Cosmology: Galileo to Gravitational Waves - with Hiranya Peiris

[@faIc0n]

Props to the speaker! This talk was so thoughtfully put together, I enjoyed/was interested every minute of it. Thank you for these talks and this wonderful channel.

[@bazsnell3178]

The magic phrase for any exposition "(first) WHAT we know and (then) HOW we know it" wonderfully done here. Thank you.

[@18daisydoll65]

Professor Hiranya Peiris delivers a fabulous content packed lecture. Her delivery and her use of visual and audio examples makes this subject extremely accessible. What I loved most about this was her joy in her subject and her insistence on the necessity of collaboration. It's extraordinary what people can achieve when they work together. Thank you for this.

[@technicalstudyTEengineer]

Yes

[@ramamurthycherukupalli2873]

A lucid lecture on "seeing" the universe by EM waves and "sensing" it by Gravitational waves. The limitations of human endeavour in such a giant search beautifully explained by Dr Hiranya Peiris. Thought experiments(predictions) and their verifications could not have been more beautiful.

[@johnsheehan5109]

Outstanding lecture, thank you

[@CreativeContention]

One of the clearest lectures on such a complex subject. Thank you.

[@rodneycunningham8551]

I'm

[@AdolfoRufatt]

Wow!!! Beyond the substance of the lecture, this is a most eloquent presentation about the way science goes at it! Thank you.

[@andychong5984]

Absolutely brilliant presentation. Thank you.

[@deeliciousplum]

Thank you for sharing this talk. Exceptionally insightful and inspiring.

[@madderhat5852]

Thank you for this. No matter how many documentaries I watch on cosmology there is always something exciting and new I learn.

[@fsphil]

This was great!

[@TechNed]

Mesmerising. Thank you and well done, Professor Peiris. Well done RI.

[@whiteboard9015]

As a Sri Lankan I'm proud abt u.

[@hakan6705]

A very very good lecture. Not only the results are mind boggling, the skills and effort are more so.

[@kiwikevnz]

Thanks Hiranya, very well presented, enjoyed it.

[@hassan6216]

I've always admired this channel 👍👍

[@terrywbreedlove]

Wow best lecture ever Hiranya was fantastic.

[@durgadasdatta7014]

Great lecture . God bless you. Such a nice presentation with so much clarity is really astounding.

[@dineshajayarathna7268]

Thank Hiranya.very well presented.I am your classmate Visakha vidyala.

[@bobaldo2339]

Great graphics - very pleasant lecture.

[@neddyladdy]

Wonderful talk.

[@stabiljka]

Excellent talk, but @ 29:00 the graph says that the Dark Energy was suspected since 1980s? I don't think that's correct, because when in 1998 they found supernovas in distant galaxies being further away than what theory predicted, they were certain they made some measuring mistake, and repeated the measurements seventeen times.

[@martinlutherofficial7064]

Fantastic and bombastic.... I wish to work with you...to listen you more.... A lot you have..... ...thanks for this beautiful lecture.....

[@davidwilkie9551]

When a star explodes the spectrum analysis shows how that particular event unfolded, and the same applies to the observable universe. It's equivalent to looking at the face of a clock and seeing all the numerals and, infer the possibilities of past and future sequences of events. The observable universe is the picture of Mr Michael Mouse and the hands moving in cycles. (Hand waving?) If you watch the clock from the side, the second hand appears to stand still at the top and bottom of its path, but accelerate and slow each side, so a disc or field of motion has an analog version in the clock. Gravity-mass effect of Quantum Fields.

[@FactualCounterpoints]

The question at the end was brilliant and we didn’t get to hear her answer!

[@shashidharshettar3846]

Hello HIRANYA (It Means - GOLDEN, n Hindi *Indian Language) your speech was "TRULY GOLDEN". Keep Going My Daughter Like..

[@Rico-Suave_]

Brilliant lecture

[@technicalstudyTEengineer]

Thanks for your teaching effort

[@paulasir6471]

Love you hiran...outstanding lecture

[@whirledpeas3477]

Solid rack for a hindi 👌

[@alone-tt8dg6ic6f]

I get two words ' detective and prediction '. Humans are detectives and like to predict things as per his / her knowledge, education,experiences of his/her surroundings and social standing.

[@cmarqz1]

Brilliant!

[@1612ydraw]

Fantastic lecture.

[@venkatraju4164]

excellent......informative

[@Rico-Suave_]

Watched all of it

[@realcygnus]

quite interesting..........good channel

[@donmilland7606]

Gawd she's good!! I wonder if anyone notice the number of times she walks around the desk. Lol. Nice hair too!

[@DanBel0711]

Very educational

[@abufaisal1st]

thanks a lot

[@jpdemer5]

Apple Mac - the official laptop of nuclear physicists and astrophysicists.

[@Raphael_NYC]

Wonderful. Thank you. raphael santore

[@justaguy4real]

cant even try to fathom that amount of time fraction, good lord thats small

[@chrissiriska8086]

Is it just me or do the speakers at RI dislike America LOL. I am at Video 19/52 and almost every speaker has made one joke or another and the U.S.A's expense. Can't say I am complaining I actually find it hilarious.

[@arkoprabhosadhu6738]

there have been many scientists who came to give lectures at RI, but it is so difficult to get laughs at simple jokes...makes me sad with all the silence, but the knowledge is intresting

[@cosimoto1]

Nice to see a Human Being who is not white, who does not seem to hate people who are actually white! I am a white male. I have great respect for your knowledge! In fact I would offer the observation that I can't even approach your knowledge! I have no moral issue with you! You, as far as I know are morally equivalent to me! I simply respect your apparently tremendous, hard earned understanding of our Universe! Why should people of colour hate me as if I perceive them to be inferior! I, my family, my friends, my colleagues DO NOT look at the world this way! I say a bunch of globalist, industrialists like the late, hated David Rockefeller, want to use us to get richer! Telling us who we hate (even if we don't) and who we love (even if we don't)!

[@donmilland7606]

Lol dude get a grip lol

[@ansfridaeyowulfsdottir8095]

Bit of an abrupt answer to the question at the end! {:-:-:}

[@kuldeeplaxminarayantrivedi1032]

Waoo waoo waoo...., 🌸🌼💐⌚🥰💖🌷🎊🎉😇

[@rohitchat5538]

🙏🙏👏👏🙏🙏

[@prem7010]

B Great knowledge . The prof looks like indian.

[@creativesource3514]

Likely Sri Lankan

[@donmilland7606]

You're pretty too 😀

[@rayagoldendropofsun397]

If GAS BONDING is a fact, Gravity/Black Holes are not. All downward falling motion, including Newtons apple, begins when rising gas molecules becomes trapped gas molecules, known as GAS BONDING, which take on a state of solid mass, blocking out it's electrons motion, it's fire power, thus becomes ENERGY LOCK lifeless gas molecules, and falls downward in real time, following it's electrons unlimited potential velocity, at the speed of light, connecting with the earth ENERGY CONSERVATION SYSTEM, establishing a downward falling path for trapped lifeless gas molecules /solid objects only. Equating the above fact with the physical universe, same as Einstein E = MC2 equates with the physical universe. E = ENERGY = MM = MOLECULE MOTION = Molecules in motion within star flames earth gases birds and balloons plains and rockets, even us humans rise from molecules in motion, creating an ENERGY FLOW, the ruling force of the universe. M = MASS = GB = GAS BONDING = Gas Binding take on a state of solid mass, blocking out it's electrons motion, it's fire power, thus becomes ENERGY LOCK lifeless gas molecules, and falls downward in real time. C2 = LIGHT SPEED = E = ELECTRONS = Electrons Unlimited Potential Velocity, at the speed of light, connects with the earth ENERGY CONSERVATION SYSTEM, establishing a downward falling path for trapped lifeless gas molecules/solid objects only. This they should've known ! It's only grade school science. Gravity is a mythical concept mentally applied with guaranteed result to it's point of origin, the BRAIN

[@ilyasabdullahishuaybdr2485]

I have the answer

[@justaguy4real]

nice seeing a woman up there giving lecture for a change AND she's attractive haha nice.

[@erwinmeza2826]

PEIRIS WELL...

[@johnlawrence2757]

Oh no! Not gravitational waves! Please! Give us a break.

[@dylan3657]

how can a spherical wave spiral

[@baganscissors7224]

as luck would have it

[@viswagsena108]

sub; change in perspectivesDo not throw away Space Baby into black-hole or gravity graveyard ! This mind-set absurdity -chaos and Big-Bang must change to conscious Sprit. Change and Exchange need of today's intellectual Wisdom

[@primemagi]

Hiranya Peiris I want to believe. You were a wonderful story teller. Who need fairy tail when hundreds of thousand capable & highly paid by borrowed money spend their entire life to weave such elaborate tails for grown up children. Sadly once again same old conspired fictions regurgitated by capable sales person. I want to believe, but So far no intelligent persons not even the scientist have responded to my questions. What is structure of photon, electron, nuclei, and how do they interact with gravity?. What is heat, magnetic flux and gravity. Ignorant may consider these question irrelevant, but these are what you used in your lecture presenting conspired fiction as fact. MG1