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.
I would also like to know what the 'Watt' used my PC audio system
manufacturers actually is. You see, I have this problem with so-claled
'360W' speaker systems that run from a 12V 1A PSU....
-tony