Astronomy - General Relativity (7 of 17) Proof of Theory: Precession of Mercury
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- čas přidán 22. 07. 2020
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We will proof existence of the theory of the precession of Mercury which Einstein's Theory of General Relativity predicted a precession of 43 arc seconds. (The calculations for sigma=43 seconds is video 15 of 17: Precession of Apsides Calculated for Mercury.
Link: • Astronomy - General Re... )
Next video in this series can be seen at:
• Astronomy - General Re...
I love this. I don't pretend to fully understand this, but you show the beauty and elegancy of the process of science. Like a great musician explaining Mozart or Beethoven to someone who does not play or read music but loves and appreciates it. You enhance the experience. Thank you.
Wow, thank you! We appreciate your comment. 🙂
I really love this stuff. Every other day Im looking up another video like this one.
This is one of the very few videos where it is correctly indicated that it is time stretch, and not space stretch, the part of the space-time that has to be taken in account from general relativity to explain mercury precession discrepancy (and GPS corrections, and the fall of the objects on Earth, etc.). And what a pleasure to don't see the wrong, annoying, rubber sheet example.
Glad you liked it. But we still need to be able to explain WHY time changes.
Professor, you must have some super powers stepping into the sun like that(2:53) over and over again.
can't believe how physicists are able to pull it off 🔥🔥🔥 totally mind blowing
Amazing! The piece that I was missing. Thank you so much!
Doctor, A number of papers have been written showing that a theory based on two premises, 1) a flat space, and 2) that light slows when traversing a gravitational field, can also explain the observed precession of Mercury. I believe Robert Dickey was one such proponent. What do you think of such theories?
GOD bless you.......excelent lecture
Thank you. Much appreciated.
It seems to me that the relativistic effect should be proportional to the gravitational pull of the sun, which goes as the distance squared. A back of the envelope calculation shows that the effect should be 5x less for Venus, and 10x for Earth, than it is for mercury. So why is there such confidence that the Mercury measurement proves General Relativity, but the same effect cannot be measured at all for either Earth or Venus?
I am aware that EV Pitjeva has claimed to have measured this for Earth, but her papers just led me in a circle, and she never mentions Venus. In one of her papers she calculated that the precession of Earth was 18x less than that of Mercury, but it seems like it should be about 10x less. And the lack of any mention of Venus is odd. So why is it that this relativistic effect can only be observed with the planet Mercury?
Not totally sure, but I think it's due to the fact that Mercury's perihelion is much closer to the sun than the other planets, so relativistic effects are stronger.
This means that mercury's precession is much more obvious than those of other planets.
Feel free to correct me if i'm wrong, I don't study physics
I was thinking that maybe its because the sun is not perfectly symmetrical and has some spot that are temporarily denser than others. As the sun spins around its axis these extra dense locations could affect mercury similarly to how a planet would. I dont really have anything to back this up and i belive your question is genuinely good. If you have found or do find anything in the future please do tell me
Your videos are awesome. However, is there a playlist of this series? If so, would you (or anyone else reading this) mind providing a link-or-please consider this a request to make one. Mucho Dankes.
Here is the link to the first video in the playlist. Each video has a link to the next video: czcams.com/video/NLhQ924Bcj8/video.html ASTRONOMY 32 GENERAL RELATIVITY
Also you can find all the playlists easily from the home page of the channel. There are also videos that show where the playlists are at and how to find them from the home page
Thank you sir, i got your message correctly.
You are welcome. Glad you liked it. 🙂
Greatest
You wrote 'Mystery since early 1980's' on your whiteboard. Shouldn't the year be 1780s or 1820s or some other earlier point in time?
You are correct, there was a suspicion already in the earlier part of the 19th century and with the new theory of the general relativity it became a focus item that is still being srutinized today. We could probably says that in the later part of the 19th century the rush to explain this phenomena became popular.
Hi sir, Omar present.....................
So time slows down at perhelion but the object increases in speed does it not too?
Yes, this is Kepler's second law. Objects move faster when they are at perihelion.
Hello. Is there a way that I contact you for a special matter. I really need help with some topics about thick lenses for applied engineering uses. I will pay for the service. Thank you.
Sorry, but we are extremely busy and don't have time to help with a special project.
could you please make a playlist of physics that review all the topics in a nutshell
i will almost finish the whole physics and i really need a review 👏🙏🙏🙏🙏🙏
please reply so i know you saw this🙏!
That is a good idea, but that would not fit on one video. We'll have to think about that.
All things considered, this is based on Earth's point of view right? If I was on Mercury, would I experience this precession?
It is based on a "fixed" coordinate system.
Plzzz sir upload lectures f EMT and laser...
Not sure what you mean with "EMT"?
Electricity and magnetism
The eccentricity of Mercurius is 0.2, isn't it? You said 10%.
Yes, it is 20%, I misspoke.
Mistério desde 1980?
This was predicted much longer ago.
I think it's ap-helion, not a-phelion... 🤓
👍