Uploaded March 2012 | Updated September 2026, 2 weeks ago
This video consists of a description of a laser based camera trigger mechanism for use with a high speed shadowgraph. A spinning mirror with a slot in it is used to create a short pulse of light. Part of the mirror is covered with a black disk. When the laser reflects off of the mirror the resistance of a photocell is reduced which allows a relay to activate which triggers the camera. When the laser impinges on the black disk the resistance of the circuit is increased to much for the relay to activate.
More information at: firesciencetools.com
Example of vane anemometer.
Disclaimer: Combustion experiments are dangerous and could result in injury to yourself or others, and/or damage to property. These experiments were conducted in a laboratory environment by trained personnel. Do not attempt these experiments without proper training, equipment, and laboratory. Do not attempt at home. These videos are meant to show the combustion phenomenon and are not intended as a guide for reproducing the effects. Do not play with fire or combustion phenomena.
This video consists of a description of a laser based camera trigger mechanism for use with a high speed shadowgraph. A spinning mirror with a slot in it is used to create a short pulse of light. Part of the mirror is covered with a black disk. When the laser reflects off of the mirror the resistance of a photocell is reduced which allows a relay to activate which triggers the camera. When the laser impinges on the black disk the resistance of the circuit is increased to much for the relay to activate.
More information at: firesciencetools.com
Example of vane anemometer.
Disclaimer: Combustion experiments are dangerous and could result in injury to yourself or others, and/or damage to property. These experiments were conducted in a laboratory environment by trained personnel. Do not attempt these experiments without proper training, equipment, and laboratory. Do not attempt at home. These videos are meant to show the combustion phenomenon and are not intended as a guide for reproducing the effects. Do not play with fire or combustion phenomena.
