>>>> A pair of AA NiMH rechargeable batteries contains about 5 watt-hours
>>>> of energy, and it is inexpensive and easy to substitute if it fails in
>>>> an emergency. This energy source allows a headlight to have a very
>>>> convenient pocketable shape and size. To reap these benefits, you
>>>> have to accept the energy limitation-- which makes a watt-for-watt
>>>> comparison of LEDs versus other light sources quite relevant. In my
>>>> analysis, quantity of light per watt is the most important measure of
>>>> a bicycle light source.
>> I don't understand what you are getting at by this. White LED is a
>> better quality light source than high-pressure sodium, but it is not
>> categorically more power-efficient. Low-pressure sodium lighting is
>> more efficient yet, and even worse in light quality.
>> To my knowledge, there is no form of high-pressure sodium lighting
>> that can be carried on a bicycle, let alone powered by a pair of AA
>> cells. However much it may excel in terms of lumens per watt, it does
>> not qualify as a bicycle light.
>> Are you suggesting that bicycle lighting should be more pre***ly
>> yellow like street lighting? Note that there are high efficiency,
>> high flux amber LEDs that operate at full power with less than 3 volts
>> to the emitter. I have used amber Luxeon LEDs in combination with a
>> larger number of white Luxeon LEDs for better color rendition in
>> portable sign lighting. I experimented with adding red LED light as
>> well, but it did not help significantly for the signs I was
>> $70 a 25-year unit versus $485 a 15-year unit.
>> As with any fixture, maintenance will still be required for wires,
>> brackets, knockdowns, adjustments, periodic cleaning, animal damage, pole
>> maintenance, and potentially earlier fixture replacement (12 - 15 years)
>> vs. today's replacement cycle of 20-25 years.
>> If you want to be seen by other road users, display a simple and cheap
>> light for safety - any old LED will do although the law has a colour
>> requirement, white front and red rear. If you want to illuminate the
>> environment, whether by headlights or street lights, ya gotta pay. I'm
>> happy for you to spend your
>> money on bicycle lights - don't spend mine on street lights. Which makes
>> a lumen-for-penny comparison of LEDs versus other light sources far more
>> relevant than a watt-for-watt comparison.
>> That's what I'm getting at.
> Not very well.
You can *** off too, one line responses are most uninteresting, three
word responses even more so.
Do not reply to this generic message, it was automatically generated;
you have been kill-filed, either for being boringly stupid, repetitive,
unfunny, ineducable, repeatedly posting politics, religion or off-topic
subjects to a sci. newsgroup, attempting cheapskate free advertising
for profit, because you are a troll, because you responded to George
Hammond the complete fruit cake, simply insane or any combination
or permutation of the aforementioned reasons; any reply will go unread.
Boringly stupid is the most common cause of kill-filing, but because
this message is generic the other reasons have been included. You are
left to decide which is most applicable to you.
There is no appeal, I have despotic power over whom I will electronically
admit into my home and you do not qualify as a reasonable person I would
wish to converse with or even poke fun at. Some weirdoes are not kill-
filed, they amuse me and I retain them for their entertainment value
as I would any chicken with two heads, either one of which enables the
dumb bird to scratch dirt, step back, look down, step forward to the
same spot and repeat the process eternally.
This should not trouble you, many of those plonked find it a blessing
that they are not required to think and can persist in their bigotry
or crackpot theories without challenge.
You have the right to free speech, I have the right not to listen. The
kill-file will be cleared annually with spring cleaning or whenever I
purchase a new computer or hard drive.
I'm fully aware that you may be so stupid as to reply, but the purpose
of this message is to encourage others to kill-file ***wits like you.
I hope you find this explanation is satisfactory but even if you don't,
damnly my frank, I don't give a dear. Have a nice day and *** off.