What Is Relativity? - Sean Carroll on Einstein's View of Time and Space

Explore Einstein's revolutionary theory of relativity in this 30-minute lecture from the series "Mysteries of Modern Physics: Time." Delve into the four-dimensional concept of spacetime, challenging traditional views of simultaneity and the present moment. Discover how Einstein's theory redefines our understanding of time as a personal experience, and learn about fascinating concepts like light cones, time dilation, and length contraction. Examine the implications of relativity on our perception of the universe, from the behavior of subatomic particles like muons to the possibilities of time travel. Gain insights into Einstein's conceptualization of space-time and compare it with the Newtonian perspective, ultimately grasping the profound impact of relativity on modern physics and our view of reality.

Understanding Cosmology, Gravity, and Relativity
Taking a Four-Dimensional Viewpoint of Relativity
Moving Into a Space-Time View of Reality
Differences Between a Newtonian and Einsteinian View of the Universe
The Notion of Simultaneity
Einstein’s Clocks, Poincaré’s Maps by Peter Galison
Recurrence Theorem
Einstein's Clock Patents
Constructing the Present Moment
Why Space-Time Is Relative
What is a Muon?
Carl Anderson Discovers Muons
Why Do the Muons Reach Us Before Decaying?
Einstein's Notion of Time as Personal
What Are Light Cones?
Time Dilation and Length Contraction
How Einstein Conceptualizes Space-Time
Newtonian Rule for Time Travel
Implications of Relativity