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Sunrise/Sunset simulation


  1. [Q] Sunrise/set simulator ?
    by (George Booth) (5 Dec 1994)

[Q] Sunrise/set simulator ?

by (George Booth)
Date: 5 Dec 1994
Newsgroup: rec.aquaria

Here is an elaborate concept for a sunrise/set simulator, as well has
high noon, brief thunderstorm, 747 passing overhead and an occasional 
flock of geese. 

Most hoods have 20/30/40 w fluorescents running lengthwise.  How about 
taking a slew of those cute 9w Osram bulbs and lining them up across 
the hood? Sort of like (labeled for further discussion):

          |  |  |  |  |  |  |  |  |  |  |
          |  |  |  |  |  |  |  |  |  |  |

          A  B  C  D  E  F  G  H  I  J  K
color     a  r  d  r  d  d  d  r  d  r  a

They are available in various color spectrums, from Actinic to daylight. 
I would arrange the bulbs with actinic (A,K) on the far ends, a reddish 
spectrum (BDHJ) next and daylight (CEFGI) in the middle.  Each bulb would 
have its own timer (hey, they're cheap at WalMart). 

In the morning, K would come on first (since it is in the east).  The
actinic would simulate the dull light when the sun first peaks over the 
horizon.  Next, J then H would come on and K would go out, giving you
the early morning red light.  The daylight bulbs would then cycle on
on (east to west), with all 5 on at noon.  DFH would go out for an hour 
or so at 2 pm and then come back on at 3 or 4 after the thunderstorm was
over.  At this time, the morning red bulbs would go out and the afternoon 
red bulbs (D, B) would come on. The daylight bulbs would then cycle off 
going eat to west, the night actinic would come on, the afternoon red 
bulbs would cycle off, then total darkness and the frogs start croaking. 

Thanks to James Cho for inspiring this concept. 

George Booth                         "Nothing in the world is more dangerous             than sincere ignorance and conscientious 
Freshwater Plant Tank Technology     stupidity" - Martin Luther King, Jr. 

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