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Spinning Black Holes | The World In Uv - At Up-Tube.com

Spinning Black Holes The World in UV 4 months ago   10:14

Veritasium
A pulsing black hole in the centre of a distant galaxy sheds light on black hole and galaxy formation. How fast are black holes rotating and how does that rotation change over its life-span?

Huge thanks to Prof. Geraint Lewis and study author Dr. Dheeraj Pasham.

A loud quasi-periodic oscillation after a star is disrupted
by a massive black hole
https://ve42.co/pasham

Special thanks to Patreon supporters:
Donal Botkin, James M Nicholson, Michael Krugman, Nathan Hansen, Ron Neal, Stan Presolski, Terrance Shepherd

Music from http://epidemicsound.com "Colorful animation 4" "serene story 2" "To the stars 01" "Black Vortex

Animations by Alan Chamberlain and courtesy of NASA

Comments 3456 Comments

Dire Darlings
Are you suppose to be at Hogwarts
Big Chully Bun69
Could a black hole be a four dimensional object casting a three dimensional shadow.
The Most Interesting Man On Youtube
What if Black Holes are actually Dark Matter Tornadoes ??
Coalition of Rob
So if this thing is 290 million light years away, does that mean the black hole ate the star 290 million years ago?
Andrey Lebedenko
If rotating mass is pulled all the way down to the singularity, shouldn't it angular momentum become infinite?
Andrey Lebedenko
Say a space traveler orbits black hole 1m away from it's event horizon. When he will look into the window, what will he see? Say the window looks away from the black hole.
Mishanya Mishanya
The Isco seems to be a Roche limit. Am I right?
Rabie Abd El-Samad
excellent videos man as always
please keep it going
Furnace Furn
So to study black holes we must look at anything but light?
sameer sayyed
Is it called pulsar
Jay Farina
The scientists arent making anything up. They're just clueless as to the mechanism which cause a black holes existence. Black holes don't feed on anything first off. Secondly, they spin and do not suck. Unfortunately this means nothing is violently ripped apart and swallowed up. Spectroscopy is also completely misinterpreted by scientists. a Although very thorough, and well explained, this explanation is completely off. Through no fault of his own of course. The blame lies with his professors.
james pong
I need naked singularity in my life
Vitold Voytekunas
Is 2:45 real satellite footage...
Rayagoldendropofsun Sunlightelectrorays
It's all bab shameless science.
Yolo2hell 20
If it was millions of light years away, how were we seeing it every 131 seconds then? It would be having to go faster than the speed of light
Neventual
Is Earth gradually being pulled into the supermassive black hole of our milky way?
ANANDHU MA
How can we measure the the mass of the Black Holes, since we don't know about the gravity of it, may be gravity will be infinity???
krishna CoC
If twp black holes of exact opposite spin merge, does the spin cancel each other and become stellar black hole?
忻鼎康
白矮星繞黑洞旋轉的示意圖好像是錯的,理論上來說應該能看到整個“白矮星繞黑洞公轉”的軌跡
Eλένη Μ.
While watching the video,in the beginning I said to my self physics is not so difficult after all...and then the math comes in...
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The World in UV Spinning Black Holes 4 months ago   11:13

UV cameras expose a hidden world and reveal the incompleteness of our perception
The Physics Girl looks at sunscreen: https://up-tube.com/upvideo/TEQ-kiyuTZp
How to make sunscreen from scratch: https://up-tube.com/upvideo/yZKNL5S28Y0

In summary, ultraviolet light interacts differently with matter for a number of reasons:
1. Some pigments selectively absorb UV so they may appear white in the visible but dark in the UV. The pigments usually dissipate the UV energy as heat, though the breaking of bonds can also occur.
2. Fluorescent molecules absorb UV light and re-radiate that energy as visible light. This makes them look dark in the UV but glowing under black light.
3. Ultraviolet light scatters more than visible light because the wavelength is shorter and Raleigh scattering is proportional to the reciprocal of wavelength to the power of four.

Special thanks to HHMI BioInteractive for their awesome animations of melanocytes and how the melanin in melanosomes protect your DNA. To see the full video explaining how we get our skin color, check out: https://up-tube.com/upvideo/IP0GY_yLYz8

Special thanks to Patreon supporters:
Donal Botkin, Michael Krugman, Jeff Straathof, Zach Mueller, Ron Neal, Nathan Hansen, Yildiz Kabaran, Terrance Snow, Stan Presolski

References:

Overview of main UV effects:
Visualizing Rayleigh Scattering through UV Photography
https://journals.ametsoc.org/doi/pdf/10.1175/BAMS-D-14-00260.1

Arctic animals are photographed in the UV to increase visibility and get an accurate count:
Lavigne, D. (1976). Counting Harp Seals with ultra-violet photography. Polar Record, 18(114), 269-277. doi:10.1017/S0032247400000310

Absorption spectrum of melanin: http://www.cl.cam.ac.uk/~jgd1000/melanin.html

"The spectroscopy of human melanin pigmentation," by N. Kollias. In: Melanin: Its Role in Human Photoprotection, pp. 31 - 38. Valdenmar Publishing Co. (1995).

"Optical properties of human sclera, and their consequences for transscleral laser applications," by A. Vogel, C. Dlugos, and R. Nuffer, Lasers in Surgery and Medicine 11(4), pp. 331 - 340 (1991).

"The incidence and time-course of latanoprost-induced iridial pigmentation as a function of eye color," by P. Wistrand, J. Stjernschantz, and K. Olsson, Survey of Ophthalmology 41(S2), pp. S129 - S138 (1997).

Music by Epidemic Sound: https://www.epidemicsound.com "Spring Moods 5"