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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 513 Thanos5150 13-Aug-17 15:58
Re: Water marks on King's Chamber shaft opening 484 Romulus the 2nd 13-Aug-17 16:14
Re: Water marks on King's Chamber shaft opening 478 Jon Ellison 13-Aug-17 16:25
Re: Water marks on King's Chamber shaft opening 426 Romulus the 2nd 13-Aug-17 16:32
Re: Water marks on King's Chamber shaft opening 357 Jon Ellison 13-Aug-17 16:41
Re: Water marks on King's Chamber shaft opening 337 Romulus the 2nd 13-Aug-17 16:38
Re: Water marks on King's Chamber shaft opening 361 Jon Ellison 13-Aug-17 16:52
Re: Water marks on King's Chamber shaft opening 377 Romulus the 2nd 13-Aug-17 16:58
Re: Water marks on King's Chamber shaft opening 391 Jon Ellison 13-Aug-17 17:06
Re: Water marks on King's Chamber shaft opening 300 Thanos5150 14-Aug-17 20:04
Re: Water marks on King's Chamber shaft opening 442 Thanos5150 13-Aug-17 18:31
Re: Water marks on King's Chamber shaft opening 391 Romulus the 2nd 13-Aug-17 21:24
Re: Water marks on King's Chamber shaft opening 427 Thanos5150 13-Aug-17 23:57
Re: Water marks on King's Chamber shaft opening 366 Romulus the 2nd 14-Aug-17 08:53
Re: Water marks on King's Chamber shaft opening 310 Jon Ellison 14-Aug-17 10:06
Re: Water marks on King's Chamber shaft opening 301 Romulus the 2nd 14-Aug-17 22:38
Re: Water marks on Queen's Chamber 377 Howard West 13-Aug-17 23:59
Re: Water marks on Queen's Chamber 392 Jon Ellison 14-Aug-17 00:40
Re: Water marks on Queen's Chamber 337 Howard West 14-Aug-17 14:59
Re: Water marks on Queen's Chamber 273 D-Archer 15-Aug-17 10:35
Re: Water marks on Queen's Chamber 294 Origyptian 15-Aug-17 13:41
Re: Water marks on Queen's Chamber 255 D-Archer 15-Aug-17 14:13
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Re: Water marks on Queen's Chamber 252 Origyptian 15-Aug-17 16:23
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Re: Water marks on King's Chamber shaft opening 343 Origyptian 15-Aug-17 16:55
Re: Water marks on King's Chamber shaft opening 250 Romulus the 2nd 16-Aug-17 22:46
Re: Water marks on King's Chamber shaft opening 316 M. J. Thomas 14-Aug-17 09:16
Re: Water marks on King's Chamber shaft opening 300 Merrell 14-Aug-17 11:34
Re: Water marks on King's Chamber shaft opening 294 Romulus the 2nd 14-Aug-17 12:03
Re: Water marks on King's Chamber shaft opening 267 M. J. Thomas 14-Aug-17 16:05
Re: Water marks on King's Chamber shaft opening 293 Origyptian 14-Aug-17 17:30
Re: Water marks on King's Chamber shaft opening 251 M. J. Thomas 14-Aug-17 19:00
Re: Water marks on King's Chamber shaft opening 258 Origyptian 14-Aug-17 20:33
Re: Water marks on King's Chamber shaft opening 246 M. J. Thomas 14-Aug-17 22:31
Re: Water marks on King's Chamber shaft opening 283 Jon Ellison 14-Aug-17 23:12
Re: Water marks on King's Chamber shaft opening 265 Origyptian 14-Aug-17 23:40
Re: Water marks on King's Chamber shaft opening 246 Jon Ellison 15-Aug-17 00:12
Re: Water marks on King's Chamber shaft opening 296 M. J. Thomas 15-Aug-17 00:45
Re: Water marks on King's Chamber shaft opening 304 Jon Ellison 15-Aug-17 07:54
Re: Water marks on King's Chamber shaft opening 263 Origyptian 15-Aug-17 13:36
Re: Water marks on King's Chamber shaft opening 264 Origyptian 14-Aug-17 23:25
Re: Water marks on King's Chamber shaft opening 242 Jon Ellison 14-Aug-17 23:39
Re: Water marks on King's Chamber shaft opening 285 cladking 15-Aug-17 00:59
Re: Water marks on King's Chamber shaft opening 291 Jon Ellison 14-Aug-17 12:51
Re: Water marks on King's Chamber shaft opening 241 Romulus the 2nd 14-Aug-17 14:13
Re: Water marks on King's Chamber shaft opening 306 Thunderbird 15-Aug-17 01:18
Re: Water marks on King's Chamber shaft opening 271 Origyptian 14-Aug-17 15:57
Re: Water marks on King's Chamber shaft opening 339 cladking 14-Aug-17 17:31
Re: Water marks on King's Chamber shaft opening 273 Jon Ellison 14-Aug-17 19:08
Re: Water marks on King's Chamber shaft opening 284 Origyptian 14-Aug-17 20:40
Re: Water marks on King's Chamber shaft opening 461 Thanos5150 14-Aug-17 16:37
Re: Water marks on King's Chamber shaft opening 373 Origyptian 14-Aug-17 17:52
Re: Water marks on King's Chamber shaft opening 338 M. J. Thomas 14-Aug-17 20:08
Re: Water marks on King's Chamber shaft opening 134 Origyptian 14-Aug-17 20:44
Re: Water marks on King's Chamber shaft opening 380 Thanos5150 14-Aug-17 21:00
Re: Water marks on King's Chamber shaft opening 295 Romulus the 2nd 14-Aug-17 22:41
Re: Water marks on King's Chamber shaft opening 279 Jon Ellison 14-Aug-17 22:57
Re: Water marks on King's Chamber shaft opening 266 Origyptian 14-Aug-17 23:32
Re: Water marks on King's Chamber shaft opening 286 Romulus the 2nd 15-Aug-17 12:42
Re: Water marks on King's Chamber shaft opening 332 Origyptian 15-Aug-17 14:29
Re: Water marks on King's Chamber shaft opening 264 Romulus the 2nd 15-Aug-17 15:55
Re: Water marks on King's Chamber shaft opening 302 Origyptian 15-Aug-17 16:38
Re: Water marks on King's Chamber shaft opening 236 Thanos5150 15-Aug-17 21:11
Re: Water marks on King's Chamber shaft opening 246 Romulus the 2nd 15-Aug-17 22:45
Re: Water marks on King's Chamber shaft opening 271 Jon Ellison 15-Aug-17 23:06
Re: Water marks on King's Chamber shaft opening 272 M. J. Thomas 15-Aug-17 15:36
Re: Water marks on King's Chamber shaft opening 278 Romulus the 2nd 15-Aug-17 16:04
Re: Water marks on King's Chamber shaft opening 349 Jon Ellison 15-Aug-17 16:26
Re: Water marks on King's Chamber shaft opening 268 M. J. Thomas 15-Aug-17 19:25
Re: Water marks on King's Chamber shaft opening 244 Origyptian 15-Aug-17 20:09
Re: Water marks on King's Chamber shaft opening 272 M. J. Thomas 15-Aug-17 21:53
Re: Water marks on King's Chamber shaft opening 266 Origyptian 15-Aug-17 22:14
Re: Water marks on King's Chamber shaft opening 251 Jon Ellison 15-Aug-17 20:26
Re: Water marks on King's Chamber shaft opening 275 M. J. Thomas 15-Aug-17 21:24
Re: Water marks on King's Chamber shaft opening 257 M. J. Thomas 15-Aug-17 21:27
Re: Water marks on King's Chamber shaft opening 252 Jon Ellison 15-Aug-17 22:57
Re: Water marks on King's Chamber shaft opening 283 M. J. Thomas 15-Aug-17 23:38
Re: Water marks on King's Chamber shaft opening 233 Origyptian 15-Aug-17 23:04
Re: Water marks on King's Chamber shaft opening 275 M. J. Thomas 15-Aug-17 23:53
Re: Water marks on King's Chamber shaft opening 284 Origyptian 16-Aug-17 00:49
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Re: Great Step ‘V-Shape’ Depression 316 Romulus the 2nd 16-Aug-17 22:44
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Re: Water marks on King's Chamber shaft opening 363 Origyptian 14-Aug-17 23:05
Re: Water marks on King's Chamber shaft opening 285 Romulus the 2nd 15-Aug-17 11:34
Re: Water marks on King's Chamber shaft opening 292 Jon Ellison 15-Aug-17 12:16
Re: Water marks on King's Chamber shaft opening 299 Origyptian 15-Aug-17 13:46
Re: Water marks on King's Chamber shaft opening 295 Thanos5150 15-Aug-17 20:57
Re: Water marks on King's Chamber shaft opening 272 Origyptian 15-Aug-17 21:58
Re: Water marks on King's Chamber shaft opening 262 Apap 15-Aug-17 23:33
Re: Water marks on King's Chamber shaft opening 273 Origyptian 16-Aug-17 00:44
Re: Water marks on King's Chamber shaft opening 196 Thanos5150 16-Aug-17 01:13
Re: Water marks on King's Chamber shaft opening 257 Thanos5150 16-Aug-17 01:25
Re: Water marks on King's Chamber shaft opening 289 Thanos5150 16-Aug-17 01:31
Re: Water marks on King's Chamber shaft opening 251 Origyptian 16-Aug-17 03:47
Re: Water marks on King's Chamber shaft opening 311 Thanos5150 16-Aug-17 04:41
Re: Water marks on King's Chamber shaft opening 249 Origyptian 16-Aug-17 12:29
Re: Water marks on King's Chamber shaft opening 302 Thanos5150 16-Aug-17 14:30
Re: Water marks on King's Chamber shaft opening 266 Jon Ellison 16-Aug-17 13:01
Re: Water marks on King's Chamber shaft opening 367 Romulus the 2nd 16-Aug-17 21:03
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Re: Water marks on King's Chamber shaft opening 293 cladking 17-Aug-17 21:43
Re: Water marks on King's Chamber shaft opening 288 Romulus the 2nd 17-Aug-17 23:18
Re: Water marks on King's Chamber shaft opening 238 Origyptian 18-Aug-17 16:42
Re: Water marks on King's Chamber shaft opening 273 Jon Ellison 18-Aug-17 16:56
Re: Water marks on King's Chamber shaft opening 269 Romulus the 2nd 18-Aug-17 19:44
Re: Water marks on King's Chamber shaft opening 244 Origyptian 18-Aug-17 20:04
Re: Water marks on King's Chamber shaft opening 253 Jon Ellison 18-Aug-17 20:44
Re: Water marks on King's Chamber shaft opening 248 Origyptian 18-Aug-17 21:07
Re: Water marks on King's Chamber shaft opening 239 Thanos5150 18-Aug-17 22:10
Re: Water marks on King's Chamber shaft opening 269 Apap 18-Aug-17 22:35
Re: Water marks on King's Chamber shaft opening 241 Jon Ellison 18-Aug-17 23:05
Re: Water marks on King's Chamber shaft opening 292 Thanos5150 18-Aug-17 23:30
Re: Water marks on King's Chamber shaft opening 262 Apap 18-Aug-17 23:32
Re: Water marks on King's Chamber shaft opening 235 Jon Ellison 18-Aug-17 23:49
Re: Water marks on King's Chamber shaft opening 241 Apap 19-Aug-17 00:03
Re: Water marks on King's Chamber shaft opening 274 Jon Ellison 19-Aug-17 00:08
Re: Water marks on King's Chamber shaft opening 185 Romulus the 2nd 22-Aug-17 10:00
Re: Water marks on King's Chamber shaft opening 177 Jon Ellison 22-Aug-17 11:21
Re: Water marks on King's Chamber shaft opening 193 Jon Ellison 22-Aug-17 11:39
Re: Water marks on King's Chamber shaft opening 198 Romulus the 2nd 22-Aug-17 21:06
Re: Water marks on King's Chamber shaft opening 210 Origyptian 22-Aug-17 12:02
Re: Water marks on King's Chamber shaft opening 145 Romulus the 2nd 22-Aug-17 21:15
Re: Water marks on King's Chamber shaft opening 173 Origyptian 23-Aug-17 04:01
Re: Water marks on King's Chamber shaft opening 233 Audrey 23-Aug-17 02:09
Re: Water marks on King's Chamber shaft opening 206 Origyptian 23-Aug-17 04:06
Re: Water marks on King's Chamber shaft opening 307 Jon Ellison 23-Aug-17 08:57
Re: Water marks on King's Chamber shaft opening 245 Jon Ellison 19-Aug-17 00:04
Re: Water marks on King's Chamber shaft opening 261 Origyptian 19-Aug-17 15:34
Re: Water marks on King's Chamber shaft opening 393 Apap 17-Aug-17 18:45
Re: Water marks on King's Chamber shaft opening 314 Romulus the 2nd 18-Aug-17 00:36
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Re: Water marks on King's Chamber shaft opening 272 Origyptian 18-Aug-17 17:23
Re: Water marks on King's Chamber shaft opening 240 M. J. Thomas 18-Aug-17 18:22
Re: Water marks on King's Chamber shaft opening 284 Jon Ellison 18-Aug-17 19:12
Re: Water marks on King's Chamber shaft opening 334 Origyptian 18-Aug-17 20:23
Re: Water marks on King's Chamber shaft opening 272 Romulus the 2nd 18-Aug-17 19:49
Re: Water marks on King's Chamber shaft opening 240 Origyptian 18-Aug-17 16:50
Re: Water marks on King's Chamber shaft opening 314 Apap 18-Aug-17 18:05
Re: Water marks on King's Chamber shaft opening 246 Jon Ellison 18-Aug-17 19:20
Re: Water marks on King's Chamber shaft opening 247 Jon Ellison 18-Aug-17 19:58
Re: Water marks on King's Chamber shaft opening 257 Jon Ellison 18-Aug-17 20:28
Re: Water marks on King's Chamber shaft opening 243 Origyptian 18-Aug-17 20:15
Re: Water marks on King's Chamber shaft opening 271 Romulus the 2nd 18-Aug-17 20:16
Re: Water marks on King's Chamber shaft opening 281 Apap 18-Aug-17 22:02
Re: Water marks on King's Chamber shaft opening 238 Origyptian 19-Aug-17 15:10
Re: Water marks on King's Chamber shaft opening 184 Romulus the 2nd 20-Aug-17 21:59
Re: Water marks on King's Chamber shaft opening 275 DUNE 19-Aug-17 12:16
Re: Water marks on King's Chamber shaft opening 251 M. J. Thomas 19-Aug-17 20:54
Re: Water marks on King's Chamber shaft opening 275 Jon Ellison 19-Aug-17 22:04
Re: Water marks on King's Chamber shaft opening 267 DUNE 19-Aug-17 22:51
Re: Water marks on King's Chamber shaft opening 235 Origyptian 19-Aug-17 23:17
Re: Water marks on King's Chamber shaft opening 271 Origyptian 21-Aug-17 03:02
Re: Water marks on King's Chamber shaft opening 255 Jon Ellison 21-Aug-17 09:27
Re: Water marks on King's Chamber shaft opening 232 Origyptian 22-Aug-17 05:21
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Re: KC Watertight flooring 206 M. J. Thomas 20-Aug-17 17:26
Re: Water marks on King's Chamber shaft opening 252 Apap 18-Aug-17 21:43
Re: Water marks on King's Chamber shaft opening 254 Dr. Troglodyte 18-Aug-17 22:54
Re: Water marks on King's Chamber shaft opening 295 Apap 18-Aug-17 23:51
Re: Water marks on King's Chamber shaft opening 314 Origyptian 19-Aug-17 15:53
Re: Water marks on King's Chamber shaft opening 216 M. J. Thomas 20-Aug-17 00:55
Re: Water marks on King's Chamber shaft opening 184 Origyptian 20-Aug-17 04:15


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