The Royal Institution
The Royal InstitutionFrom Boltzmann to quantum theory, from Einstein to loop quantum gravity, our understanding of time has been undergoing radical transformations. Carlo Rovelli brings together physics, philosophy and art to unravel the mystery of time.
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Watch the Q&A: https://youtu.be/NXcu0BlbTrM
Time is a mystery that does not cease to puzzle us. Philosophers, artists and poets have long explored its meaning while scientists have found that its structure is different from the simple intuition we have of it. Time flows at a different speed in different places, the past and the future differ far less than we might think, and the very notion of the present evaporates in the vast universe.
Carlo Rovelli is a theoretical physicist who has made significant contributions to the physics of space and time. He has worked in Italy and the US, and is currently directing the quantum gravity research group of the Centre de physique théorique in Marseille, France. His books ‘Seven Brief Lessons on Physics’ and ‘Reality Is Not What It Seems’ are international bestsellers translated into forty-one languages.
This talk and Q&A was filmed in the Ri on 30 April 2018.
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26 Comments
Anonymous
02/18/2025 - 6:04 PMi dont know how, but i can understand lot better at 2 x speed thatn 1.5 or 1 ay too slow. lol trainning
Anonymous
02/18/2025 - 6:04 PMOH, i know. how i got there, i assume Eientin was Right, and Back proprogated from Eientsins Shazping, universe, with, Light as INfo. data, Crisper /lsd guy, its sections. and obiousely thisgs are affectd by scales as similar in state , of quatum flux. entropy say it dosnt diaaspear, and it dsont seems so, it chages state and scale.
Anonymous
02/18/2025 - 6:04 PMi thought of this becasue biologically, you have to make a decions and action, you cant over think, thats the death of many animals or speicies, i asume.
time with , Scale, ad you are riding a interdementional water ride and it makes feelings and others we percive x data x perspective. x scale x ? = reality and time.
i said the same thing before, i must of see in some where. becasue it so similar, maybe, Chat gptplus has guied me to his idas, i was just talking chat gpt, i got lot of the similar.
trying to get a work about formula, for math, thats the end all.
for some reason i hthink i am close.
lol
Anonymous
02/18/2025 - 6:04 PMall lights have data how about color lights. chat gpt lol
@tulpas93
02/18/2025 - 6:04 PMMagnificent! Bravo! 🎉
@chosenmachine2009
02/18/2025 - 6:04 PMTime Reverse Motion experiments are the wrong approach for distinguishing past from future. A classical observer could tell which one is it.
@induchopra3014
02/18/2025 - 6:04 PMHeat and time are related. More heat can speed up time
Cold can slow down time.
Gravity is force of masses. Big and small. Hot or cold.
@induchopra3014
02/18/2025 - 6:04 PMThere is no, now
Time is itself relative
@rost6583
02/18/2025 - 6:04 PMBut if the ‘now’ is the same delay for both parties, it is ‘now’
@flodehaan3935
02/18/2025 - 6:04 PMWonderful!
@nameless-yd6ko
02/18/2025 - 6:04 PM'Time' is an illusion that exists in/as 'thought'!
'Thought' is Ego (Thought is Duality, mortality, death)!
Thus we 'identify' with the presentations of the Ego (autonomous self) and buy into 'life' and 'death'. Mortality!
'Time' is not inherent in Reality other than that.
Reality is Holistic, not linear;
"The Laws of Nature are not rules controlling the metamorphosis of what is, into what will be (ie; Karma). They are descriptions of patterns that exist, all at once… " – Genius; the Life and Science of Richard Feynman
All 'eternity' at once; Here! Now!!
Holistic.
Eternal doesn't mean all the moments strung together like a string of popcorn, 'time' (linear or otherwise), it means NO 'time'! No time to exist!
Bye! 😉
@claudioelgueta5722
02/18/2025 - 6:04 PMI think motion is a better word for the factor that determines time. Not friction nor entropy, but simply motion. Time is the dimension entered by the object that moves from A to B. Electrons seem to cheat time with their superposition.
@christopherellis2663
02/18/2025 - 6:04 PM2:12 Time is a long line…. ❌️ memory is, but time isn't. It exists only in the now. It is the observation of the motion of matter through space ✨️ Thank you
Now is when the future asks the past, What's next? 30:25, the terminator moves in one direction, it would show on a reversed film.
@marcelosalgado9729
02/18/2025 - 6:04 PMIf time was just a feature of our brains then we would never get older and our cells would never deteriorate and stars would never exhaust their nuclear fuel, and BHs would never evaporate, and the Universe would never expand, etc etc. So this idea that the notion of time is just an illusion of our brains is completely ridiculous or at best useless. Only because this timeless idea is convenient to loop quantum gravity proponents doesn't mean that it's true. Moreover, this notion of minimal lenghts of distance and time (granularities or eigenvalalues) are not Lorentz invariance. So in a different frame they can be actually lower. So all this unconventional notion and features about time Rovelli tries to convey seems nonsense to me.
@DaleKallio
02/18/2025 - 6:04 PMTime is an invented measurement. Convergence of ideas and the perceptible has convergence, but passing. Newton is a beginning. Predestination becomes relevant. Allegorical learning is inprecise, but valuable as a teaching method. Self awareness is key.
@RobertojavierSilvaharth-ub3pz
02/18/2025 - 6:04 PMIf humanity becomes extinct, but life on earth continues, will time still exist?
Is there any other lifeform that perceives time?
However, every other lifeform understands energy and distance and gravity, but not time!!
@jef3410
02/18/2025 - 6:04 PMIts incredable how much Newton discovered
@jordymaas565
02/18/2025 - 6:04 PMhow soon is now?
@4H46PvD
02/18/2025 - 6:04 PMFascinating
@laughterinthedark
02/18/2025 - 6:04 PMBut clocks are not time. They just measure it. Can anyone explain it to me why if the clocks are moving slowly due to gravity, time is also slow? 11:13
@prerna_aggarwal
02/18/2025 - 6:04 PMDo you believe time is an objective reality, or is it more of a human-made construct to make sense of the world around us? Why?
@williamotoole1210
02/18/2025 - 6:04 PMTumbleweed for the royalty joke , stopped time you could say, A long pause . Part of the presentation?
@logiclust
02/18/2025 - 6:04 PMguessing this guy isn't invited back
@robertmfacto
02/18/2025 - 6:04 PMTime is a side product of our use of numbers and the past is a reflection of the future. ?
@yamlau-gx7nx
02/18/2025 - 6:04 PMAn excellent and relatable talk
@Jadin784
02/18/2025 - 6:04 PM20:35 isn't there always a 'common now' in this context?