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