P
Paul Ciszek
- Jan 1, 1970
- 0
I need to produce fake sunlight over a small area--maybe a square 20cm
on a side--on a low budget. I have been told that ELH projector bulbs
make a good first approximation to sunlight on the cheap. I am trying
to make an estimate of how many of them I need to achieve sunlight
intesnsity. I tried to work it out based on the following numbers:
Sunlight = 100,000 lumens/m^2
Halogen bulbs yield 16 to 24 lumens/W
That's 6250 to 4167 W to produce 1m^2 of sunlight
250 to 167 W to illuminate my 20cm square
That just seems awfully low; am I missing something?
on a side--on a low budget. I have been told that ELH projector bulbs
make a good first approximation to sunlight on the cheap. I am trying
to make an estimate of how many of them I need to achieve sunlight
intesnsity. I tried to work it out based on the following numbers:
Sunlight = 100,000 lumens/m^2
Halogen bulbs yield 16 to 24 lumens/W
That's 6250 to 4167 W to produce 1m^2 of sunlight
250 to 167 W to illuminate my 20cm square
That just seems awfully low; am I missing something?