Question for Jeff Foster and Dave Kommel

[Toby Lang]

Originally Posted by SSDiv6

Toby, the flash intensity can be adjusted in much of the professional equipment used at the races.
Many electronic flash systems have a capacitor that can generate several hundred volts and the energy is measured by Watts-Second.
Again, if by coincidence the flash is on the line-of-sight, it can trigger the photocell or infrared.

Do you have a link or a demonstration to back this up? An infrared sensor should only respond to infrared light. It shouldn't matter how many volts or watt-seconds the light is. The wavelength of visible light is different than IR light.

I agree that a camera flash could trigger a photocell, but not an IR sensor.