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RgrF
He had a classical education and it showed.

PM rather than board post seemed to have been his preferred method of communication. It's been awhile but I usually ended up coming away with a real appreciation of his depth of information and understanding over a pretty wide range of subjects.

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Kraniac
I feel the beginnings of some heartbreak here. Im sort of not sure, GGD, if you feel like you've confirmed his passing for yourself?

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Kraniac

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RgrF
He had a classical education and it showed.

PM rather than board post seemed to have been his preferred method of communication. It's been awhile but I usually ended up coming away with a real appreciation of his depth of information and understanding over a pretty wide range of subjects.

exactly..the guy sort of blew my mind, I had to be on my toes to keep up..found myself actually having to research things before responding...

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eustacetilley

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Buzz
In brief; well, that explains it...
or is it,
that explains it well?

I just didn't want folks to get snookered into buying high K rated LED bulbs for normal use. Unless those puppies are 30 feet up, or higher, in like a gymnasium, they're the opposite of eye candy, they're eye poison.
==

Actually.... True High-K anything is eye poison. As real or fake High-K Lighting pushes above ~5000K, more UV creeps in, and UV is definitely Eye Poison... or is it?
I know a Secret.

Claude Monet in his last years was plagued by Cataracts; he nearly gave up painting. Then he had Cataract Surgery, in which the Lens and Cornea were removed, and he had to wear spectacles to see anything at all, and what he saw was... spectacular.



In Chichu, Japan, they built a Museum just around this one piece, a huge 2x6 meter work that Monet could only see a handful at a time, while painting. But he did paint what he saw, and this was the most revolutionary painting of the 20th Century. Monet was already celebrated for inventing Impressionism...
In having the Cataracts, Lens, and Cornea of his eye removed, Monet was now seeing possibly as low as 350nm, well into the UV-A range, and he painted his Impression of it as that soft Pink-Gray glow just to the left of center, the UV radiation of the Sun, that his naive spectacles couldn't focus. The Lens and Cornea are naturally UV protective of the Retina, even the UV that is basically harmless. Monet was the first, and I think the last, nobody has repeated this, to see and paint UV. This disturbed him though; he had Yellow-Green spectacles made up that filtered the UV out again. Anyway, removing the Lens and Cornea for non-medical reasons such as Art would be considered unethical. (Art? Art who?)
I see UV.
Actually, I trained myself to see it; we used Deuterium UV Lamps to "Ozone Scrub" Ultra High Vacuum bits free of Hydrocarbons. We were warned not to look at the lamps; we could damage our eyes by what we couldn't see... except I could see it, once I looked for it, as a sort of soft Pink-Gray glow. (The UV that I still couldn't see is what causes the damage... and the Ozone Scrubbing.)

You can buy little 365nm UV LEDs now that carry all sorts of warnings; they are no more harmful than a Blue LED of the same Flux, that is Photons per square area. Lumens, Lux, Candlepower... those are all rubbish, since they are Human Perception based, and we know how screwed up their Vision is...
The better of these UV LEDs filter out everything above 400nm, but if you prefer not to screw around with them, you need a Quartz Prism, and repeat what Newton did. Shine a Sunbeam into a dark room and through the Prism, and look at the Spectrum on a white wall, mark on the wall the boundaries below Red and beyond Violet that you can discern, and then photograph it.
Whatever you can see beyond Violet, and the Camera can't, is Ultra-Violet. You need a Quartz Prism because regular Glass attenuates UV. Camera Lenses such as the Takumar Quartz series are designed specifically to work in the UV range, and historically have been horrifically expensive. Making them is quite difficult, and the demand is low.

¬Eustace™

(The Takumar Lenses were named for Takuma Hajiwara, son of the Last Samurai, Envoy and Ambassador for the Japanese Emperor, Society Photographer, Inventor... and Spy.)

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¬Eustace™
I've never owned, shot, or even handled a Gun, yet I am a Shootist, and I am writing a book about it called TAOS: The Art Of Shootistry.

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Dennis S
I would usually feel guilty that my replies weren't worthy of his post and have to do lots of research just to keep from sounding like a damn fool. Many times I would be totally overwhelmed and just say, "Thank you for that."

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eustacetilley

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Bo

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eustacetilley
I'm still around.
Things fall apart; the centerboard cannot hold.
Parts are on order from Beneteau.

BTW, do you ever hang around Rooster's Roadhouse?
Big Band Night on Wednesdays; Rock and Punk the rest of the time.

¬Eustace

Turning and turning in the widening gyre...

Haven't thought of that one in a long time! Had to memorize it for AP English in high school...gotta say I'm a bit rusty!

Oooh! Oooh! I forgot to comment on this bit:

I'm firmly convinced that the Enemy of English Literature is the High School English Lit Teacher.
W. B. Yeats may be the Bane of AP students everywhere, but our Family connection was with his brother Jack.
Jack Butler Yeats.

He was a Mentor of my Father, along with Samuel Beckett, when Dad was in the Abbey Theatre. Dad was written into one of Jack's plays- The part of the Lawyer in "In Sand".
There was a small painting that Jack gave to Dad, when Dad decided to pursue Marine Insurance instead of the Stage.
It was of a Tinker, pausing wearily by the side of the road.

Although I went into Physics, our Family was primarily Artistic, with occasional forays into Government and/or Treason.
There is one Family phrase that made its way into Physics, in reference to planned new Experiments with no funding in sight:
"The parts of which we have not got."

¬Eustace