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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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Water marks on King's Chamber shaft opening 1872 Romulus the 2nd 13-Aug-17 14:57
Re: Water marks on King's Chamber shaft opening 365 Thanos5150 13-Aug-17 15:58
Re: Water marks on King's Chamber shaft opening 350 Romulus the 2nd 13-Aug-17 16:14
Re: Water marks on King's Chamber shaft opening 335 Jon Ellison 13-Aug-17 16:25
Re: Water marks on King's Chamber shaft opening 288 Romulus the 2nd 13-Aug-17 16:32
Re: Water marks on King's Chamber shaft opening 242 Jon Ellison 13-Aug-17 16:41
Re: Water marks on King's Chamber shaft opening 222 Romulus the 2nd 13-Aug-17 16:38
Re: Water marks on King's Chamber shaft opening 243 Jon Ellison 13-Aug-17 16:52
Re: Water marks on King's Chamber shaft opening 228 Romulus the 2nd 13-Aug-17 16:58
Re: Water marks on King's Chamber shaft opening 265 Jon Ellison 13-Aug-17 17:06
Re: Water marks on King's Chamber shaft opening 206 Thanos5150 14-Aug-17 20:04
Re: Water marks on King's Chamber shaft opening 295 Thanos5150 13-Aug-17 18:31
Re: Water marks on King's Chamber shaft opening 255 Romulus the 2nd 13-Aug-17 21:24
Re: Water marks on King's Chamber shaft opening 243 Thanos5150 13-Aug-17 23:57
Re: Water marks on King's Chamber shaft opening 235 Romulus the 2nd 14-Aug-17 08:53
Re: Water marks on King's Chamber shaft opening 209 Jon Ellison 14-Aug-17 10:06
Re: Water marks on King's Chamber shaft opening 173 Romulus the 2nd 14-Aug-17 22:38
Re: Water marks on Queen's Chamber 247 Howard West 13-Aug-17 23:59
Re: Water marks on Queen's Chamber 237 Jon Ellison 14-Aug-17 00:40
Re: Water marks on Queen's Chamber 210 Howard West 14-Aug-17 14:59
Re: Water marks on Queen's Chamber 162 D-Archer 15-Aug-17 10:35
Re: Water marks on Queen's Chamber 175 Origyptian 15-Aug-17 13:41
Re: Water marks on Queen's Chamber 147 D-Archer 15-Aug-17 14:13
Re: Where the salt water came from 178 Howard West 15-Aug-17 14:44
Re: Water marks on Queen's Chamber 147 Origyptian 15-Aug-17 16:23
Re: Water marks on King's Chamber shaft opening 229 Thunderbird 14-Aug-17 00:48
Re: Water marks on King's Chamber shaft opening 187 gulsbo 15-Aug-17 16:24
Re: Water marks on King's Chamber shaft opening 200 Origyptian 15-Aug-17 16:55
Re: Water marks on King's Chamber shaft opening 144 Romulus the 2nd 16-Aug-17 22:46
Re: Water marks on King's Chamber shaft opening 201 M. J. Thomas 14-Aug-17 09:16
Re: Water marks on King's Chamber shaft opening 191 Merrell 14-Aug-17 11:34
Re: Water marks on King's Chamber shaft opening 185 Romulus the 2nd 14-Aug-17 12:03
Re: Water marks on King's Chamber shaft opening 152 M. J. Thomas 14-Aug-17 16:05
Re: Water marks on King's Chamber shaft opening 175 Origyptian 14-Aug-17 17:30
Re: Water marks on King's Chamber shaft opening 152 M. J. Thomas 14-Aug-17 19:00
Re: Water marks on King's Chamber shaft opening 156 Origyptian 14-Aug-17 20:33
Re: Water marks on King's Chamber shaft opening 145 M. J. Thomas 14-Aug-17 22:31
Re: Water marks on King's Chamber shaft opening 162 Jon Ellison 14-Aug-17 23:12
Re: Water marks on King's Chamber shaft opening 160 Origyptian 14-Aug-17 23:40
Re: Water marks on King's Chamber shaft opening 144 Jon Ellison 15-Aug-17 00:12
Re: Water marks on King's Chamber shaft opening 171 M. J. Thomas 15-Aug-17 00:45
Re: Water marks on King's Chamber shaft opening 190 Jon Ellison 15-Aug-17 07:54
Re: Water marks on King's Chamber shaft opening 146 Origyptian 15-Aug-17 13:36
Re: Water marks on King's Chamber shaft opening 153 Origyptian 14-Aug-17 23:25
Re: Water marks on King's Chamber shaft opening 127 Jon Ellison 14-Aug-17 23:39
Re: Water marks on King's Chamber shaft opening 174 cladking 15-Aug-17 00:59
Re: Water marks on King's Chamber shaft opening 182 Jon Ellison 14-Aug-17 12:51
Re: Water marks on King's Chamber shaft opening 156 Romulus the 2nd 14-Aug-17 14:13
Re: Water marks on King's Chamber shaft opening 193 Thunderbird 15-Aug-17 01:18
Re: Water marks on King's Chamber shaft opening 157 Origyptian 14-Aug-17 15:57
Re: Water marks on King's Chamber shaft opening 205 cladking 14-Aug-17 17:31
Re: Water marks on King's Chamber shaft opening 154 Jon Ellison 14-Aug-17 19:08
Re: Water marks on King's Chamber shaft opening 155 Origyptian 14-Aug-17 20:40
Re: Water marks on King's Chamber shaft opening 225 Thanos5150 14-Aug-17 16:37
Re: Water marks on King's Chamber shaft opening 216 Origyptian 14-Aug-17 17:52
Re: Water marks on King's Chamber shaft opening 205 M. J. Thomas 14-Aug-17 20:08
Re: Water marks on King's Chamber shaft opening 91 Origyptian 14-Aug-17 20:44
Re: Water marks on King's Chamber shaft opening 211 Thanos5150 14-Aug-17 21:00
Re: Water marks on King's Chamber shaft opening 180 Romulus the 2nd 14-Aug-17 22:41
Re: Water marks on King's Chamber shaft opening 162 Jon Ellison 14-Aug-17 22:57
Re: Water marks on King's Chamber shaft opening 148 Origyptian 14-Aug-17 23:32
Re: Water marks on King's Chamber shaft opening 164 Romulus the 2nd 15-Aug-17 12:42
Re: Water marks on King's Chamber shaft opening 204 Origyptian 15-Aug-17 14:29
Re: Water marks on King's Chamber shaft opening 156 Romulus the 2nd 15-Aug-17 15:55
Re: Water marks on King's Chamber shaft opening 173 Origyptian 15-Aug-17 16:38
Re: Water marks on King's Chamber shaft opening 139 Thanos5150 15-Aug-17 21:11
Re: Water marks on King's Chamber shaft opening 141 Romulus the 2nd 15-Aug-17 22:45
Re: Water marks on King's Chamber shaft opening 140 Jon Ellison 15-Aug-17 23:06
Re: Water marks on King's Chamber shaft opening 156 M. J. Thomas 15-Aug-17 15:36
Re: Water marks on King's Chamber shaft opening 166 Romulus the 2nd 15-Aug-17 16:04
Re: Water marks on King's Chamber shaft opening 183 Jon Ellison 15-Aug-17 16:26
Re: Water marks on King's Chamber shaft opening 151 M. J. Thomas 15-Aug-17 19:25
Re: Water marks on King's Chamber shaft opening 149 Origyptian 15-Aug-17 20:09
Re: Water marks on King's Chamber shaft opening 152 M. J. Thomas 15-Aug-17 21:53
Re: Water marks on King's Chamber shaft opening 148 Origyptian 15-Aug-17 22:14
Re: Water marks on King's Chamber shaft opening 147 Jon Ellison 15-Aug-17 20:26
Re: Water marks on King's Chamber shaft opening 144 M. J. Thomas 15-Aug-17 21:24
Re: Water marks on King's Chamber shaft opening 145 M. J. Thomas 15-Aug-17 21:27
Re: Water marks on King's Chamber shaft opening 142 Jon Ellison 15-Aug-17 22:57
Re: Water marks on King's Chamber shaft opening 156 M. J. Thomas 15-Aug-17 23:38
Re: Water marks on King's Chamber shaft opening 136 Origyptian 15-Aug-17 23:04
Re: Water marks on King's Chamber shaft opening 159 M. J. Thomas 15-Aug-17 23:53
Re: Water marks on King's Chamber shaft opening 157 Origyptian 16-Aug-17 00:49
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Re: Great Step ‘V-Shape’ Depression 153 Origyptian 16-Aug-17 00:47
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Re: Great Step ‘V-Shape’ Depression 166 Origyptian 16-Aug-17 03:38
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Re: Great Step ‘V-Shape’ Depression 164 Romulus the 2nd 16-Aug-17 22:17
Re: Great Step ‘V-Shape’ Depression 179 Romulus the 2nd 16-Aug-17 22:44
mise–en–scène 235 Dr. Troglodyte 16-Aug-17 23:29
Re: Water marks on King's Chamber shaft opening 209 Origyptian 14-Aug-17 23:05
Re: Water marks on King's Chamber shaft opening 170 Romulus the 2nd 15-Aug-17 11:34
Re: Water marks on King's Chamber shaft opening 165 Jon Ellison 15-Aug-17 12:16
Re: Water marks on King's Chamber shaft opening 175 Origyptian 15-Aug-17 13:46
Re: Water marks on King's Chamber shaft opening 176 Thanos5150 15-Aug-17 20:57
Re: Water marks on King's Chamber shaft opening 151 Origyptian 15-Aug-17 21:58
Re: Water marks on King's Chamber shaft opening 141 Apap 15-Aug-17 23:33
Re: Water marks on King's Chamber shaft opening 150 Origyptian 16-Aug-17 00:44
Re: Water marks on King's Chamber shaft opening 136 Thanos5150 16-Aug-17 01:13
Re: Water marks on King's Chamber shaft opening 149 Thanos5150 16-Aug-17 01:25
Re: Water marks on King's Chamber shaft opening 156 Thanos5150 16-Aug-17 01:31
Re: Water marks on King's Chamber shaft opening 147 Origyptian 16-Aug-17 03:47
Re: Water marks on King's Chamber shaft opening 187 Thanos5150 16-Aug-17 04:41
Re: Water marks on King's Chamber shaft opening 132 Origyptian 16-Aug-17 12:29
Re: Water marks on King's Chamber shaft opening 185 Thanos5150 16-Aug-17 14:30
Re: Water marks on King's Chamber shaft opening 161 Jon Ellison 16-Aug-17 13:01
Re: Water marks on King's Chamber shaft opening 221 Romulus the 2nd 16-Aug-17 21:03
Re: Water marks on King's Chamber shaft opening 169 eyeofhorus33 17-Aug-17 17:27
Re: Water marks on King's Chamber shaft opening 186 cladking 17-Aug-17 18:09
Re: Water marks on King's Chamber shaft opening 225 eyeofhorus33 17-Aug-17 19:12
Re: Water marks on King's Chamber shaft opening 179 cladking 17-Aug-17 21:43
Re: Water marks on King's Chamber shaft opening 174 Romulus the 2nd 17-Aug-17 23:18
Re: Water marks on King's Chamber shaft opening 139 Origyptian 18-Aug-17 16:42
Re: Water marks on King's Chamber shaft opening 156 Jon Ellison 18-Aug-17 16:56
Re: Water marks on King's Chamber shaft opening 152 Romulus the 2nd 18-Aug-17 19:44
Re: Water marks on King's Chamber shaft opening 133 Origyptian 18-Aug-17 20:04
Re: Water marks on King's Chamber shaft opening 143 Jon Ellison 18-Aug-17 20:44
Re: Water marks on King's Chamber shaft opening 134 Origyptian 18-Aug-17 21:07
Re: Water marks on King's Chamber shaft opening 124 Thanos5150 18-Aug-17 22:10
Re: Water marks on King's Chamber shaft opening 149 Apap 18-Aug-17 22:35
Re: Water marks on King's Chamber shaft opening 141 Jon Ellison 18-Aug-17 23:05
Re: Water marks on King's Chamber shaft opening 160 Thanos5150 18-Aug-17 23:30
Re: Water marks on King's Chamber shaft opening 149 Apap 18-Aug-17 23:32
Re: Water marks on King's Chamber shaft opening 132 Jon Ellison 18-Aug-17 23:49
Re: Water marks on King's Chamber shaft opening 133 Apap 19-Aug-17 00:03
Re: Water marks on King's Chamber shaft opening 165 Jon Ellison 19-Aug-17 00:08
Re: Water marks on King's Chamber shaft opening 76 Romulus the 2nd 22-Aug-17 10:00
Re: Water marks on King's Chamber shaft opening 76 Jon Ellison 22-Aug-17 11:21
Re: Water marks on King's Chamber shaft opening 99 Jon Ellison 22-Aug-17 11:39
Re: Water marks on King's Chamber shaft opening 101 Romulus the 2nd 22-Aug-17 21:06
Re: Water marks on King's Chamber shaft opening 116 Origyptian 22-Aug-17 12:02
Re: Water marks on King's Chamber shaft opening 68 Romulus the 2nd 22-Aug-17 21:15
Re: Water marks on King's Chamber shaft opening 67 Origyptian 23-Aug-17 04:01
Re: Water marks on King's Chamber shaft opening 126 Audrey 23-Aug-17 02:09
Re: Water marks on King's Chamber shaft opening 104 Origyptian 23-Aug-17 04:06
Re: Water marks on King's Chamber shaft opening 207 Jon Ellison 23-Aug-17 08:57
Re: Water marks on King's Chamber shaft opening 137 Jon Ellison 19-Aug-17 00:04
Re: Water marks on King's Chamber shaft opening 155 Origyptian 19-Aug-17 15:34
Re: Water marks on King's Chamber shaft opening 227 Apap 17-Aug-17 18:45
Re: Water marks on King's Chamber shaft opening 189 Romulus the 2nd 18-Aug-17 00:36
Re: Water marks on King's Chamber shaft opening 195 Jon Ellison 18-Aug-17 10:05
Re: Water marks on King's Chamber shaft opening 141 Origyptian 18-Aug-17 17:23
Re: Water marks on King's Chamber shaft opening 144 M. J. Thomas 18-Aug-17 18:22
Re: Water marks on King's Chamber shaft opening 166 Jon Ellison 18-Aug-17 19:12
Re: Water marks on King's Chamber shaft opening 170 Origyptian 18-Aug-17 20:23
Re: Water marks on King's Chamber shaft opening 158 Romulus the 2nd 18-Aug-17 19:49
Re: Water marks on King's Chamber shaft opening 133 Origyptian 18-Aug-17 16:50
Re: Water marks on King's Chamber shaft opening 174 Apap 18-Aug-17 18:05
Re: Water marks on King's Chamber shaft opening 135 Jon Ellison 18-Aug-17 19:20
Re: Water marks on King's Chamber shaft opening 133 Jon Ellison 18-Aug-17 19:58
Re: Water marks on King's Chamber shaft opening 144 Jon Ellison 18-Aug-17 20:28
Re: Water marks on King's Chamber shaft opening 133 Origyptian 18-Aug-17 20:15
Re: Water marks on King's Chamber shaft opening 163 Romulus the 2nd 18-Aug-17 20:16
Re: Water marks on King's Chamber shaft opening 161 Apap 18-Aug-17 22:02
Re: Water marks on King's Chamber shaft opening 136 Origyptian 19-Aug-17 15:10
Re: Water marks on King's Chamber shaft opening 85 Romulus the 2nd 20-Aug-17 21:59
Re: Water marks on King's Chamber shaft opening 171 DUNE 19-Aug-17 12:16
Re: Water marks on King's Chamber shaft opening 179 M. J. Thomas 19-Aug-17 20:54
Re: Water marks on King's Chamber shaft opening 159 Jon Ellison 19-Aug-17 22:04
Re: Water marks on King's Chamber shaft opening 155 DUNE 19-Aug-17 22:51
Re: Water marks on King's Chamber shaft opening 121 Origyptian 19-Aug-17 23:17
Re: Water marks on King's Chamber shaft opening 166 Origyptian 21-Aug-17 03:02
Re: Water marks on King's Chamber shaft opening 148 Jon Ellison 21-Aug-17 09:27
Re: Water marks on King's Chamber shaft opening 117 Origyptian 22-Aug-17 05:21
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Re: KC Watertight flooring 101 M. J. Thomas 20-Aug-17 17:26
Re: Water marks on King's Chamber shaft opening 153 Apap 18-Aug-17 21:43
Re: Water marks on King's Chamber shaft opening 155 Dr. Troglodyte 18-Aug-17 22:54
Re: Water marks on King's Chamber shaft opening 180 Apap 18-Aug-17 23:51
Re: Water marks on King's Chamber shaft opening 206 Origyptian 19-Aug-17 15:53
Re: Water marks on King's Chamber shaft opening 114 M. J. Thomas 20-Aug-17 00:55
Re: Water marks on King's Chamber shaft opening 127 Origyptian 20-Aug-17 04:15


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