How fast is gravity?
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- čas přidán 9. 05. 2024
- Gravity is the most familiar of the known forces, but it seems to be eternal and unchanging. However, scientists believe that gravity moves with a specific speed. In this video, Fermilab’s Dr. Don Lincoln describes a fascinating observation that definitively measures the speed of gravity.
Fermilab physics 101:
www.fnal.gov/pub/science/part...
Fermilab home page:
fnal.gov - Věda a technologie
"It doesn't much matter what either of them think. Physics is an empirical science, and answering the question requires a measurement." What a great quote that conveys the essence of science.
That's why there's an Einstein cult?
@@ada7180 “there's an Einstein cult” - I never heard of it, but am unsurprised. And then, there is also a Cargo cult... No, there is not a “why.” Ppl can create a cult of anything and anyone. Don't pay attention, not worth it. :)
Educated physicists recognize and properly attribute the contributions of Newton, Einstein, etc. Without exaggeration, elaboration, fabrication.
The people who fixate "cults" onto these contributors are less educated.
@@pwnmeisterage Is this like a secret society? Never heard about such a cult. There isn't really a competition between Newton and Einstein. Einstein was born in a more advanced world and has modern science to bear in hindsight. Newton believed in transmutation, silly, Einstein believed the universe to be static and inserted a god coefficient in his equations, silly, again. Both were, sort of, vindicated in their assumptions. There you go, even when they are wrong, they are right 😀
@@ada7180 Never heard of a cult-like following of Eienstein, but there most certainly is an "Elon cult", and a "Tesla cult".....
This communicator is very, very good at what he does: short sentences, nice breakdown of concepts, good pace and soothing tone. Really happy I found this channel. Thank you.
Agreed. Too many presenters talk way too fast in long, convoluted sentences and then don't give you time to let the information even make sense and sink in before they're on to the next bit of information. They talk like they're just giving a review of something you already know and understand.
Excellent graphics, too.
@@dstatton I agree.
Concepts of philosophy , great imagination ,
Gravity is a force, it doesn't have speed.
Back in the 80's, I lived near Fermilab. A friend and I were discussing exactly this question, and after a while, I called the lab and actually got through to somebody who told me that nobody knows for sure, but it is assumed that it is the speed of light.
😊😅😅😮😢🎉😂
Gravity wave had two components 1) is the space change in object motion and second is time and thermo or sound change of angular momentum and result a value vector is the dot product of two of two vectors and direct vector of two is cross products and because 1 is model by sine function and Theo other is cosine function result a instantaneous wave breathing if proper is light and other is spectrum and it ís instantly felt but oscillated like pendulums a all over all space time because degree ofdark and light is amplitude and only local motion but propagate only in the flex of space time in unison all over space tim
@@TriPham-sn9jj nope not this, speed of light is answer
@@tatnallkennedy - More like "speed of causation" which happens to be the speed of light.
You called in the 80's; without re-watching the video, the announcer said the measurement that yielded speed of gravity = speed of light within a quadrillionth of 1% was done about 2015 or 2017. So when you called, they didn't know.
Dr. Lincoln, I have a degree in Chemistry and am an amateur Astronomer. So I am not a know-nothing when it comes to the hard sciences. But you are about the best explainer of complex Scientific concepts on CZcams and other video platforms. Keep up the good work.
except everything he touches told you it was a lie gravity does not exist is a effect of the curvature of space and sciences already concluded that space can expand faster than the speed of light this was necessary because many of the far galaxies that we observe are moving away from us faster than the speed of light and this concept of that gravity cannot move faster than the speed of light through space is absurd for A gravitational wave is a compression wave in the fabric of space time so we are measuring nothing but the movement of space itself and we already know it to move faster than the speed of light so everything he just said was observably fault other than yes we did Detective gravitational Wave but only two of the four detectors detected at these waves so were they really gravitational wave or just distortions in a gravitational field
Agreed (but without all the letters after my last name.
@@OutOfTheBlue100 I AGREE!
@@JLaP What if a random online dude, a nobody, knows what is gravity? What if his answer agrees with and is based on observations, theory and the reality and has implications on everything, from transport to energy production and matter manipulation?
I'm that guy & if I get 10k likes to my account, I will make a video explaining what gravity is, starting from The Beginning.
Wondering why I want followers first? I've spent too much time and energy on this question to give the answer away for free.
@@Tiberiump I gave you the first like . . . hoping that you could change the very foundation of astronomy with your profound revelations.
Dr. Don, you enjoyed saying "in a galaxy far, far away". I enjoyed the smile on your face and laughed with you. Thanks for the great video.
HIs glee is palpable!
May the gravitational force be with you!
LIGO, VIRGO, KAGRA are all coming back online in March for observation run #4. They have undergone improvement so the distance they can detect an event will be upped the distance by 50%. That means the volume of space they will cover will be around 3 1/2 times as large as before. That will add a lot of detections. It's going to be quite interesting to follow.
Interesting, they try to synchronize the opening times then?
@@nraynaud Yes, they will work together to triangulate locations. and confirm that it was not random noise.
Thank you very much
They will all show that they are all komplete krapp.
@@jppagetoo I must be behind the times because I thought there was ONLY Ligo. I didn't know now there are more gravitational wave observatories outside of the US than in.
It's amazing that we can finally study space and practice astrophysics without a telescope or detecting a form of EM radiation.
We have been told in University that Gravity is having the same speed of Light but we have never told how to measure it. This is a interesting video and I have learned a lot and thanks you !
But if gravity is everywhere, isn’t it at rest, except it’s effects on objects with mass. Maybe gravitational field strengths can be measured, but 0 g’s in space equals 0 G’s hear or there in space. Doesn’t only mass have speed and not the gravity itself?
@@kevindorsett728 The speed of light is a hard limit on the speed at which information can move - and the warping of spacetime(what gives rise to the phenomenon of gravity) is part of that information
You're a great speaker and teacher Dr Lincoln. Even I hardly understand lets say the 50% of the subject, I listen to your explanations full of interest and enjoy a lot.
In high school physic we discussed the subject, but could not demonstrate with measurements. You made my day fifty-three years later.
Mine too...
🍷
Ditto!
Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/energy is gravity. GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/energy is gravity. Now, ON BALANCE, carefully consider what is the fully illuminated AND setting/WHITE MOON. E=MC2 IS F=MA. Accordingly, ON BALANCE, the rotation of WHAT IS THE MOON matches the revolution. ELECTROMAGNETISM/energy is CLEARLY (AND NECESSARILY) proven to be gravity (ON/IN BALANCE). Great !!!!
TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! WHAT IS E=MC2 is F=ma. CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky (ON BALANCE). Consider TIME AND time dilation ON BALANCE. c squared CLEARLY represents a dimension of SPACE ON BALANCE. Accordingly, ON BALANCE, the rotation of WHAT IS THE MOON matches the revolution.
By Frank Martin DiMeglio
The gravity of WHAT IS THE EARTH/ground is BALANCED WITH and by WHAT IS E=MC2 (AND TIME). Indeed, TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Great.
By Frank Martin DiMeglio
TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. c squared CLEARLY represents a dimension of SPACE ON BALANCE. WHAT IS E=MC2 is taken directly from F=ma. The rotation of WHAT IS THE MOON matches the revolution. The stars AND PLANETS are POINTS in the night sky ON BALANCE. Consider TIME AND time dilation ON BALANCE. ELECTROMAGNETISM/energy is CLEARLY (AND NECESSARILY) proven to be gravity (ON/IN BALANCE).
By Frank Martin DiMeglio
WHAT IS E=MC2 is taken directly from F=ma, as the rotation of WHAT IS THE MOON matches the revolution; as TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. c squared CLEARLY represents a dimension of SPACE ON BALANCE, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). The stars AND PLANETS are POINTS in the night sky ON BALANCE. Great. It is proven.
WHAT IS E=MC2 is taken directly from F=ma, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE).
CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME (AND time dilation) ON BALANCE.
Consider WHAT IS THE EYE ON BALANCE. Great. Consider what is the fully illuminated (AND setting/WHITE) MOON ON BALANCE. WHAT IS E=MC2 is taken directly from F=ma. Great. TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE).
By Frank Martin DiMeglio
No one can demonsrate the measurements
My compliments in explaining these concepts so clearly, calmly and with the right amount of detail. These videos are gems.
Instantaneous means attracted to the same point, now! Not 8 minutes back or forth.
Black holes and neutron stars are explanations for electrical phenomena. All our so - called measurements are twisted by our mental assumptions. A galaxy needs an electrical energy hub, this is known as a 'plasmoid' to plasma physicists. Since galaxies are electrically driven plasma systems that sounds about right!
Neutron stars are really invented to explain pulsing radio sources, binary star pairs which have plasma oscillations. Simples!
That's right. The most important thing about teaching science should be the teacher's tone of voice, not the content. Who cares if it's scientific gibberish!
Just because astronomers believe what they say is true does not make it FACT! Most Space theories will never be proven, they remain good (?) guesses.
Dr. Lincoln, though I missed this when you first released it, I am so glad to see you making these informative messages. And supposedly said, you are wonderful at explaining these things and with the help that you get from staff and creating these graphics you managed to explain many things which might otherwise be quite challenging. I recall the series of videos that you made at the start of the Covid epidemic. However, you seemed to go silent and it is a great pleasure to see you back on some sort of a regular schedule.
The sun and Pluto travel through space at 200km/s and light travels from the sun to Pluto in 6h, including the gravitational field?. In that time, the sun travels 400,000 km. Does Pluto pass 400,000km behind the sun's midline?
@@pekkavirtanen5130
Yes including the distortion of space-time that is usually called gravity.
What does the Sun's midline have to do with it? It too is subject the distortion of space-time that we call gravity.
Thank you Dr Lincoln once again you have nailed down a tough concept and made it crystal clear. What a gift you have, and it is much appreciated.
This video is so well done. Not too long. Not too short. Explanation and the script is perfect. Visuals are good, too. Excellent job. Thank you.
Very, very cool observation and proof of a conjecture. You did a fantastic job explaining how all of these pieces fit together!
I had this exact random toilet thought about a year ago and could only guess as to ways to test it. I'm ecstatic that it was actually tested, and we now have empirical data to support the theory it travels the same speed as light. This popped up on my suggested videos and I'm super thankful for it.
Absolutely awesome, made the concept and explanation simple to understand. Subscribed!
Love your content, Fermilab! Great questions, and nicely explained theories! Sending love from New Zealand!
@Fermilab A superb lesson. Concise, informative, and there's enough here for viewers to go deeper. Great delivery, as well. A voice made for teaching. Thanks.
I've been watching you for a while. You are outstanding for the knowledge and the explaining method you have! Good work, sir!
Always a great moment to watch your videos. Fermilab is on my will.
Can we appreciate the work done by Dr. Don in this video?
[12/04/22] Great presentation. Those LIGO's are phenomenal instruments. Imagine how much more our understanding of Gravity will progress over the next 100 years.
Your "long time ago in a galaxy far far away" deserved a chuckle and I bet you were having a good time delivering the remark.
Excellent! Thank you very much, Dr. Lincoln!
Great voice, clarity, well presented. Very much appreciate the effort you have put into this accurate science communication.
You gave the gift of explaining very difficult things very clearly. Thank you for it!
Clearly explained and most appreciated!
Incredibly interesting and not boring presentation!!! Thanks a lot! I am not a physicist, just likes it some 50 years ago ehwn I was a high school student. I could understand everything 100%. What a wonderful guy presented it! Subscribed. Liked.
As always, a very informative, efficient, and superb video. You folks set the bar for science videos.
Don seems always provide some of the most concise yet accessible answers for we laymen. Like most I already knew from his earlier work the answer would be the "speed of causality" identical to the "speed of light in a vacuum." The video did evoke a new deeper question for me: Can gravity waves, like light waves, be focused by a galactic collection of mass? And what type of effects would that have in the Universe? Could that type of gravitational foci caused the first collapse of clouds of still hot gas into the first stars? Or would sonic reverberations and resonance in the still roiling plasma been primary cause? Your thoughts??
@@johnfoley3633 Gravity/acceleration involves BALANCED inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/energy is gravity. GRAVITATIONAL force/ENERGY IS proportional to (or BALANCED with/as) inertia/INERTIAL RESISTANCE, AS ELECTROMAGNETISM/energy is gravity. Now, ON BALANCE, carefully consider what is the fully illuminated AND setting/WHITE MOON. E=MC2 IS F=MA. Accordingly, ON BALANCE, the rotation of WHAT IS THE MOON matches the revolution. ELECTROMAGNETISM/energy is CLEARLY (AND NECESSARILY) proven to be gravity (ON/IN BALANCE). Great !!!!
TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE) !!! WHAT IS E=MC2 is F=ma. CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky (ON BALANCE). Consider TIME AND time dilation ON BALANCE. c squared CLEARLY represents a dimension of SPACE ON BALANCE. Accordingly, ON BALANCE, the rotation of WHAT IS THE MOON matches the revolution.
By Frank Martin DiMeglio
The gravity of WHAT IS THE EARTH/ground is BALANCED WITH and by WHAT IS E=MC2 (AND TIME). Indeed, TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. Great.
By Frank Martin DiMeglio
TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. c squared CLEARLY represents a dimension of SPACE ON BALANCE. WHAT IS E=MC2 is taken directly from F=ma. The rotation of WHAT IS THE MOON matches the revolution. The stars AND PLANETS are POINTS in the night sky ON BALANCE. Consider TIME AND time dilation ON BALANCE. ELECTROMAGNETISM/energy is CLEARLY (AND NECESSARILY) proven to be gravity (ON/IN BALANCE).
By Frank Martin DiMeglio
WHAT IS E=MC2 is taken directly from F=ma, as the rotation of WHAT IS THE MOON matches the revolution; as TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. c squared CLEARLY represents a dimension of SPACE ON BALANCE, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE). The stars AND PLANETS are POINTS in the night sky ON BALANCE. Great. It is proven.
WHAT IS E=MC2 is taken directly from F=ma, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE).
CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME (AND time dilation) ON BALANCE.
Consider WHAT IS THE EYE ON BALANCE. Great. Consider what is the fully illuminated (AND setting/WHITE) MOON ON BALANCE. WHAT IS E=MC2 is taken directly from F=ma. Great. TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE, AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE).
By Frank Martin DiMeglio
As always trying to prove a theory. They know the breakdown of this world. That’s why they claim to have to the hottest and coldest measurements in this system. They know they can’t measure anything in space so they try to mimic it here with cern and d wave quantum computers. They mimic absolute zero which is impossible. Mimic hell in their best way. Earth is flat. I seen clouds behind the sun 2 months ago. Sun is closer than you think. Super conducting magnetic system we live in. You have to understand the spirit behind your consciousness. We are eternal. We have been here before. Research before you listen to these focks. They lie to push an agenda. Jeferry Epsteink donated to Cern and other science institutions. Don’t trust the people who get paid to lie to you
@@johnfoley3633 Star formation triggered by gravity waves (converging to a focus at some distant point or not) seems pretty unlikely. The forces involved are far too minuscule-certainly in comparison to shock fronts.
@@marcmurison "Into the FIRST stars" is the key point. This would right after/during time Baron Acoustic Oscillation was forming bubbles in the plasma that would becomes the galaxies. The universe would have been millions of times smaller more dense. The first stars were true monsters thousands of times larger than the ones possible today, because there was no "metals" in the universe to cool down and condense the matter. No one really knows yet how they were able to collapse almost right after the recombination period.
Thanks once more, Dr. Don. Your videos are the best on CZcams. 👍😁
That's a lie, this channel is shill central, try The Thunderbolts Project on youtube. Gravity is a myth that cannot be conceptually explained or understood, it's not science
@@Saturn-Matrix; "A lie", yeah, okay sonny, whatever you say. Now go back to your video game in mom's basement. This is a channel for adults.
@@Condor512 What's funny is how hard you try to portray an air of sophistication with that sock puppet account yet lack elementary knowledge of punctuation. And for some reason you tried me with the most substandard, trite retort based on the contrived notion that I'm a gamer. What? My channel is public, unlike yours, so if you want to be critical, at least be accurate. It's always obvious when someone is projecting their own insecurities at you. The telltale sign is when someone makes completely fictitious and nebulous insults.
So now I can safely assume why you operate a sockpuppet account that wields the diction of a 3rd grader. It's because you're a self loathing individual who watches Pewdiepie with cringeworthy material on your channel that you feel you have to hide.
This channel is for adults? No, this channel is for unquestioning sheeple, those spineless, cowering, individuals unable to think for themselves. This channel is for those who are unable to question the existing masonic paradigm because, in reality, sheeple are not concerned with truth and knowledge, they just want to be liked and accepted, so they adopted this faux intellectualism and possess no knowledge of the nature of creation and their relationship to it. I mean, you probably think the moon landings were legit. Man, you sheeple are the ultimate clowns. I would laugh harder if you sheeple weren't causing the destruction of this great country.
Research, "Michael Collins Gemini 8 space walk hoax photograph."
And look up "Bill Cooper, NASA Mooned America."
Of course, you'll do neither and continue down the path of cognitive dissonance, ignoring all of my points because you're a sheep boy who found sanctuary in his ignorance. Saying I don't understand this dogma is insane. Obviously, I understand it better than you because, unlike you, I was able to break from it. I was only 16 when I realized how illogical the current cosmological paradigm was. Prior to that, I was religiously obsessed with this pseudo-astromony. Even as a child, when I thought I was saturated with the best and most modern knowledge of the universe my collective civilization could garner, I knew it brought me no real understanding of the universe, Einstein shared that same sentiment on his deathbed.
Now things are different, I do understand the nature of reality, mind, and matter. I understand how everything is intertwined. from the microverse to the macroverse. I can explain and illustrate my knowledge mathematically. And I can articulate my understanding with ease. But you must first break the programming if you want to learn the truth.
Luckily, now I can reflect on how indoctrinated I was. I can't imagine being a grown adult and still swallowing and regurgitating the malarkey the establishment spoon feeds you. That's sad. What do you people do and think about all day? Whatever it might be, one thing is certain, you people are not doing research. Some people never wake up; it's not in their stars to be anything but drones. Being philosophical is a gift not everyone receives. And what I said about gravity was too abstract for your vegetative mind. Hopefully, someone reading this will actually research some of the material I told you about and question the overt lies.
And if you believe in gravity and black holes, you also believe in the ability to divide by zero, so perhaps you deserve your fate as designed by cultural engineers.
At once I saw this title and thought of 33 feet per second, per second. Then I started listening to this and realized they don’t mean the acceleration, they mean they ultimate speed. Since the universal speed limit is the speed of light, that’s a logical conclusion.
Another question I hadn't thought to ask was clearly explained, understandable. The method of science and its results are satisfying.
As a now-retired teacher myself, I really do appreciate your excellent teaching style.
I asked all my teachers why we don't experience parallax in the celestial sky. Would you like to explain this? Seems my teachers don't understand what I'm asking
As always, your instructional videos are excellent! Thank you, Dr. Don!
Your programs are terrific. I'm just a plain ol' Georgia boy, but your videos have helped me grasp things far beyond my simple bachelor's degree. I never miss a new program.
First time on this channel. Must say, very nice.
Interesting topics and a smooth delivery so even a simpleton like me can understand :)
I never get tired of hearing you explain physics!
Thank you Dr. Lincoln and the Fermilab team for bringing us cool info
One of the clearest explanations of complex physics I've ever heard.
This is a question I have had since I was in Jr High and none of the astronomers I knew or better yet, had known (in public school, in college, ect.) knew the answer beyond, "possibly the speed of light." So, thank you very much for this down to Earth explanation.
Im very thankful for these videos. Clearly and very effectively communicated information about physics. Thanks!
The goat himself, Don Lincoln
Don, I really love your teaching style.
Awesome explanation and very well presented! I was kind of on the edge of my seat at the end waiting to find out the answer!
WOW! That was just stellar - pun intended. Very well organized and understandable explanation of gravity and light speeds. I totally got it.
Thank you for the great layman-term explanation. Much appreciated.
Nice presentation. I think Dr. Lincoln is getting better over the years. In the earliest videos I always felt the content was great, but the delivery was, well kinda 'stilted'. Now it seems a bit more relaxed and conversational, which I like. Thanks for all the great videos!
We all learn by doing. Do more and you learn more.
A clear explanation for the layperson, thank you so much!
This was very interesting and explained in a great way. I'm very happy I stumbled upon this video.
Very intriguing presentation! Your story telling and the way you educate the audience is so captivating and engaging and for a subject that many might find dry/boring. You're a great teacher!
Your explanations and graphics are PERFECT! Please do more about gravity. This is the least understood of all the forces we know. EXCELLENT VIDEO! +1sub ❤❤❤
I had always wondered this. Thanks for answering! Subbed!
As a listener that has some, but not a ton of knowledge of gravity, the cosmos, etc....this was so very understandable and made complete sense. (and no commercials!!!!!)
I am totally fascinated by the world of physics, but I have little background in it. I was entranced by Brian Greene's books---it was as ifl a curtain would open & I'd catch a glimpse of something wonderful & b/c Greene is amazing at explaining things, I could at least marvel at the wonder of the universe. I have watched CZcams science videos, & some are simply beyond me--they assume knowledge I don't have or that I have watched particular previous videos, which in turn refer to other previous videos & so on. Yours is one of 2 channels where I've been able to follow along well enough to get it! I thank you for your skilled summarizing, excellent graphics, and for not getting lost in the details (like, I don't need to know precisely how LIBOR works, just the basics). You have a new fan & subscriber!
My dad took me to fermilab as a kid, just to tour it. My major is physics. What you do there inspires the next generation.
That's another reason I love these videos put out by Fermilab and Dr. Don Lincohn. I admire you on your choice for a career field, I never had the head for calc back in high school. I took the tour out there in Batavia some years ago, they still also have events and lectures open to the public. The sciences are so important for us all, I wish you luck in your future endeavors.
Thank you for this terrific upload.
I figured the answer was probably "the speed of light", but it's neat to have some reason behind it, and for the 2 second delay. That was especially cool. Thanks for the great video! Subbed.
The delay is d/t the difference in size between the particles involved. Both are transmitted by the LCM at light-speed but one is slightly at variance with the particle size of the other which alters the speed of wave transmission slightly.
Thank you sir as always! So very informative and so very enjoyable!...Please continue sir!
Don is an absolute (haha) treat to watch and listen to. Easy on the eye and ear, he puts the subject over very well. Long may these continue.
only for weirdos
Another great, clear explanation. Wonderful!
Thank you for a very good video and presentation.
Liked and subscribed👌🏻
Gosh, this channel consistently presents ultra-sophisticated stuff in an economical and crystal clear manner -- better than any other channel out there, IMO (well, Veritasium is good, too). Thanks for the great service you've done for us all.
“[Don] presents ultra-sophisticated stuff in an economical and crystal clear manner” - yeah, you've captured the essence in an economical and crystal clear manner! 👍 It's always hard to strike the right balance.
Since you mention Veritasium, I want to add also @ScienceClick (in FR, EN, ES) with its 8 vid series on GR-popular but with essential math and _stunning_ animations, and then, a step up, @eigenchris with a full-blown, grad level but very accessible intro course to GR. No exercises or homework tho; there are MWT or Carrol's books for that.
@@cykkm If you're interested in animation, do check out 3blue1brown as well.
@@GetMeThere1 I doubt there's anyone not living under a rock and unaware of 3b1b. But thanks anyway! Spreading good stuff never hurts! :)
I’m so glad you exist and make these videos. I’ve really enjoyed watching over the years
Clean Energy by Proven New Energy Technology Animation Video czcams.com/video/wfGjGqMfKNs/video.html
Thank you. I have wondered about this for a long time.
I am not a physicist as such, but the title of this video grabbed me. I too had wondered about the speed of gravity, the speed of light is relevant to me in many ways but the propogation of gravity is a puzzle....thank you for making the video
Congratulations professor. Almost understood. This is not an easy subject to comprehend quickly, but the basis is done.
Come back and re-watch the video in a few week's time, and you will be amazed at how much more you do then understand.
Great video as always!! Lots of fun, and easy to understand. thank you!
Great video!
Happy New Year!
Thank you, Mr. Lincoln.
Excellent prsentation.
Any chance you could make the videos longer?? Honestly it's so good I don't want it to end in 10-15 min.. thank you for making these videos
You must be one of the few people these days who have an attention span of greater than 20 seconds.
How I wish I could have had a teacher like you, a long time ago in a galaxy far away!
you have him now
@Martin willemse shoosh
Bloody fascinating! Subscribed..
This was a question I had no idea existed and that immediately needed an answer to. Thanks! 😊
This is a ton of fun to watch. Physics has changed quite a bit since I was in school. This is really fascinating.
The physics has not changed at all. It is our understanding and interpretation of physics that has changed.
@@sandponics But doesn't physics sort of mean our understanding and interpretation of nature? The laws of nature probably won't ever change, not that the current physics knows of at least.
@@cryphtic But are the physics identical in all locations throughout the universe and throughout all of time? Probably not.
@@sandponics
Wrong, the properties of the universe have not changed. Physics has because physics is the study of those properties.
@@ethelredhardrede1838 But did not even Einstein consider that physics may differ in different locations such as within a black hole?
So happy I found this channel. I don't know why I never did before. I was a big fan of the collider there. 😪 Anyway, I'm here now! 😉 Hey! If you were close to a grav-wave inducing event, could your body feel it? Or would your body stretch along with the fabric of space-time? Just curious! 😎🤘☮️
THANK YOU... PROFESSOR LINCOLN...!!!
HAPPY NEW YEAR...!!!
Excellent explanation. Thank you.
Never tire of hearing about the ligo detectors! Excited for the space based version!!!!
I asked my college physics professor that question in 1993. He told me at the time that it was supposed to be equal to the speed of light, but hadn't been proven yet. Thank you very much and greetings from Patagonia Argentina
The speed of light is a limitation on mass. Gravitons are supposed to be massless so the speed of gravity may exceed the speed of light just like the speed of space time.
@@sevenstarsofthedipper1047 you mean like photons? ...
Did you even watch the video?
@@Albtraum_TDDC I am not a scientist but I have read articles and listen to lectures that indicated that the expansion of space itself exceeds the speed of light. Since you clearly know more than me, can you tell me what “space” is made of? Because whatever it is moves faster than light. And yes, I know that photons have no mass and that is why they set the limit of causality for objects with mass. Maybe you can help me understand the relationship between gravity and the Hubble constant. Thanks in advance for your response and help.
@@sevenstarsofthedipper1047 space is not made of anything. It is space. Other stuff exist in space. Mass particles, electromagnetic fields, gravity fields, etc.
You said Gravitons are massless and I pointed out that photons are also massless, but still "only" move at the speed of light.
For the Hubble constant you need an entire lecture, so I won't waste my time in CZcams comments.
@@Albtraum_TDDC If Space is made of “nothing”, what is expanding that between the galaxies, and what is being curved by the presence of matter?
I like the way you explain difficult science to understandable language. That is the beside the fact you present it in a lighthearted and kind of humorous way! Thanks for that
I'm pretty excited to see fermilab on CZcams!! 🤯😁👍🏻
One thousandth of the diameter of a proton... 144 million light years... I once did a degree in physics but, now as then, the numbers involved completely do my head in. I can cheerfully do the sums involving them, but conceptualising this stuff is beyond mind-boggling. Thanks for a top-notch explanation of a fascinating topic.
Yes, I too have a degree in physics/astronomy. He said "length of a proton" for some reason.
@@BrianAdams-dt1ks A slip of the tongue, I dare say. The concept of the diameter of a proton is well established and it is put at 0.842fm.
0.842 what's fm?
@@robertgreen7430 femtometres (in this context)
@@rich8037 thanks but what is it in relation to the meter?
I always enjoy Dr. Don's videos and how he explains the gravity of the situation!👍💥
He needs to take a running jump at the moon.
Chuckle chuckle.
I see what you did there.......................................Nicely Done .
Yes it's nice that he was able to shine some light on the matter, even though it's quite a heavy subject.
Who could resist weighing their copy of MWT _Gravitation_ textbook? It weighs over 7lbs! Gravitation is not the subject to be taken lightly!
Very nice and well explained. Thank You
Thank you very much for the efforts.
Amazing. The link between time and gravity is mind-bending.
And light as a mediator of sorts?
Well, gravity itself IS a manifestation of space-time so you'd expect they would be linked somehow. At least until someone comes up with a better theory.
@@caparroz1923 Could it be another field or particle? like the Higgs boson and field? and if that would be the case, it should have 0 mass as it is going at the speed of light, it makes sense that it does not go faster than the speed of light (as spacetime does) because gravity is distorting spacetime but is not part of it, so gravity does not interact with the Higgs field, unless gravity is something entirely different. I'm Not a scientist nor physicist, but gravity seems amazing.
I have this strange sensation that knowing about gravity will lead us to new and improved theories and thus, new technology, just a feeling.
I'm pretty sure that I understood all of that.
So, I'm both thrilled AND terrified! :)
Whatever the result, thanks so much! That was took a lot of complicated topics and explained them so clearly. And made me laugh multiple times. So, there's that too.
I was wondering about that question just recently. It's nice to get an answer.
Awesome video thank you. Always wanted to know this.
Great teaching, Super Jedi Master! I don't just like your videos. I LOVE them! Physics IS everything. Thank you. ........the only thing that confuses me is I thought teleportation was impractical. But I see from today's video that you super scientists at Fermilab have even figured that out!
Great video. Very clear and concise for us laymen who enjoy physics but don't have the deep knowledge.
Happy that you guys are now making videos. First view. Now we have something other than PBS Space Time to watch. Although I'm not retaining, or even understand, 99% of what you guys say, I am quite clearly highly entertained by this stuff. So much so that since that Space Time show started, I've pretty much watched exclusively that for the last 4 years. Nice to have Fermilab as well now for binge watching.
Excellent!! More please.
It should just be called the speed of causality from now on, shouldn't it? It's the speed that all forces are communicated with, in the vacuum at least.
Except for information which can travel instantaneously whenever the wave function encompassing two entangled particles any distance apart also collapses. Since information can have an effect which constitutes a cause it breaks this speed limit of causality which in my opinion - and Einstein's - represents one of the greatest conundrums of quantum mechanics indeed modern physics.
@@matthewsheeran What is meant by 'information'? Can the word information be described as something physical?
@@matthewsheeran can those particles ever get so far apart that the information gleamed from them can be retrieved faster than the speed of light? I don't think it's ever been done experimentally, and my gut feeling is that it will prove impossible.
Unless you're talking about a specific force then you just reference that force of course lol
@@matthewsheeran Never been able to retrieve useful information at any distance instantly
So exciting! And so well explained
great explanation. Thank You
This channel is one of the more interesting physics channels on CZcams.
Thanks for the reup!
Wonderfully explained, thank you.
Isn’t this the event that also generated the paper with the most co-authors?
(Iirc, the first batch of papers on this one (GW170817?) were published together - and the publisher produced a kind of a “table of contents” paper, listing all the other papers and their authors in it, so it had thousands and thousands of authors.)
I'd like to see a paper on Many Worlds take the record for most co-authors by listing each author in each world.
I remember reading that over a third of the world's astronomers (professional I assume) were coauthors.
@@nmarbletoe8210 “a paper on Many Worlds take the record for most co-authors by listing each author in each world.” 😁👍
Screamer
Lppknb
doc don does it again, clear and on point
This is brilliantly explained!