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Imaging the Goulston St Graffito
Casebook Message Boards: General Discussion: Miscellaneous:
Imaging the Goulston St Graffito
Author: Timsta
Tuesday, 24 September 2002 - 11:32 pm |        | ok...we have a brick surface, possibly glazed, possibly porous. There will surely be some chalk residue at microscopic level either in the pores of the brick or in the microscopic structure of the glaze, which survived the washing-off process.
On top of this residue is an unknown number of layers of paint - 114 years worth or thereabouts.
I'm assuming the chemical signature of the chalk is differentiable from the chemical signature of the paint covering it. (What pigments would be found in the paint? Is the chalk simply calcium carbonate or are there other compounds present? What interaction would there be between the paint and the chalk residue? Does it matter if solvents have been used on the surface?)
ok..what equipment do I need to pick up the chalk signature? Proton spectrometer? Fluoroscope?
How do we do this, people?
Regards
Timsta |
Author: Monty
Wednesday, 25 September 2002 - 08:13 am | | Timsta,
Proton spectrometer ??
That was in 'Ghostbusters' wasnt it ?
From what I could figure, there was only 2 layers of paint before you got down to the brick.
Monty
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Author: Timsta
Wednesday, 25 September 2002 - 12:03 pm | | Monty:
Hahahaha. I think that was a "positron collider"
A proton spectrometer is a real device. It bounces protons off a surface and measures the reflection (emission) spectrum. They had one on the Mars Rover, it's a pretty standard part of a geologist's toolkit these days. It can tell you the chemical composition of rocks, etc. I think it, or something like it, *might* be able to pick up small traces of a different compound on the surface of the brick (assuming the paint doesn't mask it).
Alternatively, a fluoroscope might produce the same result. I'm no expert on these things but hopefully someone reading this might be.
Gotta be at least as interesting a project as drilling holes in the Great Pyramid on live TV.
Only two layers of paint, huh? Even better, we might be able to remove the topmost one with a little careful swabbing.
Regards
Timsta |
Author: Robert Maloney
Thursday, 26 September 2002 - 09:26 am | | Having been a long time fan of the Vigilance Committee, I have often wondered what Mr. Lusk, the Master Builder "hisself", would have thought of the architecture of the Goulston street archway. "Doric" Lodge member that he was!
Temple symbolism anyone? Does anyone speak "D-o-o-r"-i-c?
Which reminds me of one of my favorite movies, The Picture of Dorian Gray. Perhaps Wilde was telling us something in his story about a man who sells his soul to the devil in the hope to stay forever young.
The question is, how does one synthesize this theory with that of a Celto-Jewish, Radical, Gypsy, Manchurian (as in candidate) conspiracy?
Rob |
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