WSU Master Class: How Black Holes Became Real with Priyamvada Natarajan
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- čas přidán 13. 07. 2024
- Astrophysicist Priyamvada Natarajan explains the science of supermassive black holes from their birth to how they impact the development of their galaxies. Explore the cutting-edge research being done to better understand these phenomena. #WorldSciU
This lecture was recorded on June 3, 2016 at the World Science Festival in New York City.
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As usual, a nice lecture from WSU, thank you :)
Thank You. Pray you all are safe today and Now most appreciate your contribution to humanity. Beautiful. Thank you
Ty, Priyamvada.
Always admire Physicists
Nowhere in the net i could find the origination of black hole......i am and Indian and a Bengali
I have heard of the black hole of Calcutta
6th from Maui🌴🌴👍🍍, always love your Video's...
thanks for reminding us about the timegap with lightspeed. So in reality we don't really know what things look like "right now".
7:13 I think kit is wrong since if the escape velocity of the black hole is the speed of light the light can come out of the black hole, but light cannot come out of the black hole since we cant see it. So I think the escape velocity of a black hole is more than the speed of light.
Great Point my friend. Maybe the density has an effect on photons? I think they say a BH stems from a singularity. I don't know what that means but might be a reason?
@@vinnyvdalidemonet8527 yes my friend, i think they are correct but my question is, is the escape velocity of the black hole more then the speed of light, i think it is
Yes, I understand/understood your great question. They have said that there are speeds faster than light. Just difficult to measure by us, thus far. This makes your question valid. I'm sure science will give us our answer in the near future. I hope. I believe you are young so keep asking those great questions so we can search for the answers. Thank you, my friend.
@@vinnyvdalidemonet8527 yes jimmy sir thanks a lot for understanding my point, yea i am 14 . but then 1 more question comes up and that is according to einsteins theory of general relativity nothing can travel faster then the speed of light which is 299,792 km/s and light is the universal speed limit. then how can they find something that is faster than the speed of light ? or even see something fatser than the speed of light. onces again thanks for ur time !!
Im not sure exactly it has something to do with the universe acceleration. I have heard that "things" galaxies, stars etc. Are expanding faster & faster & out of our view/sight (faster than light) at the edge of deep space. Not sure whom it was or where I came across this info. However, i am sure of what was being inferred. Give it time if it was true it will become more wide spread? I appreciate your time and interest too, Harshil. If i come across anything similar or in reference to the question, i will be sure to share it with you. Age 14 good for you & your young mind. Keep it up & good luck pursue your dreams 👍
My suggestion is that light might be bended by the in push from around the cosmos and the out push from the out put from the star that when both in and out push neutralize forming an UFO air craft.
The mass of a black hole could be:
1. Concentrated at the centre
2. Distributed in a radially symmetric manner below the event horizon
3. Distributed in a radially symmetric manner on or above the event horizon (but below the observer)
From the outside looking in, each of these cases is indistinguishable from the others, but #3 is the only one that doesn't involve crossing the event horizon, which is impossible from an external point of view. Which do you suppose corresponds to reality?
I postulate there is a reason for our perceptions as they apply to the accretion disc, asteroid belt, kuiper belt, ecliptic plane, etc. Our microwave background is our event horizon.
My self dont think so it is the ultraviolet level after white middle circle if you see our cosmos as 2 circles where we are inside.
Correction from above the universe or a system could be seen as 2 circles where one is inside the other just like here in our solar system where the inside rocky side one that is the one that is inside the outer gaseous planets that make the outer circle, where the inside circle is half the diametter of the out side one that as well feets in gravity if you count the gravity of the 4 rocky planets you get 26 M/S 2 while the gaseous ones give us 52 M/S2 where 52 is double of 26.
Every mass, no matter how small or large, has an event horizon. The smallest possible gravitational black hole is presumably the Planck length, but is that the radius, diameter or circumference? I think it's the diameter because it's analogous to the size of a resonant cavity. Whatever the case, it can be used to deduce the smallest possible mass. What is the significance of that, if any?
We see that the galaxie center of many galaxies throws out light as well the so called black holes dim up and down.
My suggestion is that what is in all galaxies is the union of all stars that give out an OUT PUT ELECTROMAGNETIC STREAM OF MATTER-LIGHT perpendicular to the galaxie.
Beautiful outfit!
Legs
damn science, i wish my small brain could have comprehended to most of what she said and contribute to the search for the truth... science, art, philosophy, music are great domains for a person to work on
🙏🏻🙏🏻🙏🏻🙏🏻
Mam you are really pretty....you should have been a hollywood actress....love from india❤...but i think being a scientist is also cool❤
What if the big bang is just when our universe collided with a neighboring universe in the multiverse and the velocity of expansion is the result of the push v. pull being affected along with dark matter and the volume?
How do black holes get bigger if whatever falls in them becomes infinitely small?
@Robert Hunt so the singularity doesnt ever get bigger? Only the event horizon? Hmmm thats so confusing. Does the event horizon have any mass? Or is it just the singularity that gets it?
@@waylayin6159 welcome to theoretical physics and all is splendor! lol I'm joking. it is fun to speculate on all these things isn't it!? i love it! our imagination is the event horizon!
@@robertgreenwood2258 i have so many questions!!! Do black holes have a limit to how big they can get? I know that can get absolutely massice but is there some kind of firewall that stops them from growing to the size of a galaxy or somethibg ? Lol could they get so big they collapse on themselves again?!
@@waylayin6159 They stop growing when they run out of stuff to eat? I think they can starve and evaporate through hawking radiation.
@@EricWilliamsCG i was just wondering though if they kept "eating" if there was a limit to their size
At 39:38 She speaks of the unspeakable word.
Ok at 38:33 in the Nasa video we can see that the gas flow in left flow so tell me why the stars near the BH they dont folow same orbit as they should? some go left some go right, some go up some go down, if some go to a corner some others go the oposite why is that?
30:55 She said the center of the milky way is 70k light yrs away from us. It's half that distance.
Or she said it's 17k LY's away. I'ts double that.
Blame it on the spherical cows!
And yet she’s up there and your in a basement. Go figure.
1753
Fuji Apple
Our observable universe is decreasing not increasing?
Perhaps because the increasing expansion pushes galaxies too far away to see. Eventually (if we were still here) we will see nothing beyond the milky way, and maybe a few other local galaxies.
@@homebrew010homebrew3 exactly my point, the lady in question intimated that the more time passes the more we will see, it is quite the opposite in terms of the OU as you rightly point out.
@@homebrew010homebrew3 not withstanding our galactiy imminent collision with andromeda!
If you see that the cosmos grow as groups like atoms make stars, stars make galaxies, galaxies make clusters of galaxies, clusters of galaxies make super clusters of galaxies and so on so each level all elements are interconnected one to the other so is not hard to see billions of stars out put united at one point.
Karl Schwarzschild developed the idea for black holes from relativity's equations in 1916, just a year after Einstein published his theory. For this reason, early physicists studying these bizarre objects often called them “frozen stars.” Today, we know them by the name first used by Wheeler in 1967: black holes. (From Astronomy.com). Indian colleagues tend to make themselves bigger and smarter than they really are. She lied about the origin of the name.
Wheeler wasn't the first to use the term "black hole", he merely popularised it. She isn't lying about the origin.
Search properly. It's true. Indians don't tend to make themselves smarter and bigger, they are smarter and bigger 😌.
Shouldnt black holes have positive , negative and neutral sides sinse they say information is not lost?
As you know stars near the BH get way to close why then such stars dont clump up one into another? ssme stars not all of them get the kick up in speed at right same place spetialy an orange one that speeds up far away up from the spot way out to the right why is that?
@Robert Hunt Cant you see that they repeal in some cases when they get to close? should not be the oposite?
@Robert Hunt Have you notice the orange star that jumps up in speed way up far to the righ? if there is more room then the BH is out by your words due that the distance from the BH spot is much, but much gratter than star look maybe more than 3 times the space from stars that get to close so can you be kind to give me an explanation of this event?
Why not plasma to feed the BH? gas is just a very light remanent of burned mater, we see that there are rivers of plasma conecting all the cosmos. - Plasma is a neutral matter to me.
My suggestion is that as you zoom to any where you zoom in to the present.
Except the math they keep using is faulty, first derivative error faulty. Like Calculus 100 failing grade. By the physics she's trying to use to describe them they ceased to exist the moment the described conditions occured. Remember that time they found a black hole right where they expected one at the center of our galaxy then discovered the center of our galaxy was 30° off to the side? Can you say "BULL-SHIT"?
An undergrad can give better presentations
Your Calcutta, black hole analogy is utter nonsense. Have some self respect and respect for science please.
It is true.
Relax. She made one reference at the beginning and it's true.
What a great contribution.
I don’t like to watch videos that begin with a false premise.
Cute, perhaps, but highly illogical captain.
Robert Hunt - maybe I should.