 1990.
  • Hf-1:  Freier and Anderson,  A Demonstration Handbook for Physics.
  • Jearl Walker, "4.59, Black Robes and Black Sheep in the Desert", The Flying Circus of Physics Ed. 2, p. 202.
  • 4.5.5:  John H. Moore, Christopher C. Davis, Michael A. Coplan,  "Continuum Sources", Building Scientific Apparatus Second Edition,  p.  196-199.
  • Gerard L' E Turner, "Radiant Energy", Nineteenth-Century Scientific Instruments, p. 119-120.
  • Yaakov Kraftmakher, "1.18, Kirhhoff's Rule", Experiments and Demonstrations in Physics, ISBN 981-256-602-3, p. 68.
  • Tik L. Liem, "Which Coin Will Stay On Longer", Invitations to Science Inquiry - Supplement to 1st and 2nd Ed. p. 82.
  • The Queen Catalogues Vol. II, Catalogue of Physical Instruments, No. 4975, p. 60.
4B40.30 - Leslie's Cube 

 

4B40.30 - Leslie's Cube

 

4B40.30 - Leslie's Cube - PASCO Thermal Cavity & IR Camera