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Origyptian Wrote:

> So then, perhaps it really was a 'stain' after all
> and not just a flash artifact.

If it is white candle wax then the illuminant (flash) has made a very good job of rendering it as exactly what it is, white candle wax.
Or an unknown white residue.
Anything that appears as white obviously has a higher reflective index and reflects all wavelengths equally than anything that is not white. Which is exactly why it appears as white and we refer to it as white.
Black being identical in that it reflects all wavelengths equally but at a much lower amplitude (intensity) therefore appears as very dark white... Which we call black.
Yes, black and white are the same in terms of spectral reflectance.
Halfway in terms of reflectance (reflected amplitude) is called grey. More specifically 18% grey.

The other localised white hotspots/artifacts are specular highlights which occur when a part of the reflective surface (the wall) that is positioned at exactly the right angle relative to the flash and lens reflect the transmitted light directly back into the camera lens. If you illuminate a surface you will see a hotspot. For example catchlights in a persons eye.
A specular highlight.
In reality there are no white dots in the persons iris.

In the photos the spectral highlights (Hotspots on the wall) are remote from the 'stains'. The 'stains' therefore not being at the optimum position and angle to produce spectral highlights.
The stains appear in the photograph as being white because they are white, High reflective index and reflecting all wavelengths equally.

Something else to consider is orthochromatic or panchromatic photographic emulsion.
Early emulsions were orthochromatic in that they were less sensitive at the red end of the spectrum. Later panchromatic being equally sensitive to all wavelengths.
Orthochromatic emulsions continued to be used in darkrooms (printing), as they are unaffected by red light. "Darkroom Safelight"

Trivia.
Look at a early B&W orthochromatic photo of a red white and blue flag. The red will appear as near black.
A later panchromatic emulsion will render the red as grey.
Airplane's are good because they tend to have red white and blue national insignia. WW1 planes vs. WW2 planes.
Americans were earlier and better at it than Europeans because George Eastman (Mr. Kodak) was an American.
They didn't want to share the technology for commercial and military reasons. (Hollywood/Wars)
Kinda like the wheel ;)

So yes it could very well be a white residue or stain that was once in liquid form as demonstrated by the flow pattern.
I don't know how one would determine the exact chemical nature of the white stain.
An as yet undefined white stain?

Rant over:)

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Re: Water marks on King's Chamber shaft opening 498 Thanos5150 13-Aug-17 15:58
Re: Water marks on King's Chamber shaft opening 473 Romulus the 2nd 13-Aug-17 16:14
Re: Water marks on King's Chamber shaft opening 467 Jon Ellison 13-Aug-17 16:25
Re: Water marks on King's Chamber shaft opening 387 Romulus the 2nd 13-Aug-17 16:32
Re: Water marks on King's Chamber shaft opening 339 Jon Ellison 13-Aug-17 16:41
Re: Water marks on King's Chamber shaft opening 323 Romulus the 2nd 13-Aug-17 16:38
Re: Water marks on King's Chamber shaft opening 348 Jon Ellison 13-Aug-17 16:52
Re: Water marks on King's Chamber shaft opening 355 Romulus the 2nd 13-Aug-17 16:58
Re: Water marks on King's Chamber shaft opening 377 Jon Ellison 13-Aug-17 17:06
Re: Water marks on King's Chamber shaft opening 285 Thanos5150 14-Aug-17 20:04
Re: Water marks on King's Chamber shaft opening 428 Thanos5150 13-Aug-17 18:31
Re: Water marks on King's Chamber shaft opening 374 Romulus the 2nd 13-Aug-17 21:24
Re: Water marks on King's Chamber shaft opening 407 Thanos5150 13-Aug-17 23:57
Re: Water marks on King's Chamber shaft opening 354 Romulus the 2nd 14-Aug-17 08:53
Re: Water marks on King's Chamber shaft opening 298 Jon Ellison 14-Aug-17 10:06
Re: Water marks on King's Chamber shaft opening 280 Romulus the 2nd 14-Aug-17 22:38
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Re: Water marks on Queen's Chamber 372 Jon Ellison 14-Aug-17 00:40
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Re: Water marks on King's Chamber shaft opening 328 Origyptian 15-Aug-17 16:55
Re: Water marks on King's Chamber shaft opening 231 Romulus the 2nd 16-Aug-17 22:46
Re: Water marks on King's Chamber shaft opening 300 M. J. Thomas 14-Aug-17 09:16
Re: Water marks on King's Chamber shaft opening 289 Merrell 14-Aug-17 11:34
Re: Water marks on King's Chamber shaft opening 281 Romulus the 2nd 14-Aug-17 12:03
Re: Water marks on King's Chamber shaft opening 250 M. J. Thomas 14-Aug-17 16:05
Re: Water marks on King's Chamber shaft opening 280 Origyptian 14-Aug-17 17:30
Re: Water marks on King's Chamber shaft opening 239 M. J. Thomas 14-Aug-17 19:00
Re: Water marks on King's Chamber shaft opening 246 Origyptian 14-Aug-17 20:33
Re: Water marks on King's Chamber shaft opening 234 M. J. Thomas 14-Aug-17 22:31
Re: Water marks on King's Chamber shaft opening 262 Jon Ellison 14-Aug-17 23:12
Re: Water marks on King's Chamber shaft opening 253 Origyptian 14-Aug-17 23:40
Re: Water marks on King's Chamber shaft opening 235 Jon Ellison 15-Aug-17 00:12
Re: Water marks on King's Chamber shaft opening 276 M. J. Thomas 15-Aug-17 00:45
Re: Water marks on King's Chamber shaft opening 292 Jon Ellison 15-Aug-17 07:54
Re: Water marks on King's Chamber shaft opening 239 Origyptian 15-Aug-17 13:36
Re: Water marks on King's Chamber shaft opening 249 Origyptian 14-Aug-17 23:25
Re: Water marks on King's Chamber shaft opening 224 Jon Ellison 14-Aug-17 23:39
Re: Water marks on King's Chamber shaft opening 272 cladking 15-Aug-17 00:59
Re: Water marks on King's Chamber shaft opening 277 Jon Ellison 14-Aug-17 12:51
Re: Water marks on King's Chamber shaft opening 233 Romulus the 2nd 14-Aug-17 14:13
Re: Water marks on King's Chamber shaft opening 276 Thunderbird 15-Aug-17 01:18
Re: Water marks on King's Chamber shaft opening 251 Origyptian 14-Aug-17 15:57
Re: Water marks on King's Chamber shaft opening 319 cladking 14-Aug-17 17:31
Re: Water marks on King's Chamber shaft opening 257 Jon Ellison 14-Aug-17 19:08
Re: Water marks on King's Chamber shaft opening 272 Origyptian 14-Aug-17 20:40
Re: Water marks on King's Chamber shaft opening 436 Thanos5150 14-Aug-17 16:37
Re: Water marks on King's Chamber shaft opening 350 Origyptian 14-Aug-17 17:52
Re: Water marks on King's Chamber shaft opening 319 M. J. Thomas 14-Aug-17 20:08
Re: Water marks on King's Chamber shaft opening 127 Origyptian 14-Aug-17 20:44
Re: Water marks on King's Chamber shaft opening 362 Thanos5150 14-Aug-17 21:00
Re: Water marks on King's Chamber shaft opening 274 Romulus the 2nd 14-Aug-17 22:41
Re: Water marks on King's Chamber shaft opening 264 Jon Ellison 14-Aug-17 22:57
Re: Water marks on King's Chamber shaft opening 250 Origyptian 14-Aug-17 23:32
Re: Water marks on King's Chamber shaft opening 271 Romulus the 2nd 15-Aug-17 12:42
Re: Water marks on King's Chamber shaft opening 319 Origyptian 15-Aug-17 14:29
Re: Water marks on King's Chamber shaft opening 249 Romulus the 2nd 15-Aug-17 15:55
Re: Water marks on King's Chamber shaft opening 287 Origyptian 15-Aug-17 16:38
Re: Water marks on King's Chamber shaft opening 224 Thanos5150 15-Aug-17 21:11
Re: Water marks on King's Chamber shaft opening 232 Romulus the 2nd 15-Aug-17 22:45
Re: Water marks on King's Chamber shaft opening 249 Jon Ellison 15-Aug-17 23:06
Re: Water marks on King's Chamber shaft opening 259 M. J. Thomas 15-Aug-17 15:36
Re: Water marks on King's Chamber shaft opening 266 Romulus the 2nd 15-Aug-17 16:04
Re: Water marks on King's Chamber shaft opening 328 Jon Ellison 15-Aug-17 16:26
Re: Water marks on King's Chamber shaft opening 257 M. J. Thomas 15-Aug-17 19:25
Re: Water marks on King's Chamber shaft opening 232 Origyptian 15-Aug-17 20:09
Re: Water marks on King's Chamber shaft opening 258 M. J. Thomas 15-Aug-17 21:53
Re: Water marks on King's Chamber shaft opening 244 Origyptian 15-Aug-17 22:14
Re: Water marks on King's Chamber shaft opening 237 Jon Ellison 15-Aug-17 20:26
Re: Water marks on King's Chamber shaft opening 254 M. J. Thomas 15-Aug-17 21:24
Re: Water marks on King's Chamber shaft opening 241 M. J. Thomas 15-Aug-17 21:27
Re: Water marks on King's Chamber shaft opening 237 Jon Ellison 15-Aug-17 22:57
Re: Water marks on King's Chamber shaft opening 271 M. J. Thomas 15-Aug-17 23:38
Re: Water marks on King's Chamber shaft opening 220 Origyptian 15-Aug-17 23:04
Re: Water marks on King's Chamber shaft opening 261 M. J. Thomas 15-Aug-17 23:53
Re: Water marks on King's Chamber shaft opening 268 Origyptian 16-Aug-17 00:49
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Re: Water marks on King's Chamber shaft opening 338 Origyptian 14-Aug-17 23:05
Re: Water marks on King's Chamber shaft opening 269 Romulus the 2nd 15-Aug-17 11:34
Re: Water marks on King's Chamber shaft opening 275 Jon Ellison 15-Aug-17 12:16
Re: Water marks on King's Chamber shaft opening 275 Origyptian 15-Aug-17 13:46
Re: Water marks on King's Chamber shaft opening 279 Thanos5150 15-Aug-17 20:57
Re: Water marks on King's Chamber shaft opening 263 Origyptian 15-Aug-17 21:58
Re: Water marks on King's Chamber shaft opening 250 Apap 15-Aug-17 23:33
Re: Water marks on King's Chamber shaft opening 260 Origyptian 16-Aug-17 00:44
Re: Water marks on King's Chamber shaft opening 186 Thanos5150 16-Aug-17 01:13
Re: Water marks on King's Chamber shaft opening 240 Thanos5150 16-Aug-17 01:25
Re: Water marks on King's Chamber shaft opening 273 Thanos5150 16-Aug-17 01:31
Re: Water marks on King's Chamber shaft opening 230 Origyptian 16-Aug-17 03:47
Re: Water marks on King's Chamber shaft opening 301 Thanos5150 16-Aug-17 04:41
Re: Water marks on King's Chamber shaft opening 231 Origyptian 16-Aug-17 12:29
Re: Water marks on King's Chamber shaft opening 292 Thanos5150 16-Aug-17 14:30
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Re: Water marks on King's Chamber shaft opening 273 Romulus the 2nd 17-Aug-17 23:18
Re: Water marks on King's Chamber shaft opening 224 Origyptian 18-Aug-17 16:42
Re: Water marks on King's Chamber shaft opening 262 Jon Ellison 18-Aug-17 16:56
Re: Water marks on King's Chamber shaft opening 253 Romulus the 2nd 18-Aug-17 19:44
Re: Water marks on King's Chamber shaft opening 231 Origyptian 18-Aug-17 20:04
Re: Water marks on King's Chamber shaft opening 239 Jon Ellison 18-Aug-17 20:44
Re: Water marks on King's Chamber shaft opening 233 Origyptian 18-Aug-17 21:07
Re: Water marks on King's Chamber shaft opening 218 Thanos5150 18-Aug-17 22:10
Re: Water marks on King's Chamber shaft opening 254 Apap 18-Aug-17 22:35
Re: Water marks on King's Chamber shaft opening 227 Jon Ellison 18-Aug-17 23:05
Re: Water marks on King's Chamber shaft opening 279 Thanos5150 18-Aug-17 23:30
Re: Water marks on King's Chamber shaft opening 239 Apap 18-Aug-17 23:32
Re: Water marks on King's Chamber shaft opening 225 Jon Ellison 18-Aug-17 23:49
Re: Water marks on King's Chamber shaft opening 228 Apap 19-Aug-17 00:03
Re: Water marks on King's Chamber shaft opening 263 Jon Ellison 19-Aug-17 00:08
Re: Water marks on King's Chamber shaft opening 168 Romulus the 2nd 22-Aug-17 10:00
Re: Water marks on King's Chamber shaft opening 165 Jon Ellison 22-Aug-17 11:21
Re: Water marks on King's Chamber shaft opening 180 Jon Ellison 22-Aug-17 11:39
Re: Water marks on King's Chamber shaft opening 184 Romulus the 2nd 22-Aug-17 21:06
Re: Water marks on King's Chamber shaft opening 198 Origyptian 22-Aug-17 12:02
Re: Water marks on King's Chamber shaft opening 130 Romulus the 2nd 22-Aug-17 21:15
Re: Water marks on King's Chamber shaft opening 160 Origyptian 23-Aug-17 04:01
Re: Water marks on King's Chamber shaft opening 216 Audrey 23-Aug-17 02:09
Re: Water marks on King's Chamber shaft opening 188 Origyptian 23-Aug-17 04:06
Re: Water marks on King's Chamber shaft opening 294 Jon Ellison 23-Aug-17 08:57
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Re: Water marks on King's Chamber shaft opening 248 Origyptian 19-Aug-17 15:34
Re: Water marks on King's Chamber shaft opening 377 Apap 17-Aug-17 18:45
Re: Water marks on King's Chamber shaft opening 303 Romulus the 2nd 18-Aug-17 00:36
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Re: Water marks on King's Chamber shaft opening 258 Origyptian 18-Aug-17 17:23
Re: Water marks on King's Chamber shaft opening 226 M. J. Thomas 18-Aug-17 18:22
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Re: Water marks on King's Chamber shaft opening 312 Origyptian 18-Aug-17 20:23
Re: Water marks on King's Chamber shaft opening 252 Romulus the 2nd 18-Aug-17 19:49
Re: Water marks on King's Chamber shaft opening 229 Origyptian 18-Aug-17 16:50
Re: Water marks on King's Chamber shaft opening 284 Apap 18-Aug-17 18:05
Re: Water marks on King's Chamber shaft opening 234 Jon Ellison 18-Aug-17 19:20
Re: Water marks on King's Chamber shaft opening 234 Jon Ellison 18-Aug-17 19:58
Re: Water marks on King's Chamber shaft opening 245 Jon Ellison 18-Aug-17 20:28
Re: Water marks on King's Chamber shaft opening 224 Origyptian 18-Aug-17 20:15
Re: Water marks on King's Chamber shaft opening 255 Romulus the 2nd 18-Aug-17 20:16
Re: Water marks on King's Chamber shaft opening 266 Apap 18-Aug-17 22:02
Re: Water marks on King's Chamber shaft opening 227 Origyptian 19-Aug-17 15:10
Re: Water marks on King's Chamber shaft opening 170 Romulus the 2nd 20-Aug-17 21:59
Re: Water marks on King's Chamber shaft opening 264 DUNE 19-Aug-17 12:16
Re: Water marks on King's Chamber shaft opening 246 M. J. Thomas 19-Aug-17 20:54
Re: Water marks on King's Chamber shaft opening 260 Jon Ellison 19-Aug-17 22:04
Re: Water marks on King's Chamber shaft opening 255 DUNE 19-Aug-17 22:51
Re: Water marks on King's Chamber shaft opening 220 Origyptian 19-Aug-17 23:17
Re: Water marks on King's Chamber shaft opening 257 Origyptian 21-Aug-17 03:02
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Re: Water marks on King's Chamber shaft opening 237 Apap 18-Aug-17 21:43
Re: Water marks on King's Chamber shaft opening 242 Dr. Troglodyte 18-Aug-17 22:54
Re: Water marks on King's Chamber shaft opening 285 Apap 18-Aug-17 23:51
Re: Water marks on King's Chamber shaft opening 302 Origyptian 19-Aug-17 15:53
Re: Water marks on King's Chamber shaft opening 212 M. J. Thomas 20-Aug-17 00:55
Re: Water marks on King's Chamber shaft opening 177 Origyptian 20-Aug-17 04:15


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