Subscribe
 


Sensor, Detectector, Data Logger, Monitor and Measuring Instrument schematics

Google
Electronics Infoline Web





Chronograph

Chronograph

The chronograph works in the normal way, by timing how long it takes a projectile to break two infrared beams spaced 3 inches apart in the tube. The spacing is critical as any offset will result in a measurement error. The minimum measurable projectile speed is approximately 38.1 ft/sec.

http://www.geocities.com/pest3125/chrono/chrono.htm