MYSTERY OBJECTS
Re: MYSTERY OBJECTS
Is it part of an air-con unit?
I know I'm in my own little world, but it's OK... they know me here.
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Re: MYSTERY OBJECTS
Sorry Cathy but no.....
Stanley Challenger Graham
Stanley's View
scg1936 at talktalk.net
"Beware of certitude" (Jimmy Reid)
The floggings will continue until morale improves!
Stanley's View
scg1936 at talktalk.net
"Beware of certitude" (Jimmy Reid)
The floggings will continue until morale improves!
Re: MYSTERY OBJECTS
Looks like an entry/exit point for kitchen cooker hood ducting.
- Stanley
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Re: MYSTERY OBJECTS
Sorry Graham but no....
Stanley Challenger Graham
Stanley's View
scg1936 at talktalk.net
"Beware of certitude" (Jimmy Reid)
The floggings will continue until morale improves!
Stanley's View
scg1936 at talktalk.net
"Beware of certitude" (Jimmy Reid)
The floggings will continue until morale improves!
Re: MYSTERY OBJECTS
I know what it must be but I'll keep stum for now. Clue...Terry Pratchett would have loved this - in his Discworld books there were always things that were `darker than the blackest black'.
Nullius in verba: On the word of no one (Motto of the Royal Society)
Re: MYSTERY OBJECTS
Something to do with nanoparticles? Or black holes? Or Buckeyballs?
Re: MYSTERY OBJECTS
Reminds me of the time we used to (try) to do calcs using the Stefan–Boltzmann law. Starting with a black that absorbed all radiation then compared the heat absorbed from other less black thingies. Read not long ago that the labs had achieved another level of blackness that could be used on camera lenses or something like that. Space exploration come to mind.
- Stanley
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Re: MYSTERY OBJECTS
You're all getting there. Basically you are all right but not precise but I am giving it to all of you.
It's Vantablack a pigment coating developed in 2014 by Surrey NanoSystems. The name is an acronym for Vertically Aligned Nano Tube Array Black. The company says Vantablack absorbs 99.965 percent of light, which made it the blackest of all blacks at the time. (January 2021) (I think Peter knew it as well.)
Next one please?
It's Vantablack a pigment coating developed in 2014 by Surrey NanoSystems. The name is an acronym for Vertically Aligned Nano Tube Array Black. The company says Vantablack absorbs 99.965 percent of light, which made it the blackest of all blacks at the time. (January 2021) (I think Peter knew it as well.)
Next one please?
Stanley Challenger Graham
Stanley's View
scg1936 at talktalk.net
"Beware of certitude" (Jimmy Reid)
The floggings will continue until morale improves!
Stanley's View
scg1936 at talktalk.net
"Beware of certitude" (Jimmy Reid)
The floggings will continue until morale improves!
- PanBiker
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Re: MYSTERY OBJECTS
Black is always difficult to reproduce in any form as it doesn't actually exist! Black is merely the absence of all light so cannot be reproduced by artificial means. Blacks are usually extremely dark blue or leaning to the purple end of the spectrum. It's all an optical illusion. As demonstrated above some are better attempts than others.
Ian
Re: MYSTERY OBJECTS
That was an interesting one Stanley.
Gloria
Now an Honorary Chief Engineer who'd be dangerous with a brain!!!
http://www.briercliffesociety.co.uk
http://www.lfhhs.org.uk
Now an Honorary Chief Engineer who'd be dangerous with a brain!!!
http://www.briercliffesociety.co.uk
http://www.lfhhs.org.uk
Re: MYSTERY OBJECTS
On a more technical level what we perceive as black is something that absorbs all our visible light radiation and doesn't reflect any particular wavelength (colour). Our eye balls are not very good at this quantitative analysis so we rely on instruments for a better judgement.
Can't understand how Black Holes can still radiate but I suppose not many people can.
Re: MYSTERY OBJECTS
It's that nasty quantum stuff again!
`Why Black Holes Emit Light: A Simplified Explanation of the Physics Underlying the Hawking Radiation'
LINK
Nullius in verba: On the word of no one (Motto of the Royal Society)
- Stanley
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Re: MYSTERY OBJECTS
What exactly is it.
Stanley Challenger Graham
Stanley's View
scg1936 at talktalk.net
"Beware of certitude" (Jimmy Reid)
The floggings will continue until morale improves!
Stanley's View
scg1936 at talktalk.net
"Beware of certitude" (Jimmy Reid)
The floggings will continue until morale improves!
Re: MYSTERY OBJECTS
A cannon ball or a musket ball depending on its size?
Re: MYSTERY OBJECTS
A wholemeal loaf?
Nullius in verba: On the word of no one (Motto of the Royal Society)
- Stanley
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Re: MYSTERY OBJECTS
Kev and China are right, it's a lump of iron, but very special iron. Go a bit further. (Clue, it isn't strictly iron....)
Stanley Challenger Graham
Stanley's View
scg1936 at talktalk.net
"Beware of certitude" (Jimmy Reid)
The floggings will continue until morale improves!
Stanley's View
scg1936 at talktalk.net
"Beware of certitude" (Jimmy Reid)
The floggings will continue until morale improves!
Re: MYSTERY OBJECTS
Is it a steel ball bearing that is well past its sell-by date?
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Re: MYSTERY OBJECTS
No, far older than that.
Stanley Challenger Graham
Stanley's View
scg1936 at talktalk.net
"Beware of certitude" (Jimmy Reid)
The floggings will continue until morale improves!
Stanley's View
scg1936 at talktalk.net
"Beware of certitude" (Jimmy Reid)
The floggings will continue until morale improves!
Re: MYSTERY OBJECTS
A nickel-iron meteorite?
Or a marcasite (iron sulphide) nodule?
Or a marcasite (iron sulphide) nodule?
Nullius in verba: On the word of no one (Motto of the Royal Society)
- Stanley
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Re: MYSTERY OBJECTS
Kev has it, It's a cake of Wootz, the steel that was produced in small quantities by skilled smiths in the Far East long before we made it common in the Industrial Revolution.
Next one?
Next one?
Stanley Challenger Graham
Stanley's View
scg1936 at talktalk.net
"Beware of certitude" (Jimmy Reid)
The floggings will continue until morale improves!
Stanley's View
scg1936 at talktalk.net
"Beware of certitude" (Jimmy Reid)
The floggings will continue until morale improves!
Re: MYSTERY OBJECTS
Wotz Wootz?