A very high speed film formula

[AgX]

Bob,

Those photos look like stills from some `weird professor´ movie. So, in case that emulsion thing won't work, there still is Hollywood...

I like those filaments in the bulb.

[Kirk Keyes]

I like those filaments in the bulb.

Looks like the filaments are a heat-wire vacuum guage...

Bob - there's no shame in failure. How better for us all to learn. And if I get around to working on silver electrode, I'd be happy to share my findings. Good or not so good.

[rmazzullo]

Bob,

Those photos look like stills from some `weird professor´ movie. So, in case that emulsion thing won't work, there still is Hollywood...

I like those filaments in the bulb.

OK...I have to nip this in the bud before it gets out of hand.

Sorry folks, those photos are indeed movie stills...I hope some of you picked up on the wink () the first time around. I couldn't resist the urge. Judging from the spike in hits to this thread, I should have done this on April 1st.

---------------

Kirk,

I have to study and understand more about electrochemistry before I can really contribute to these discussions.

Bob M.

[Kirk Keyes]

Bob - OK, feel free to ask. But I have to admit electrochemistry is not one of my strong points! But I do enjoy instrument design.

[wildbillbugman]

Bob and Kirk,
Those stills actualy remind me of (my memory of) the Chem Lab for my freshman Q.A. course in 1966! Things were alot different back then!
Bill

[Kirk Keyes]

PE - do you have some example patents to recommend looking at for this methodology?

[Photo Engineer]

None whatsoever. Sorry.

This, the Kodak kettle design and other arcana are deep dark manufacturing secrets.

PE

[Kirk Keyes]

Could you look at US 3505068 - it looks similar. It uses a "buried iodide emulsion"

[Photo Engineer]

The 1970 reference in that patent, and the names of the inventors tell me immediately that it is not a "modern" emulsion, but rather was just at the turning point of many of these techniques. For some reason I could not view the whole patent. I'll check later at the US patent office site.

PE

[Kirk Keyes]

There's another more recent one I think that uses "core shell" techniques. I'll see if I can find it.