Relativity 101a: Introduction to Galilean Relativity

See? I do occasionally make videos.

[PabloGarcia-uyyh]

Let me tell you, from me and I believe from anyone who has followed your Tensor Calculus course, how happy and motivated we are to know that you're doing GR. I took GR this year, I passed with a medium grade. The math behind it I was able to understand it because of you. When I finished GR, my notions about some of the concepts are still a bit shaky, and I've been checking your channel to see if you decided to take on GR so I would be able to see and understand so well as it happened with Tensor Calculus. Thanks a lot really, can't wait to see the whole course uploaded so I can binge watch it and understand what I missed. Thanks again, you really are a great teacher.

[canyadigit]

I know that you might not see this, but I just want you to know how grateful I am for your videos. I am, like many people here, a self learner. You make the hardest concepts easy to understand. Without you, I wouldn’t be knowing the things that I know right now. This channel is golden, and so are you. I don’t want you to feel rushed. Take a break whenever you want. It doesn’t matter how long it is. We understand that producing these high quality videos takes time, and I want to remind you that you need time for yourself as well. Don’t overwork yourself :)

Do you have a patreon? I am sure that There are many people that would like to donate. I advertised your channel to a math subreddit because there are many people that want to learn this but don’t know where. Thank you so much! You’re awesome! :)

[alexandrealabora]

I can't stress enough how this course helped me, from beginning to end.

[andrejkharadi]

Your videos are outstanding, Sir! I am a mathematician and had only little affinity to physics so far.
Your lectures in Relativity have changed that with a lasting effect. I am now a self learner watching your lectures regularly with much pleasure and curiosity. Great job!

[stephaniebeiram]

I just finished your tensor videos in one day. They were delightful. I am happy to see you have lectures on relativity as well. I love your mention of how Einstein built on the work of others. It emphasizes that science is a group effort. Thank you for taking the time to make these videos.

[signorellil]

Hallelujah! I'm in Coronavirus lockdown in Italy so now I know what to do! Thank you!

[xspeedskater]

I’ve been looking forward to this ever since I discovered your tensor calculus series a year ago. Thank you so much for doing this.

[alejrandom]

I wasn't gonna watch this video thinking I understand galilean relativity, but 9:09 actually cleared up a lot of questions I didn't know I had

[emiliograndinetti]

I was waiting for sooo long and with such impatience for this video series, I watched your tensor calculus videos and I could understand it much better then with other videos, thank you!

[nadacjoe]

Welcome back! Will you ever do a series on simplexes and chains? Or measure theory? I would love to hear it from you.

[beagle]

welcome back.i am in lockdown so i am really pleased to take my mind off things!

[jayjun]

Thank you Mr. Chrs for making a video series about relativity! As you know, I am that 12-year-old kid who keeps asking you questions about stuff. I was about to ask if you could make a video about relativity, but I guess I won't have to! The whole reason I was obsessed with tensors was because I wanted to learn relativity! thank you! (btw: my name is Jay, but you can call me whatever you want).

[beagle]

Thanks, Chris .I will look out for the new lecture and then continue with my note taking.

[Carmenifold]

oh hell yes bro this is just in time, i'm working on a sci-fi project's FTL stuff, and i'm banging my head against the wall trying to figure out some easily digestible equations for the Alcubierre Drive. I haven't even gotten to wormholes yet and uhh i shudder at the thought right now. this'll be a really nice step back to help me get my thoughts in order

[pierreplourde]

Yay! The most awaited series since Halley’s Comet!

[bepis]

What a perfect time to start a new series. I can't wait!

[harikrishnank.j.]

Have been waiting for a series in GR. Thanks 😁

[garrettwalker]

Really like your teaching style! Hope you do an Intro to Quantum Filed Theory soon.

[AdeelKhan]

06:01 I think this depends on how fast the car is travelling in the forward facing direction.
- The faster the car is travelling, the more farther the ball is going to fall inside the car.
- So whether the ball falls exactly where it was dropped or farther back --> Is something that is dependent upon how fast the car is travelling within a fraction of a second. Because gravity will be acting upon the ball in that very slice of time.

[aproductions]

Starting this series after watching all of your tensor calculus videos, it's suddenly hitting me how tangent-space-y reference frames are, particularly on the case of frames that are the associated inertial frame tangent to a point on a non-inertial path