What are the grades of Optical Glass?

[macfred]

I've never heard anything like that before! What organization?

I guess it's about the WUO (Weather Underground Organisation) and the San Francisco Police Department Park Station bombing (February 16, 1970) ... ??

 

[Alan Gales]

I guess it's about the WUO (Weather Underground Organisation) and the San Francisco Police Department Park Station bombing (February 16, 1970) ... ??

Hmmmm. It's possible. Janis died in October of 1970 so she was still living when that bomb went off. She was pretty messed up on drugs during that time. People do stupid things when on drugs. The Vietnam war was wrong for so many reasons but bombing banks and government buildings was not the answer.

 

[DREW WILEY]

They were into rifle assassinations, bombs, etc. Hoover not only knew about it, but tried to inflame it, make it worse, in order to elicit a strong public reaction against the antiwar movement. Some of his own people were involved the whole time. He was a political manipulator, and his strategy worked in the short run, not the long run. A few of the most vocal proverbial"outside agitators" behind the riots were actually FBI plants. People died. I saw a lot of that stuff with my own eyes. The Weather Underground was even more dangerous, and modeled after the Italian Red Guard. The FBI didn't touch them until they hatched a viable plot to steal a nuke in another state. Then they raised bogus criminal charges against the people involved so the nature of the real intended crime wouldn't go public and tempt someone else. It's a long fascinating story. But by then, Janis had done
herself in anyway.

 

[DREW WILEY]

... so what does this have to do with optical coatings. Nothing. But I did sometimes combine view camera shots of completed architectural projects
with my consultation work. It was a nice side gig for awhile. Not interiors. I tried to stay completely apart from the social set involved, which was
still apt to see a lot of strange colored lights with or without fresh paint.

 

[Alan Gales]

They were into rifle assassinations, bombs, etc. Hoover not only knew about it, but tried to inflame it, make it worse, in order to elicit a strong public reaction against the antiwar movement. Some of his own people were involved the whole time. He was a political manipulator, and his strategy worked in the short run, not the long run. A few of the most vocal proverbial"outside agitators" behind the riots were actually FBI plants. People died. I saw a lot of that stuff with my own eyes. The Weather Underground was even more dangerous, and modeled after the Italian Red Guard. The FBI didn't touch them until they hatched a viable plot to steal a nuke in another state. Then they raised bogus criminal charges against the people involved so the nature of the real intended crime wouldn't go public and tempt someone else. It's a long fascinating story. But by then, Janis had done
herself in anyway.

Interesting!

 

[DREW WILEY]

There was a vacant lot immediately downhill form Janis place, then the next neighbor, then yet another vacant lot slightly downhill on the other side
of them. All these folks were rich. The neighbors were so infuriated with the psychedelic restoration of Janis' mansion that they hired exactly the same contractor to build a 3-story blonde Port Orford cedar Scandavian-style very modern Zen-looking house to block the view of Janis' old place
with something patently dissimilar. So then the rich hippies who had purchased Janis' place took revenge themselves, rehired that very same
contractor yet again, bought the empty lot below the neighbor downhill, and built something to block their view. Three expensive houses in a row for that same contractor! After that he went back to school and became a Psychiatrist! Appropriate.

 

[Alan Gales]

There was a vacant lot immediately downhill form Janis place, then the next neighbor, then yet another vacant lot slightly downhill on the other side
of them. All these folks were rich. The neighbors were so infuriated with the psychedelic restoration of Janis' mansion that they hired exactly the same contractor to build a 3-story blonde Port Orford cedar Scandavian-style very modern Zen-looking house to block the view of Janis' old place
with something patently dissimilar. So then the rich hippies who had purchased Janis' place took revenge themselves, rehired that very same
contractor yet again, bought the empty lot below the neighbor downhill, and built something to block their view. Three expensive houses in a row for that same contractor! After that he went back to school and became a Psychiatrist! Appropriate.

That is hilarious!

Brian Jones of the Rolling Stones hired a fellow to build a wall in his yard. After it was completed Brian told him to tear it down and build it in different spot. When the fellow completed it Brian told him that he changed his mind and wanted it back in the original spot. Now Brian payed for all of this but he kept hiring the guy to do things and then sadistically aggravating him. They say that Brian Jones could be a real devil when he wanted to be. On the poor fellow's death bed he admitted that he was the one who drowned Brian in the swimming pool.

 

[DREW WILEY]

A few of the big name local rockers of that era are still alive, at least physically. Whether their brains are still alive is a different question. I won't mention specific names - no point, they have a hard enough time remembering who they are, or once were.

 

[Alan Gales]

A few of the big name local rockers of that era are still alive, at least physically. Whether their brains are still alive is a different question. I won't mention specific names - no point, they have a hard enough time remembering who they are, or once were.

Yeah, a lot of them that survived the 60's are dying off now. I like to have a few beers on occasion but hard drugs never appealed to me. Pot ain't so bad I guess but I hate smoking so that never appealed to me either.

 

[macfred]

... Pot ain't so bad I guess but I hate smoking so that never appealed to me either.

Maybe we should try ... Just to see the grades of Optical Glass ...

 

[DREW WILEY]

Sorry, but I just can't see eroding one's brain away by having IQ points slowly going up in smoke, even if there are worse things out there which
fry your skull far more efficiently. My vice is a really good cup of coffee.

 

[Alan Gales]

Maybe we should try ... Just to see the grades of Optical Glass ...

 

[Alan Gales]

Sorry, but I just can't see eroding one's brain away by having IQ points slowly going up in smoke, even if there are worse things out there which
fry your skull far more efficiently.

Like Politics?

 

[DREW WILEY]

Politics? That's a bit different, and seems to be more like Mt St Helens: first blowing up, then collapsing on itself under tons of hot ash.

 

[Nodda Duma]

Sorry, but I just can't see eroding one's brain away by having IQ points slowly going up in smoke, even if there are worse things out there which
fry your skull far more efficiently. My vice is a really good cup of coffee.

Some of my best lens designs were created while drunk

 

[flavio81]

Some of my best lens designs were created while drunk

Were they "bottle bottom" lenses?

 

[Dan Fromm]

Beer goggle lenses?

 

[Alan Gales]

Beer goggle lenses?

They always make women look so sexy!

 

[lxdude]

Some of my best lens designs were created while drunk

Now there's a quote for your sig line!

 

[Torshooter]

The top grade of ED glass is Schott FPL-53. Below it are 52 and 51. These are fluorite-crown mixtures. The also each come in different levels of quality, with select batches costing up to $900 a pound.

 

[Nodda Duma]

Were they "bottle bottom" lenses?

True story, one of the drunk designs was an eyepiece for a handheld imaging device...did the design in one night. When we eventually built the prototypes and demonstrated to the customer, they were blown away by the quality. Lol.

 

[flavio81]

The top grade of ED glass is Schott FPL-53. Below it are 52 and 51. These are fluorite-crown mixtures. The also each come in different levels of quality, with select batches costing up to $900 a pound.

Yes, but how much brilliance does it have? More than 10.89 lumens per milijoule?

 

[flavio81]

True story, one of the drunk designs was an eyepiece for a handheld imaging device...did the design in one night. When we eventually built the prototypes and demonstrated to the customer, they were blown away by the quality. Lol.

...Until you realized you used radiactive thorium glass for the eyepiece?

 

[Nodda Duma]

Lol no. It's out in the world and doing its job quite well. I do have stories about Thorium but not related to this one.

 

[flavio81]

Lol no. It's out in the world and doing its job quite well. I do have stories about Thorium but not related to this one.

let me guess then:

"When we eventually built the prototypes and demonstrated to the customer, they were blown away by the quality."

... because, when you were drunk, you relaxed the cost constraints of your computer optimization program, and then the program selected all sorts of high performance, expen$$$ive glass types for the eyepiece...