16 Feb
2014
16 Feb
'14
11:20 a.m.
On Sat, 15 Feb 2014, Philip Belben wrote:
[*] The footcandle is not, as you might expect, a
candle (=candela)
times a foot, but a the luminous flux from one candela at one foot
distance. And I have difficulty enough with lighting units even before
I encounter complications like that!
SO, what is a Watt "Equivalent"? (used instead of wattage for peddling
CFLs) It claims to mean that the bulb producses light "equivalent" to an
incandescent of that wattage, but it seems to be noticeably low.