From: Michelle.Waddle@newcastle.ac.uk
To: Color and Vision Network <cvnet@lawton.ewind.com>
Subject: Re: lighting for an indoor aviary
Here's a further responce to the flicker problem with fluorescent lighting.
Dr. Endler,
I was facinated to read about the effects that flicker from fluorescent
lighting can have on animals. Just as a side note in case it may become
important to your investigations later, the flicker rate is actually 100 Hz
in the UK and 120 Hz in the US. A pulse of light is emmitted for each surge
of current through the lamp, whether positive or negative.
Dr. Endler and Dr. Waddle,
There may be an alternate way to mitigate the flicker which might be helpful
if there are any cases where the spectrum of fluorescent lamps are ideal. A
fluorescent light fixture could be wired with three-phase power in such a
way that three bulbs flicker out of phase with each other. The total
emitted light would then be flicker free (if there is an equal number of
bulbs on each phase).
Regards,
Dan Hulsey
Cheers
Michelle
This archive was generated by hypermail 2b29 : Fri May 26 2000 - 11:11:07 PDT