It's highly unlikely that the colour pink would show up under a sodium street light.

[Carana]

Mercury is questioning how far away you could be before you can't see  pink any more.

I was roughly as far away as JT described in her rog.

There were two pavements between me and the object and a lane in which two cars could pass. Aside from this orangey lighting, I could just distinguish between the sky and the outline of objects in my path (including the outline of buildings).

Make of that what you will, I was just trying to satisfy my own curiosity.

[Carana]

your distance compared to jane tanners

JT couldn't be sure as to an accurate distance. I was 2 pavements away with a small lane and little natural light left. My gesstimate would be that I was 7-8 metres from the cloth object.

[Robittybob1]

It's not about to rise at the time of the Tannerman sighting.  It was 45 minutes off and still had Boavista to overcome.

It's not influencing the Smithman sighting for the simple fact that took place between two multi-story blocks of flats.

Does it get brighter in NZ the farther the sun is down?  We don't have the Southern Cross in Luz.

As far as I know Portugal and New Zealand are just about antipodes.  So we have similar long dusk periods in summer.  Down South you can still see without torches at 10:00 PM.  OK we do get more light of the Milky Way as well. But up North it might be light enough to see at 9:00 PM.  I've heard the closer you get to the equator the cut off between day and night is more sudden.

[Alice Purjorick]

http://www.fullspectrumsolutions.com/cri_explained.htm

http://www.edisontechcenter.org/SodiumLamps.html

[mercury]

JT couldn't be sure as to an accurate distance. I was 2 pavements away with a small lane and little natural light left. My gesstimate would be that I was 7-8 metres from the cloth object.

Yes you might be right
Number 4 on this drawing is where she was when seeing the man...whats the distance?

[jassi]

Yes you might be right
Number 4 on this drawing is where she was when seeing the man...whats the distance?

http://www.mccannpjfiles.co.uk/P1/01_VOLUME_Ia_Page_50.jpg

Re this map - if one was exiting from 5a excitedly with Madeleine, would one not go diagonally across the road from 7 to  8, rather than from 7 to 5 and then to 8 ?

[Robittybob1]

Re this map - if one was exiting from 5a excitedly with Madeleine, would one not go diagonally across the road from 7 to  8, rather than from 7 to 5 and then to 8 ?

When you've got a child in your arms and you are trying to get away you wouldn't want to be carrying it too far.

[sadie]

http://www.fullspectrumsolutions.com/cri_explained.htm

http://www.edisontechcenter.org/SodiumLamps.html

Thank you Alice

http://www.fullspectrumsolutions.com/cri_explained.htm

http://www.fullspectrumsolutions.com/images_templ/graphics/heather1.jpg


http://www.fullspectrumsolutions.com/images_templ/graphics/heather2.jpg


The blurb talks about Monochromatic light, yet I swear that I can see pink lips in the sodium light image.

The same as we could see pink colour in one of the images that shining posted

[Carana]

http://www.fullspectrumsolutions.com/cri_explained.htm

http://www.edisontechcenter.org/SodiumLamps.html

What cameras record and human brains register aren't necessarily identical, however.

I didn't even bother to take a camera with me earlier as I knew that it wouldn't reflect what I would register as recognisable colours.

That doesn't mean that one person's perception of colour under various lighting conditions will always be identical, let alone accurate.

All I can say is that I could identify basic colours as distinct from each other. If I were to be presented with a fine array of shades of any particular colour and had to rely on memory.... I don't know, I haven't tried to experiment that far.

[sadie]

What cameras record and human brains register aren't necessarily identical, however.

I didn't even bother to take a camera with me earlier as I knew that it wouldn't reflect what I would register as recognisable colours.

That doesn't mean that one person's perception of colour under various lighting conditions will always be identical, let alone accurate.

All I can say is that I could identify basic colours as distinct from each other. If I were to be presented with a fine array of shades of any particular colour and had to rely on memory.... I don't know, I haven't tried to experiment that far.

Am interested, do you see pink lips on this image Carana, like i do?

http://www.fullspectrumsolutions.com/images_templ/graphics/heather2.jpg

[slartibartfast]

Thank you Alice

http://www.fullspectrumsolutions.com/cri_explained.htm

http://www.fullspectrumsolutions.com/images_templ/graphics/heather1.jpg


http://www.fullspectrumsolutions.com/images_templ/graphics/heather2.jpg


The blurb talks about Monochromatic light, yet I swear that I can see pink lips in the sodium light image.

The same as we could see pink colour in one of the images that shining posted

They human mind will see what it expects to see, you know lips are pink so the brain fills in the missing info. When you are told something happened in the past that you witnessed your memory can fill in the gaps.

[G-Unit]

Thank you Alice

http://www.fullspectrumsolutions.com/cri_explained.htm

http://www.fullspectrumsolutions.com/images_templ/graphics/heather1.jpg


http://www.fullspectrumsolutions.com/images_templ/graphics/heather2.jpg


The blurb talks about Monochromatic light, yet I swear that I can see pink lips in the sodium light image.

The same as we could see pink colour in one of the images that shining posted

If the lipstick had any orange pigment in it that could explain why you see it. At least the pics tell us that the blue crecheman pyjamas would have appeared as white under those street lights.

I posted the other images, by the way, not SIL.

[Robittybob1]

If the lipstick had any orange pigment in it that could explain why you see it. At least the pics tell us that the blue crecheman pyjamas would have appeared as white under those street lights.
...

They could do, the blue hat looks orangey which maybe interpreted as white.

[G-Unit]

They could do, the blue hat looks orangey which maybe interpreted as white.

Well, it was by Jane Tanner and co. The white flowers below have a yellow appearance under sodium light.  It also suggests that red might appear as pink, so the orange band on the crecheman pyjamas may have looked the same.



Yellow light from an incandescent source, fitted with a yellow filter (left) ,allows fairly good colour perception, but under the monochromatic yellow light from a low-pressure sodium lamp (right), it is impossible to distinguish between colours.

The colour rendering index (Ra for Rendition absolute) is given below for a selection of much-used lamp types:



For values below 25, the colour rendering index has no practical meaning. As a matter of fact because of the calculation method used – it can even take negative values!
http://www.bonjour-odyssey.com.sg/resources/colour-rendering/

[jassi]

Under low pressure sodium light most colours are distorted and if you didn't know what a colour was in advance, it would be difficult to accurately determine it.

Dyes used in clothing can be particularly deceptive as they are mostly a combination of dyes mixed to give a certain shade in 'normal' light and these can present very differently under different lighting conditions - eg sunlight versus strip light.