#  Conduction, Convection, and Radiation 

 



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### Heat Conduction of Metals

\[M | t+ | —\]   
The ends of four metal rods are placed in boiling water; indicators at the other ends show markedly different heat conduction.

### Convection Cell

\[S/M | t+ | ★★★\]  
A temperature gradient is applied to a two-dimensional cell filled with rheoscopic fluid; beautiful convection currents are observed.  
  
\[[In-Depth Description](/presentations/convection-cell)\]

### Convection Cell (Thymol Blue Cell)

\[— | — | —\]  
See above for description. Demo needs rebuilding.  
  
\[[In-Depth Description](/presentations/convection-cell-thymol-blue-cell)\]

### Black Body Radiation Lamp

\[M | t | ★ \]  
Tungsten filament lamp whose color is temperature dependant in accordance with Planck's radiation law.   
  
\[[In-Depth Description](/presentations/black-body-radiation-lamp)\]

### Black Body Radiation Spectrum

\[L | t+ | —\]  
Prism shows spectrum of 1 kW lantern projector operated with a Variac.

### Black Body Radiation Oven

\[L | t+ | ★★★\]  
Clay and iron objects within a kiln; all radiate with same color when at thermal equilibrium.  
  
\[[In-Depth Description](/presentations/black-body-radiation-oven)\]

### Purcell's Black Body Box

\[M | t | ★★★\]  
Cardboard box black body; interior looks black despite being painted white.  
  
\[[In-Depth Description](/presentations/purcells-black-body-box)\]

### Leslie's Cube

\[M | t+ | —\]  
Cube filled with boiling water; faces have differing surface properties to show how radiation is dependent on surface.

### Radiometer

\[M | t+ | ★★\]  
Detection of IR radiation from hair dryer and/or special IR source.   
  
\[[In-Depth Description](/presentations/radiometer)\]

### Contact Us

**Mailing Address**: Lecture Demonstration Services, Science Center, Rm B-08A, 1 Oxford Street, Cambridge, MA 02138  
**Campus Location**: Science Center B-08A | **Tel**: (617) 495-5824 | **Email**: scidemos-at-fas.harvard.edu