Black hole sun – Forumite.site

This topic has 7 replies, 5 voices, and was last updated 8 years, 8 months ago by Bob Williams.

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June 27, 2017 at 10:03 am #9527
keith with the teef
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@thinktank
Forumite Points: 0
No not a bad pop video.

But scientits have created the brightest light. It uses only one colour and so is laser and not white as some x-rays.

Obvoiusly light helps ou to see, notice how the print on a book jumps out in broard daylight.

http://www.independent.co.uk/news/science/billion-suns-brightest-light-ever-earth-scientists-x-ray-nebraska-a7808331.html

For sure with this tech it should help chip makers be able to see what they are making and in intels case make chips with hyper threading that works properly.
June 27, 2017 at 11:01 am #9532
Spedley
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@spedley
Forumite Points: 2
Intersting, didn’t realise it hadn’t been done before. Strangely I had actually wondered what happens when two photons bounce at the same time! 🙂

i7 4790s / 8GB / 480GB SSD / GTX 980 / 34" UltraWide : i3 4170 / 8GB / 480GB SSD / GTX 770 / 24" Samsung : i3 4130 / 8GB / 500GB Spinner / GTX 1050 / 23" Acer : Q9550 / 8GB / 1TB Spinner / GTX 580 / 22" Acer : i7 720QM / 8GB / 1TB+2TB+500GB Spinners (server) : i5 4570 / 8GB / 60GB SSD / 1TB / GeForce 210 / 22" Dell It's getting warm in here!
June 27, 2017 at 11:21 am #9535
Ed P
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@edps
Forumite Points: 39
Spedley wrote:

Intersting, didn’t realise it hadn’t been done before. Strangely I had actually wondered what happens when two photons bounce at the same time!

“…The light’s coming off at different angles, with different colours, depending on how bright it is.” ”

I guess it becomes difficult to visualise if you think of photons as old-school particles. If however you think of them as wave packets with intensity distributions then scattering and Moiré interference patterns from collisions are almost inevitable. Both the scattering and any interference patterns are going to be highly dependent on the surface of the object hence the comment about tiny cracks being visible.
June 27, 2017 at 12:36 pm #9541
Ed P
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@edps
Forumite Points: 39
I’ve been guilty of loose terminology again!.

I should have said ‘If however you think of them as wave packets with ENERGY distributions…’

As frequency is proportional to energy this implies that even a ‘single’ frequency lasered photon consists of many frequencies however the distribution of frequencies is such that the probability of finding a place in this energy distribution which departs from the average value is very low, In the case where a very large number of such photons is emitted (i.e. very high energy) then the probability becomes finite and other frequencies exist within the distribution.

Unlike Einstein I do believe that ‘God’ plays dice!
June 27, 2017 at 3:39 pm #9555
Bob Williams
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@bullstuff2
Forumite Points: 0
Another use for Light: https://tinyurl.com/mzyw6m9

Light Sailing.

More details, including proposed launch date for Lightsail 2: https://tinyurl.com/ycojnvrn

SF Lives!

When the Thought Police arrive at your door, think -
I'm out.
June 28, 2017 at 11:29 am #9585
Wheels-Of-Fire
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@grahamdearsley
Forumite Points: 4
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June 28, 2017 at 4:22 pm #9599
Ed P
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@edps
Forumite Points: 39
Please translate the Leet Graham. I recognize the symbols but try as I might I cannot transliterate them into English.
June 28, 2017 at 6:15 pm #9607
Bob Williams
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@bullstuff2
Forumite Points: 0
Ed P wrote:

Please translate the Leet Graham. I recognize the symbols but try as I might I cannot transliterate them into English.

Had to look up “Leet” Ed, to know that it is a code. But yes, Graham, please translate for those of us who never dealt with it.

When the Thought Police arrive at your door, think -
I'm out.
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