Walterk
Enlightened
what are you really trying to figure out here?
Peak beam intensity expressed in candlepower.
Or distance in meters at which Lux-meter reads 1,0.
(Of modern-day lens-based high and low beam headlights, the average and the top-range, may it be xenon or HID. )
That is not an accurate ballpark figure for beam peak intensities, no.
I don't know how and what this is measured and do not understand the meaning of the tables in your link to halogen lights from 2004. All I see is there is more variation than I thought there would be. I don't think I am that far off.
I assume you understand the article you referred to, can't you just give me 'more accurate' figures?
Else prove I am wrong with explicit information to make things not more complicated then they are.
Thanx
Edit FYI:
NYS Vehicle & Traffic Law Excerpts Quote: 'No lamp shall be used on a motor vehicle having a light source greater than thirty-two candle power, unless such lamp is approved by the commissioner as provided by this section.' (Note: peak of 50kcd is permitted)
This limit to 35.000 candlepower was already the limit in 1976 according this article in Populair Science 1976 . At the same time in Europe car headlights on high where limited to 110.000 candlepower each.
From 1913 up to 1930 the maximum was 21kcd, but new cars with suitable fittings where allowed to use 32kcd for headlights. Here is told in 1983 the maximum for high beams was lifted to 150.000cd.
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