Into the Unknown
The law of contracts is both judge made (based on past decisions) and legislature made (based on statues), all 50 states have enacted major parts of the Uniform Commercial Code or UCC. The UCC governs the sale of goods. The contract to pay money for a service, is likely to be governed by common law,…
Microservices Traditionally a three-tier application is made up of three components, usually all of which are based on databases: In a monolithic app, each of these is built into a single artifact. Updating, and scaling the application introduces many challenges. However in a microservices architecture, the application is decomposed into small, independent services, which uses network protocols…
Quantum MechanicsUniversity of Colorado Boulder If you’re with mechanical or aerospace engineering backgrounds and looking for a course that presents an introduction to quantum mechanics, this course is right for you. The course covers the most fundamental concepts and plenty of stuff. I have to say the pace of this course is fast, you need…
Unfortunately, real atoms (including hydrogen atoms) are not very well described by the simple theory. There are more things contribute to the actual atomic structure: Higher order effects Spin-orbit coupling Relativistic Nuclear spin Zeman Identity particles, that leads to the Pauli exclusion principle. Multiple electrons, the electromagnetic fields associated with the electrons can interact. Spin-Orbit…
External Motion Particle in a box is the simplest problem in quantum mechanics. A particle is just translating back and forth between the walls of the box. If there is no external field acting on the particle, i.e. no force acting on the particle except at the walls, then you can decompose the problem into…
Quantum mechanics is the mathematics of atomic and molecular structure. We seek to determine allowed quantum states and their energies. A Short History A definite understanding that atoms are composed of separate particles (nuclei and electrons) did not really occur till toward the end of the 19th century. The development of quantum mechanics is strongly…
Understanding Modern Physics I: Relativity and CosmologyThe Hong Kong University of Science and Technology I am thrilled to share my 100th course certificate. My journey to Coursera started in 2017, it has been 5 years since I got my first certificate. For this 100th certificate, I deliberately chose this course “Understanding Modern Physics”. I would…
Cosmology is the science of studying our universe. Being different from astronomy, which corresponds to studying some particular objects in our universe, for example, the black holes, neutron stars, etc. Cosmology is to study the universe as a whole object and study the universe itself: An interesting observation is at night the sky is dark,…
Customising Your Models with TensorFlow 2Imperial College London I highly recommend this course to everyone who is willing to be using TensorFlow 2. I have been using TensorFlow for years, but I still learnec a lot from it. One caveat is that this course actually is not an easy one, it won’t teach your what…
Previously, in special relativity, we have found that the concepts of space and time are relative. When you are moving, you will find space and time are different compared to others. However, when you are not moving, gravity will also bring us new understanding about space and time. The Earth gravity is so weak that…
Startup Valuation MethodsDuke University Hey, new business owners, this wonderful course is for you! You probably have already learned a lot about financing and accounting, you already know how to prepare tax and negotiate with banks. But this course offers one more perspective: how much is your business worth in the eyes of investors? Or…
Source of Capital for Startups First of all, there are 2 critical lessons to remember: Imagine you’re the entrepreneur, now the question is what is the right source of capital based on the characteristics of your business? The options include: Another way to look at this decision is to think about it in terms of…
Subclassing Models The model subclassing and custom layers give you even more control over how the model is constructed, and can be thought of as an even lower level API than the functional API. However with more flexibility comes more opportunity for bugs. In order to use model subclassing, we first import the Model class…
In 3-dimensional space, when we are looking at an object, what we see depends on the angle, the object is still the same object. Actually, the geometry of special relativity is nothing more than looking at a four-dimensional space-time object at different angles. We are actually looking at the relation of events at different angles,…
How do markets and investors determine the valuation of a company? There is a framework that financial markets used to think about value, which forms the basis of all modern financial markets. We will think of the price of an asset as being given by the present value of all of the future cash flows…