Continuous Spectrum
[M/L | t+ | ★★★]
Spectrum production using prism and carbon arc or slide projector.
[In-Depth Description]
Spectrum Recombination
[M/L | t+ | —]
A second prism recombines the colors to produce white light; alternatively, colors may be recombined in a glass globe.
Complementary Spectrum
[L | t+ | —]
A complementary (opaque) slit produces the the complementary colors of the regular spectrum.
[In-Depth Description]
Ultra-Violet Radiation
[M/L | t+ | —]
Carbon arc with quartz optics and fluoroscopic screen.
Radiometer
[M | t+ | ★★]
Detection of IR radiation from hair dryer and/or special IR source.
[In-Depth Description]
Infra-Red Radiation
[M/L | t++ | —]
Carbon arc with six thermometers or radiometer positioned through spectrum.
Infra-Red Projector
[M | t+ | ★★]
Lantern projector with IR transmission filter and heat sensitive liquid crystal screen.
[In-Depth Description]
Infra-Red Beam
[M | t+ | —]
Electric heater with parabolic mirror; a second parabolic mirror focuses IR beam (with flash paper detection).
LWIR Camera
[ S|t| ★★★★ ]
See how objects of different temperature emit different intensities of infra-red radiation.
Land's Retinex Theory Experiment
[L | t++ | ★★★★]
The experiment addresses questions like "Does color inhere in the world, or in the eye?" It is a re-creation of Edwin Land's retinex theory experiment.
Gray Scale Perception
[M | t+ | —]
A demonstration of eye/brain logic in the perception of gray scales across boundaries using rotating disks and/or cylinders.
Monochromatic Illumination
[L | t+ | —]
Students are asked to guess the colors of various objects illuminated by monochromatic light from a carbon arc spectrum.
Color That Isn't There
[S/M | t+ | —]
Subjective colors appear when observing rapidly alternating patterns of black and white on a spinning disk.
Color Mixing
[L | t+ | ★★]
Additive color mixing with three slide projectors and filters.
[In-Depth Description]
TV Color Perception
[L | t++ | ★★★★]
RGB additive color mixing shown by magnified phosphor dots of video monitor.
[In-Depth Description]
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