Spacetime Curvature and Parallel Transport
4:51
The O Star Merger and Nebula HD 148937
12:36
Cosmology Chapter 2 problems worked out
17:15
What is Cosmology?
43:14
2 ай бұрын
Curved Spacetime and Geodesics
12:12
The Pound Rebka Experiment
10:25
2 ай бұрын
Gravitational Redshift
9:37
2 ай бұрын
The Strong Equivalance Principle
4:15
The Weak Equivalence Principle
5:02
Пікірлер
@user-nd7rg5er5g
@user-nd7rg5er5g Күн бұрын
600 of these views are from me. Excellent video!
@jhonv479
@jhonv479 2 күн бұрын
Hi, I have one application. If possible to include Croatia subtitles on your videos. Best regards
@lotusflowerrr
@lotusflowerrr 2 күн бұрын
Remember guys, if you don't tabulate your results then you're just lollygagging and it's not scientific.
@JasonKendallAstronomer
@JasonKendallAstronomer 2 күн бұрын
Lolz
@joshi8218
@joshi8218 2 күн бұрын
How do you make those beautiful svg illustrations?
@JasonKendallAstronomer
@JasonKendallAstronomer 2 күн бұрын
I made them in Apple Keynote then exported to JPG. My Adobe Illustrator-Fu is not ready for solo-leveling.
@joshi8218
@joshi8218 2 күн бұрын
Thanks! I love your videos!:-)
@LuxdaSabedoria-rk4io
@LuxdaSabedoria-rk4io 2 күн бұрын
Seus vídeos estão sendo entregue dublado, já sao 2
@JasonKendallAstronomer
@JasonKendallAstronomer 2 күн бұрын
Is that bad? I saw that as a default option in YT. If it sounds terrible, like a robot, then I’ll turn it off. Also, I use a lot of idioms that might be lost on an AI translator.
@robynsnest8668
@robynsnest8668 2 күн бұрын
I got excited just to see only four minutes long.... Awe. Something to look forward to!
@frederf3227
@frederf3227 2 күн бұрын
Presumably the "parallel transport along a closed path must rotate in curved space" isn't strictly true. There are space and closed path combinations that have no total rotations. It's just not guaranteed in general.
@JasonKendallAstronomer
@JasonKendallAstronomer 2 күн бұрын
Actually, it is guaranteed n general for curved spaces. That is how they are measured and defined. For a curved space to not change an arrow’s orientation on a closed loop means that curved space at that point has zero curvature.
@JasonKendallAstronomer
@JasonKendallAstronomer 3 күн бұрын
This is only a short snippet! Subscribe to get the next update!
@polyrhythmia
@polyrhythmia 3 күн бұрын
What is the actual distance to the center? Should be greater because of spacetime warp?
@graham2105
@graham2105 3 күн бұрын
Thankyou...my first time listening live. Very interesting.
@JasonKendallAstronomer
@JasonKendallAstronomer 3 күн бұрын
Glad you enjoyed it
@JohnDunne001
@JohnDunne001 3 күн бұрын
Looking forward to seeing these early via Members First - wahoo!!
@JasonKendallAstronomer
@JasonKendallAstronomer 3 күн бұрын
Of course! Welcome to the Membrrship!
@edd.
@edd. 3 күн бұрын
Did you read about the binary stars discovered orbiting Sag A*?
@JasonKendallAstronomer
@JasonKendallAstronomer 3 күн бұрын
I did! I'll do a short video on that too, if it's of interest!
@jasonshapiro9469
@jasonshapiro9469 4 күн бұрын
Thank you for making these videos! I hope they get very popular and you get rewarded for your work. It's encouraging to see people doing things that benifit others with no promise of gain for themselves 🙏
@JasonKendallAstronomer
@JasonKendallAstronomer 3 күн бұрын
I’m glad you’re enjoying them. More are on the way.
@jasonshapiro9469
@jasonshapiro9469 4 күн бұрын
I like to fall asleep to this stuff so i can dream I'm smart..this one's kinda short though, I'm goin to have to figure out how to put it on repeat
@animeaddicted7553
@animeaddicted7553 6 күн бұрын
Why we can use the ideal gas law ??
@andreialexandruvicol447
@andreialexandruvicol447 9 күн бұрын
New fear unlocked: suddenly being catapulted into space!
@JasonKendallAstronomer
@JasonKendallAstronomer 7 күн бұрын
pew!
@MuratOZDEMIR-j7e
@MuratOZDEMIR-j7e 9 күн бұрын
This man is treasure, giving for free this kind of in-depth knowledge
@LuxdaSabedoria-rk4io
@LuxdaSabedoria-rk4io 9 күн бұрын
Eu uni os pontos de maneira clássica, triângulos isosceles.
@LuxdaSabedoria-rk4io
@LuxdaSabedoria-rk4io 9 күн бұрын
O KZbin está entregando o vídeo já dublado.. ficou melhor
@Stanman121
@Stanman121 9 күн бұрын
So cool!! I'm 9 years late but I just dig your stuff so much. I started at video #1 now (jumping between current and these older ones)
@JasonKendallAstronomer
@JasonKendallAstronomer 3 күн бұрын
Thanks! It’s a long long long journey to do the entire series.
@miguelaphan58
@miguelaphan58 10 күн бұрын
So clear , and thougfull..are from alfa centaury..just passing by?..
@JasonKendallAstronomer
@JasonKendallAstronomer 9 күн бұрын
I'm actually right here on Earth.
@se7964
@se7964 10 күн бұрын
If space is not its coordinates, then why do we say space and time are relative? I mean, the Lorentz transformations are just coordinate transformations after-all
@s0urp0wer5
@s0urp0wer5 10 күн бұрын
Anyone else find videos like this with basic microphone and zero music to be the most relaxing content on youtube?
@LuxdaSabedoria-rk4io
@LuxdaSabedoria-rk4io 10 күн бұрын
Ok.. muito bem explicado, compreendi. Faça um vídeo sobre as dimensões.
@JasonKendallAstronomer
@JasonKendallAstronomer 9 күн бұрын
Obrigado! I’ll add that to my list.
@paulmicks7097
@paulmicks7097 11 күн бұрын
Excellent 👍
@JasonKendallAstronomer
@JasonKendallAstronomer 3 күн бұрын
Thank you! Cheers!
@paulmicks7097
@paulmicks7097 11 күн бұрын
Thank you Jason ... Were you born with this knowledge ?
@JasonKendallAstronomer
@JasonKendallAstronomer 9 күн бұрын
Kinda had to learn it in grad school. But I did like me some maths since I was wee.
@katherinejane1784
@katherinejane1784 11 күн бұрын
There are a number of great 'points' in this video! 😉 ❤
@jyotishka
@jyotishka 11 күн бұрын
Thanks. A quick clarification, shouldn't it be dl^2 = dr^2 + R^2(d\theta^2+ sin^2\theta d\phi^2) in the 3D system?
@Uncle_Neil
@Uncle_Neil 11 күн бұрын
Great video Jason, Thanks.
@pavelssuskis3468
@pavelssuskis3468 11 күн бұрын
Finally! Informative and interesting channel about astrophysics in English! Most of the channels I saw, that are that good are in Russian
@JasonKendallAstronomer
@JasonKendallAstronomer 11 күн бұрын
Thanks!
@pavelssuskis3468
@pavelssuskis3468 11 күн бұрын
@@JasonKendallAstronomer To be honest this is a rare example of good infotainment. I just got tired of those nice-pictured short videos or kinda Discovery videos that have no formulae. Which is a key for understanding what happens and why!
@Stanman121
@Stanman121 11 күн бұрын
I've been watching your videos for a while now. But I'm even going back to the start (the first video) just to make sure eventually I saw and listened to all. This will take some doing.
@JasonKendallAstronomer
@JasonKendallAstronomer 11 күн бұрын
Thanks! I’m glad you’re enjoying them. It does take time to go through them all. I'd suggest this playlist: kzbin.info/aero/PLyu4Fovbph6fl0UGSo3aLqHCmBIYkiqzq
@dexter8705
@dexter8705 11 күн бұрын
Homogeneous and not isotropic refers to the the direction or orientation and isotropic and not homogeneous refers to the change of "density" of space, but in regards to gravity if you joined both together its about the direction of reference frames movement and the rates of acceleration. Its basically its a vector/tensor graph
@noelstarchild
@noelstarchild 12 күн бұрын
A single photon, which follows the one before it and is followed by the one behind it, although a minute particle with no mass, being part of the universe within which it exists, actually expands along with the space it travels within making its' wavelength longer. Unknown to me if this affects its' amplitude, though that too would make sense if a photon loses energy and not merely have its wavelength expanded, converting it from gamma ray to x-ray for example. I will have to watch this twice to see if I have an answer. Jason Kendall, I find your channel enjoyable, challenging and inspiring. I certainly will give to you as and when I'm able. Thank you for what you do sir.
@rosco0567
@rosco0567 12 күн бұрын
Love it. Everyday is a school day
@Stanman121
@Stanman121 13 күн бұрын
2:14:14 I laughed so much. Had to listen to it twice 😂 Eeeever. You're so fun to listen to and watch. Freakin love every single video.
@JasonKendallAstronomer
@JasonKendallAstronomer 12 күн бұрын
Thanks!
@kennethmwatha4831
@kennethmwatha4831 13 күн бұрын
If protons and electrons merge to form neutrons in a neutron star, then where does the magnetic field come from?
@dhjerth
@dhjerth 14 күн бұрын
19:30 I'm having a really hard time wrapping my head around this bit with helium poisoning and ensuing expansion. Excuse my cluelessness as I'll try to explain what I understand: Helium builds up, hydrogen runs low, this causes gravitation to overcome "outward pressure", heating up the core/leading to some helium degeneracy. The helium is still "inert" wrt fusion. Remaining hydrogen is pushed into a shell around the core and still undergoes fusion, preventing collapse. The surface temperature drops. And now is when I'm lost: the sun starts growing in size. Why would it grow in size? Unless some new exothermic stuff starts happening, shouldn't the sun be shrinking? I watched another video on this, it might actually have been from this same channel, (EDIT: actually it was probably this video, just a minute later around 22:00) that explained the swelling by hydrogen needing to expand in order to keep fusing, because there is less of it, and so it has to sort of "speed up" in order to find other hydrogens to fuse with. I must be wrong because this all sounds completely teleological to me! If gravitational pressure overcomes "heat expansion" (again please excuse my awful terminology), how could that lead to more expansion? Does it have anything to do with energy/heat distribution across the layers? Does hot plasma expand like hot gas does? Or is the explanation complete at the referenced timestamp 19:30 and I'm just not understanding it? I would be most thankful for any pointers, and thank you for these wonderful lectures.
@wwabete2009
@wwabete2009 14 күн бұрын
Why do I feel I am listening to Bashar Channeling!!!
@Hall-Petch
@Hall-Petch 14 күн бұрын
I learned a lot today about the light
@LithiumBattery0
@LithiumBattery0 15 күн бұрын
Found your golden channel at the right time, thank you for this awsome video.
@JasonKendallAstronomer
@JasonKendallAstronomer 14 күн бұрын
Glad you're enjoying it!