What is a Bortz dot?

[derekleffew]

No cheating. Please cite the origin as well as the definition.

 

[Serendipity]

I have no idea, so I'm going to guess and then google it.
My wild guess is--
A Bortz dot is a term for the F1 point used in bench focusing to describe the theoretical point source (the dot the light would originate at), named for Alfred Charcoaldabs Bortz.

 

[quarterfront]

I'm game. Okay, it's....

I got no idea.

 

[philhaney]

I have no idea, so I'm going to guess and then google it.
My wild guess is--
A Bortz dot is a term for the F1 point used in bench focusing to describe the theoretical point source (the dot the light would originate at), named for Alfred Charcoaldabs Bortz.

I tried Googling it and came up with nothing.

Yah got me.....

So, I give. What IS a Bortz dot.....?

 

[derekleffew]

I'd like to give STEVETERRY, ship, SteveB, BillESC, and especially JD (hint!), an opportunity to answer.

 

[gafftapegreenia]

While I still have no idea, a wikipedia re-direct took me from "Bortz" to "Diamond".

 

[BillESC]

Is it pale blue?

 

[TimMiller]

I'm still waiting for the answer..... I have no idea without making some calls and doing some research.

 

[DavidDaMonkey]

If it's not on Google, it doesn't exist. Cmon! Prove me wrong!

 

[derekleffew]

Try Google again, and prepare to be embarrassed.

 

[DavidDaMonkey]

Well at least it wasn't there when I originally looked, ha!

 

[highschooltech]

If it's not on Google, it doesn't exist. Cmon! Prove me wrong!

Yes because we all know that Google is the ultimate authority on everything.

 

[SteveB]

Derek

Never heard of it, or maybe was told it 30 years ago....

SB

 

[BillESC]

Earth.

 

[JD]

Sorry to disappoint but I actually have no idea!
(Unless it's that big blue dot you see for hours after glancing at an open arc )

 

[soundlight]

Derek put it in the glossary a little while back... http://www.controlbooth.com/forums/glossarys/8867-bortz-dot.html. Now if only he'd find a print or reliable internet reference!