The only way to "refresh" the old pictures which have been made inaccessible by the policy change at PhotoBucket would be for the original poster to retrieve the pics, post them on another hosting site, and have a Moderator edit the original posts to point to the new URLs.
The next best thing...
My venerable M20 Warrior started having intermittent problems after four years of EDC. The twist to change light levels became erratic and sometimes I had to bang the light to get it to turn on.
After thoroughly checking tail cap, etc. I disassembled the front assembly and found the reflector...
I do not think I have seen a conclusive answer from the OP whether what they really want is violet (single narrow wavelength range) or purple (mix of two widely separated wavelengths). They are distinctly different in subjective effect.
The Wavien deals with light at the right frequency that is going in the wrong direction. The subject of the article deals with photons (light) which is going in the right direction but is wasting energy outside the visible range (mostly infrared).
It effectively reduces energy loss from the...
One of the main ingredients in the CLR products is phosphoric acid. Safer than what is in the drain cleaner but slower.
For stainless steel surface discoloration oxalic acid as found in Barkeepers Friend works very nicely.
Chances are the manufacturers are
1. Looking only at battery models with more than one source, and
2. Looking for lowest cost per watt with good lifetime and charging characteristics that match their pack chargers.
Which would mean that except for the charger question you can use what you...
FWIW, half wave rectification, such as running the diodes off straight AC without reversing half of them, will give you a 60Hz flicker. Other techniques like full wave without filtering will give you 120Hz instead and a lower contrast ratio. That can make a big difference all by itself.
Vitamin K is an antidote to warfarin based (anticoagulant) poisons, not strychnine based poisons.
The reason for using anticoagulant poisons is that the delayed reaction keeps the vermin from recognizing what poisoned them.
I always thought it was a patent violation if you used it for economic gain even if you did not sell it. The damages based on lost revenue, should it come to a lawsuit, would be miniscule, but a violation nevertheless.
Unlike copyright, I do not think that there is a fair use provision in patent...