Catching Gravitational Waves - with Sheila Rowan

[@nmarbletoe8210]

Very nice quality, thx! Wish the question period was included. Often that is my favorite part of a science talk.

[@TheRoyalInstitution]

Fear not, you can watch the Q&A here: kzbin.info/www/bejne/morGY6Wsh9-lrrc

[@glutinousmaximus]

There was a young lady called Bright, She could travel faster than light. She went out one day, in a relative way - And returned the previous night!

[@chriswhitt6685]

Not bad that 😂👍

[@Oodain]

i love the full lecture uploads, thank you.

[@BobNewport_Glassy]

A talented physicist, leading some cutting-edge international research; fascinating stuff.

[@cymoonrbacpro9426]

Bob Newport Big science = fake science= False signals

[@chriswhitt6685]

Fantastic and I'm learning something every time I watch these R I lectures. Thank you.

[@grotmx]

Great talk, thanks. But ffs if the speaker is describing something on a slide could you please show the slide at the same time!

[@erictaylor5462]

3:20 The gravity at a neutron star isn't even that high. I think that the gravity at the surface of a neutron star is something like 1011 times that of Earth.

[@aperson2730]

Very well presented talk about a fascinating subject. Congratulations 👏👏

[@philoso377]

Page 1:73 Gravity is too weak to hold matter together in an atom, leaving electromagnetic (EH) force and strong force are the dominating forces to hold subatomic particles together in an atom. Besides, that strong force is applied for the lack of understanding other than theory of what’s inside an atom, despite the fact that we have nuclear bomb and power stations. The energy released from a nuclear chain reaction is the difference (residual) energy between new smaller-lighter elements and old larger-heavier atom. Knowing the holding EH energy-force between new old elements allow estimation of the amount of energy available per atom.

[@rohitchat5538]

🙏🙏 thank you so much I listen minutely knowledge and learn what I do not know from expert's like you . 🙏🙏

[@morbid1.]

Great lecture and enjoyable to listen accent...

[@giacomomineo73]

I was there. So interesting even the second part with all the questions from the public.

[@JohnDoe_1237]

6:15 i heard once, that "you can't transmit information faster than lightspeed WITH light". i mean, if 'entangled particles' are true, then there is _something_ that moves faster that light, or not?

[@TyTang24]

Entangled particles were problematic because of that, but the rule is preserved because it doesn't change the fact that *information* cannot travel faster than the speed of light. The idea with entangled particles for communication is that you could take two entangled particles to the edges of the universe. Then, upon collapsing one of them, the other would immediately be known. However, this is only true for the observer who already determined the state of the particle. The other observer across the universe cannot and will not know what the state of their entangled particle is until the first observer communicates to them the state of the first particle. That information transfer is strictly limited by the speed of light.

[@taschke1221]

+Tim Tang well said.

[@nmarbletoe8210]

Try out this thought experiment. Two spaceships divide up a supply of entangled particles. The draw up a command list that tells each ship what to do depending on up/down measurements of the spin. They agree to look at one particle each minute, starting at a given time. The command list says that if A gets UP it fires lasers, and if B gets DOWN it fires lasers. If A gets DOWN and B gets UP, they maneuver closer to the enemy ship. The ships fly apart a long way, and converge to attack an enemy ship. The enemy detects the two ships when they are 1 light minute apart. It sees them fire lasers in a random pattern, but always exactly the same time! They also maneuver in synchrony. It looks like the two attackers have ftl communication. But they don't, in fact. It only works if they agree in advance on the command list. There's no way for one ship to send a ftl message like, "All my lasers are burnt out" or "retreat." They can only measure a particle each minute, and do what it says, and know the other ship is doing the same thing.

[@taschke1221]

***** it is.

[@taschke1221]

***** not out of date. Qm doesn't work like you think it does.

[@dirfgiS]

Amazing talk, amazing talker. I want more from her!

[@The_man_himself_67]

Thanks Sheila. Fascinating!

[@Heinrick192]

Damn, I was just about to go to sleep. Thanks for the upload!

[@TheRoyalInstitution]

Sorry about that. Sleep can wait, though ;)

[@Tjousk]

Indeed it can.

[@mrsmireff9370]

+The Royal Institution exact same situation here :D

[@robert8124]

They need to get these scientists a better lab set up in space. Great lecture and information...

[@MOHNAKHAN]

Very informative lecture... Thanks for uploading this...

[@b6191]

how fast do they travel and can we use them to surf / travel on?

[@bLedq]

What if you could dive into the gravitational wave....?

[@robert8124]

Gravity is a positive electrical current, attracted by a bodies ground. There is current travel from the top of our atmosphere straight down to the core of our planet. Our positive atoms are being pulled along with it as it passes through us. At a constant rate. That's why everything in this inviroment is pulled and falls at the same speed.

[@Satelitko]

What are gravitational weaves?

[@TyTang24]

They're created by gravitational pools.

[@DSGxTennessee]

The Scottish accent hooked me from the start lol great lecture

[@MrSidMan]

"The Scottish accent doesn't actually exist." and the Earth is flat. :P

[@bLedq]

If we received gravitational waves here on earth does it mean that the gravity of said black holes affects us? Does it mean they will slowly pull us towards themselves....?

[@veronicaeasterbrook7698]

Apparently, Newton was appalled by HIS OWN proposal that two objects could influence each other however far apart, without any visible connection, and suggested it would be madness to believe him. How would he view the notion that invisible space is bent by the same objects?

[@nissanpacific9793]

Can we please put LIGO sites on the Moon and Mars? Pls?

[@smartwombat9116]

Both the Moon and Mars have frequent quakes, which might make isolating a LIGO from the local noise too difficult. But an orbiting LIGO made from a constellation of satellites might be possible.

[@taschke1221]

Maybe the thing we are missing, is a bit of formula to adjust for time in relation to the matter of our universe. I.e. we have no law or theory of what time means to a part of a Galaxy that is closer to the black hole and one that is more towards the outer edge. We believe that what happens at the singularity is that time stands still, for the observer, if such a thing may be hypothetically fathomed, as the observer would enter this situation faster than the human brain could process. So we would infer that the outer edge of the galaxy considers time differently than the portion surrounding the black hole, even if only by the inverse square law.

[@smartwombat9116]

But there is no universal constant time. That's fundamental to relativity. Go check out other talks on this RI channel.

[@samus1421]

52:40 great job. thank you!

[@bz1222]

I thought you would weave golf into this somehow;) great lecture

[@erictaylor5462]

32:55 That one looks more like a car accident than a wild fire.

[@nmarbletoe8210]

The detector is essentially a single pixel. Need a bunch of them around the world so the world is a big compound eye :)

[@DrinkElectrolytes]

Did anyone else find it annoying that she kept transitioning to new points by using the words "and again"? You can't start a new idea by saying "Again" followed by something you haven't referenced yet right? Again, the idea of gravitational waves is mind blowing.

[@MuadDib1402]

I have to say I didn't notice. But again, what are electrolytes?

[@netional5154]

Same here, it looks like she has spoken about the subject often already and feels like she is repeating herself.

[@youtischia]

If that was a gravitational wave, why was only one found ? Shouldn't there have been a whole series of them ? How can you be so sure something else didn't cause the inferometer to register the blip ?

[@smartwombat9116]

Measurable wave, different from the waves that theory predicts. There's so much noise from local vibration that it's astonishing they detected those waves.

[@MrSidMan]

I see in the comments, the viewers are at the forefront of scientific debate.

[@scotshabalam2432]

Are we really living in a three dimensional universe or is our perception limited to 3D and as such our definition of the universe is limited to 3D artificial constructs of it? When deep discussions pop up about the fundamental laws of the universe I just wonder if we are limited to defining it based only on observation we can observe and mathematical equations we can comprehend that replicate but don't copy what the universe is actually doing.

[@joshinils]

how would you say would we have to describe something that we cant see, cant measure, cant put a number on? the mathematics will give in, theyre there. But why describe something that isnt there?

[@scotshabalam2432]

Because a limited perception may account for a limited understanding of the universe.

[@stewartsavage1123]

Time is of course relative, we are still experiencing the acceleration part of the explosion (Big Bang), this is why the Universe in all directions is not only expanding but speeding up.There you go.Universal expansion solved, can i have my Nobel prize please. Any other questions?

[@donmilland7606]

Stay away from Elephant Insurance unless you want an unfavorable credit reporting by it

[@lungflogger9]

she says "produce" gravitational waves but isn't it that these sources CAUSE waves to OCCUR in the gravitational field? I don't think this is nit picking. language needs to be very clear for non-PhDs like me to understand. am I wrong?

[@DisposableGorilla]

Do you realize what this means? Anyone? Anyone?

[@rodneymckay8860]

It can be used to provide the 1.21 gigawatts I need to power the flux capacitor, thus sending me back to future ?

[@DisposableGorilla]

+Rodney McKay lol. Awsome.

[@stewartsavage1123]

it means theoretically we could manipulate our perception of time, alter the effects of Black holes,move planetary bodies,build anti grav propulsion maybe,warp engines...Riding a gravity wave like a stellar surfer would be cool.

[@DisposableGorilla]

Yes, those things will be cool

[@aussiebloke609]

I'd scream "kawabunga, dude!" - but in space, nobody can hear you scream. :-D

[@rudolfmuradyan9179]

Supercomputer animation of the two black hole collision produce FAKE gravitational waves.

[@FatihErdemKzlkaya]

well, i guess you can assume that anyone who watches anything about gravitational waves knows what exponentiation is

[@MrAlRats]

Not necessarily. There may well be young people who have not yet been introduced to the notion of exponentiation. I know I would have watched these type of videos as a child if gravitational waves were first detected back then.

[@thebigpicture3480]

once you see that Mitsubishi logo

[@jaylee5835]

I am skeptical to found the gravitational wave news....Because there was and is too many other disturbe for measuring the wave...

[@jaylee5835]

***** Thank you for your detailed explain. 23 years... it's a very long time.. right? but long time don't guarantee the prove. I'm still skeptical, despite of your detailed explain. Even the moving of one little bird can disturb the LIGO. Right? This is the factor of my opinion. This reported LIGO's find likely even cheating to me in personally for more experiment budget for more accurate measuring. Likely gravitational lense of hundred of thousand of miles in the lagrange point. Probably, even this is just only prove the possibility of detecting of the G-wave. Just detecting, not the drawing or maping.

[@jaylee5835]

Ok. I'll try to understand.

[@GordDavison]

The Graviton has not been found yet. Gravity may well not be a force as the others described by the Quantum. Gravity could in fact be caused by time distortion. This time distortion causing an acceleration (dV/dt) and in turn making a force on objects with mass.

[@robert8124]

Pulses....

[@Pyrostar0]

her accent seem peculiar... is that a german accent? sorry, english isn't my birth language so i have trouble identifying accent. nice conference though! ;-)

[@xInSaNiTy2011]

I'm pretty sure she has a Scottish accent :)

[@3enjoy3]

Scottish

[@maan7715]

Scottish. That's why she mentions Glasgow many times during the lecture. :) It really is an interesting accent.

[@Pyrostar0]

Oh yeah of course. Should have figured that when she said Glasgow but I wasn't really sure. Thanks for al your answers guys. :)

[@dobbiessock1050]

Prf Rowan was born and brought up in Dumfries, Scotland she is my cousin.

[@donmilland7606]

" dahnee boooy" Oops that's Irish . . . "you can take our wives, but you can't take away our FREEHDUM"

[@AsratMengesha]

What gravitational wave is that they are talking about while gravity does not exist?

[@jamesohara4295]

There's no such things as Black holes, they're galactic Barycenters.

[@jamesohara4295]

***** You're gonna have to face it sooner or later, best you learn sooner.

[@jamesohara4295]

***** Yeah, I'll do that just as soon as the grown ups come home.

[@markjager8544]

So Newton is right , and Einstein wrong…got it!

[@whatthefunction9140]

a detector in italy and japan? No seismic activity there.

[@Bix12]

Scottish much?

[@worddunlap]

Flawed theory and too many will simply drink the koolaid refusing to admit they can't tell. Its like the story about the king with no clothes. People just nod and agree but the sad thing is the flaws don't require much to detect. People are too lazy to think.

[@TheWorldOfHarmony]

Boring...