PhysicsNextBook
In this video we will talk about space-time diagram and discuss how events are observed and an object’s motion is tracked – in a manner suitable for special relativity. This generates the world-lines of objects and observers in a space-time diagram and also helps us realize why space and time are put together to form a unified entity called spacetime. We finally consider the world-line of photons and see how that leads us to the concept of light-cone in a spacetime diagram.
0:00 Intro — Spacetime diagram
0:32 What are events and its coordinates
1:10 Absolute time and Spatial coordinates in Galilean Relativity
2:03 Why we seek time evolution of a system in Physics?
2:40 Graphical representation – track of an object
3:57 Spacetime diagram – world-lines of object and observers
4:27 Time and space axis in a spacetime diagram
5:03 How an objects motion is tracked in a spacetime diagram?
5:55 Notation convention for spacetime coordinates
7:48 World-line of a photon – forward and backward lightcone
What is spacetime diagram?
What are Spacetime coordinates?
What is a world line?
World line of static observer
World line of a photon
What is a light cone?
What is forward light cone?
What is backward light cone?
#specialrelativity,
#spacetimediagram,
#lightcone,
#PhysicsNextBook
#worldline,
#spacetime,
#photons
Video on Galilean relativity and absolute time : https://youtu.be/Swms68IcviA
Video on postulates of special relativity and relative time:https://youtu.be/ESSBLiyDS14
Source
Space Time Photons Observer Stop Watch
Looks good
There is the letters which confirm its solved
M+H gives Stairway to Heaven.These are in your letters.MBraithwaite
Yorkshire Viking
Thank you
There are no emr particles, emr is waves at all frequencies. There is no wave/particle duality.
Backward light cone means, t is negative…
I think physically it means nothing in the past also could travel faster than light..
But I am not sure.
Please tell the correct answer.
Thank you sir 🙏