Light the Match.
4B40.10 • C+65+2
Parabolic mirrors: Light bulb ignites a match. Two metal parabolic mirrors are exactly aligned facing each other, about a meter apart. A 500W bulb is set at the focus of one mirror and a match at the other. As the variac is turned up, the match will begin to smoke, and in about 30 seconds, burst into flames. RADIATION
Related Demos
C+65+0 Concave mirrors focus candle flame on thermopile across bench. C+65+5 Computer demo: Kirchhoff's radiation law, runs 15 min. C+65+10 Large transformer heats metal strip with chalk marks on it. C+65+15 Crooke's radiometer with flashlight, arc lamp or IR source. C+65+20 Box with white interior appears black from hole in the side. C+65+25 FLIR T200 Infrared camera C+65+30 Blackbody color change as temperature increases C+65+30 Applet: The Greenhouse Effect C+65+35 Applet: Radiating Charge C+65+40 Applet: Blackbody Spectrum C+65+45 Applet: Synchrotron Radiation C+65+50 Applet: Blackbody Radiation C+65+55 Applet: Plank Radiation Formula C+65+60 Applet: Electrodynamics Simulation C+65+65 Applet: Antenna Simulation