jayers wrote:
Kevin the answer to your question is in Harold Edgerton's book
"Electronic Flash, Strobe" MIT Press. ISBN 0-262-55014-8
Flash duration is a complex subject it is measurable and is a function
of capacitance and voltage. Voltage and its duration are easily measured
with an oscilloscope.
C'mon, Jonathan...it's only "easy" if you know exactly what you're doing, and you have the equipment available!
To the rest of the great unwashed, it's a subject that ranges from the borderline arcane to the incomprehensible! <g>
keith whaley
T=RC/2 T=time (microseconds) C=capacitance in farads R=E/Imax R=resistance E=initial capacitor voltage Imax=Peak discharge current
To use this formula we would need to know the specification of the flash lamp.
All this and everything you will probably like to know about high speed
light sources, and its application to photography is in this book. This is a complex subject which Edgerton passionately studied, and
developed practical applications. He shared his knowledge with any body
that graced his door, and he has left us a great legacy in his book. Jonathan
-----Original Message-----
From: Kevin Waterson [mailto:[EMAIL PROTECTED] Sent: Saturday, December 11, 2004 4:33 AM
To: [EMAIL PROTECTED]
Subject: flash duration
Is it possible to measure the duration of a flash? Possibly in micorseconds or something?
Kind regards Kevin
