Some Early Stereos...
 

Well not in the usual context:

https://soundofthehound.files.wordpr.../marconi81.jpg


http://www.americanradiohistory.com/...=%22stereos%22

Lawrence.

Re: Some Early Stereos...
 

Seems to suggest that in this context Marconi are using the word 'stereo' to describe an image. Strange.

Re: Some Early Stereos...
 

Stereo image, yes, similar to these.
https://en.m.wikipedia.org/wiki/Stereoscopy

Re: Some Early Stereos...
 

I think Stereo is short for Stereotype, part of the printing process.

As far as I understand, once the Typesetter had laid out all the letters and graphics required in a frame, a mould would be made of the completed artwork.

The mould is then used to create a metal printing block of the artwork that can be used in the press. The individual type that created it can be dis-assembled and re-used.

Maybe Marconi were offering dealers printing blocks (or moulds?) that they could give to their printers for use in local newspapers and advertising. You'd just be sent a hi-res image file these days.

SR

Re: Some Early Stereos...
 

Well no, the Marconi document is nothing to do with stereo images as in left and right; stereo viewing. It's purely 'mono' viewing.

Re: Some Early Stereos...
 

Interesting usage of the term, which I hadn't encountered before.

Re: Some Early Stereos...
 

Hi Steve,
Did you look at the WW link in the original post, it shows a stereo viewer with the photos. The first link does show individual images, this was an advert to show what was available for the viewer.
That’s how I understand it.

Re: Some Early Stereos...
 

Weren't stereoscopes used during WWII to analyse images taken by the PRU aircraft with two cameras mounted? Wasn't that how the ramps at Peenemunde for the V1 launchers were discovered?

Re: Some Early Stereos...
 

Re: Some Early Stereos...
 

The first item is clearly referring to printing blocks. If you zoom in on the text in the square box in the bottom right hand corner, it says that the stereos are available in larger sizes. This only makes sense in the context of printing blocks, because AFAIK stereo photo pairs of that era were only produced in one size which was determined by the distance apart of human eyes.

Conversely, the second (Wireless World) item is referring to stereo pairs for 3D viewing.

My understanding is that the WWII stereo photos were taken sequentially, possibly using only a single camera, from an aircraft flying in a straight line, in order to get a larger baseline to enhance the stereo effect.

Edit: crossed with Frank's post. The article refers to sequences of prints with 60% overlap.

Re: Some Early Stereos...
 

For anyone who is unaware, stereo means 'solid' - hence stereophonic and stereoscopic, referring to the three-dimensional images produced.
Stereotype alludes to the fact that the whole illustration is made in one piece. They were often pierced, however, to allow standard type to be used to insert a maker's name or whatever.

Re: Some Early Stereos...
 

I disagree. The first (Marconi) document makes no mention whatsoever of stereo imagery, and - in my opinion - any such link is purely speculative. The second document, undoubtedly, includes a piece about stereo imagery. I have a couple of sets of those vintage viewing 'glasses', so I know what they are and how they work.

Re: Some Early Stereos...
 

That ok Steve, that’s what I thought they were, if I am wrong, that fair enough, not be the first time.

Re: Some Early Stereos...
 

It does beg the question of when stereophonic was shortened to stereo - as an adjective, and then as a noun (in the audio reproduction sense).

Re: Some Early Stereos...
 

...and have its pronunciation changed, for that matter.

Re: Some Early Stereos...
 

I believe the word stereo is derived from the classic Greek word stereos, meaning solid, three dimensional.
Phonetic Spelling: (ster-eh-os')
https://www.etymonline.com/word/stereo-

DFWB.