Gig 601XL Builder wrote:
Jerry Wass wrote:
Why does the diameter of the reflector have so much effect on the
output-(candlepower)--of bulbs having the same power input?? i.e.
#4509-PAR-36 4.45"Ø 110,000cp
#4537-PAR-46 5.70"Ø 200,000cp


The reflecting area is larger. 15.55 in^2 compared to 25.51 in^2


#4559-PAR-64 8.1"Ø= 600,000cp-(with 600 watts input)
would this equate to 100,000cp- (with 100 watts input)?--
Yet it's area is 51.5 1n²--or nearly 3.31 times as big as the 4509.