My #100 course certificate from Coursera
Understanding Modern Physics I: Relativity and CosmologyThe Hong Kong University of Science and Technology I am thrilled to...
Cosmology
Cosmology is the science of studying our universe. Being different from astronomy, which corresponds to studying some particular...
General Relativity: Gravity and Black Holes
Previously, in special relativity, we have found that the concepts of space and time are relative. When you...
Special Relativity: Geometry, Momentum and Energy
In 3-dimensional space, when we are looking at an object, what we see depends on the angle, the...
Lorentz Transformation
Lorentz transformation is the central question in the mathematical structure of special relativity. Simply put, given the coordinate...
Special Relativity: Length and Simultaneity
The concept of “length” and “the same time” have to be reconsidered in special relativity. Light Ruler and...
Special Relativity: Space and Time
For hundreds years, space and time were absolute in the concept of Newton, they are something that can...