Splash Biography
JOSHUA YI, Studying condensed matter, enjoy drawing pictures
Major: Physics College/Employer: Princeton Year of Graduation: 2025 

Brief Biographical Sketch:
Not Available. Past Classes(Clicking a class title will bring you to the course's section of the corresponding course catalog)S674: Introduction to Black Holes in Splash 2023 (Apr. 22, 2023)
We will be discussing how black holes affect the spacetime around them, starting from Einstein's equations. We will discuss metrics, geodesics, Minkowski diagrams, Schwarzschild and Kerr black holes, Penrose diagrams, and some interesting consequences (gravitational redshifting, time dilation, frame dragging). No knowledge of relativity is required.
S627: Introduction to variational mechanics in Splash Spring 2022 (Apr. 09, 2022)
What is an alternative to Newtonian mechanics, which seem to be the only formalism in classical mechanics we learn in school? This course will introduce you to the wonderful world of variational mechanics (which I find to be much more elegant than Newtonian physics), covering Lagrangian, Hamiltonian, Noether's theorem, and how to derive principles of Newtonian mechanics. If we have time I will go through some problems and applications.
S628: Introduction to Special Relativity in Splash Spring 2022 (Apr. 09, 2022)
How does moving at a constant speed change how you view the world? We will be covering time dilation, length contraction, and loss of simultaneity, and derive the Lorentz transformations and present it with 4vectors. We will compare these with the Galilean transformation and see how it reduces to classical mechanics if you suppose an infinite speed of light. Time permitting, we will work through some common problems and its roots in electromagnetism.
