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What Is Hamiltonian
This section provides a quick introduction to the Hamiltonian, which is a derived property of a mechanical system defined as the total energy, the sum of kinetic energy and potential energy of the system.
2022-10-08, ∼255🔥, 0💬

What Is Coordinate System
This section provides an introduction of coordinate system, which is a mathematical model associated with a frame of reference that converts every location in the frame into set of numeric value or values.
2022-10-21, ∼253🔥, 0💬

What Is Lagrange Equation
This section describes the Lagrange Equation states that the time derivative of the partial derivative Lagrangian against velocity equals to the partial derivative Lagrangian against position. A proof is provided to show that the Lagrange Equation is equivalent to the Hamilton Principle.
2022-11-11, ∼252🔥, 0💬

Different Speeds Observed in Different Frames
This section describes the dependency of speed on the frame of reference. selecting different frames of reference will result different speeds of the same moving object.
2022-10-08, ∼251🔥, 0💬

What Is Duration
This section introduces duration between two events. The standard unit of duration is called 'second', which is the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom.
2022-10-04, ∼249🔥, 0💬

Observables in Phase Space
This section describes observables in phase space in terms of the Poisson brackets.
2024-12-14, ∼248🔥, 0💬

Newton's Laws of Motion
This chapter provides an introduction of Newton's Laws of Motion. Topics include Newton's First, Second and Third Laws of Motion; dependency on frame of reference; the gravitational force; the fictitious force.
2022-11-07, ∼247🔥, 0💬

Introduction of Speed
This chapter provides an introduction of speed. Topics include definition of speed; dependency of speed on frame of reference; measuring speed of light.
2022-10-04, ∼245🔥, 0💬

What Is Speed
This section provides a quick introduction of speed, which is a derived property of a moving object by calculating the distance the object has moved within a single unit of time.
2022-10-29, ∼243🔥, 0💬

Introduction of Lagrangian
This chapter provides an introduction of Lagrangian Mechanics. Topics include introduction of Lagrangian; Action, Hamilton Principle, Stationary Action, Lagrange Equations, examples of free fall motion; simple harmonic motion, simple pendulum motion.
2022-10-20, ∼243🔥, 0💬

The Relativity of Simultaneity
This chapter provides an introduction of the relativity of simultaneity in special relativity. Topics include the definition of the relativity of simultaneity; a thought experiment showing the relativity of simultaneity.
2022-10-14, ∼243🔥, 0💬

What Is the Relativity of Simultaneity
This section provides a quick introduction on the relativity of simultaneity, a phenomenon where two events happening in two different locations that occur simultaneously in one reference frame, occur non-simultaneously in another reference frame that is relatively moving.
2022-10-09, ∼243🔥, 0💬

Assumptions of Special Relativity
This section describes the two assumptions for the special theory of relativity proposed by Albert Einstein in 1905.
2022-10-10, ∼242🔥, 0💬

Introduction of Special Relativity
This chapter provides an introduction of the special theory of relativity. Topics include 2 assumptions of special relativity; inertial frame of references; the principle of relativity; constancy of speed of light.
2022-10-08, ∼240🔥, 0💬

Hamilton Equations in Cartesian Coordinates
This section provides a quick introduction to the Hamilton Equations in Cartesian Coordinates, partial derivative equations on the Hamiltonian function against position r and momentum p for an isolated conservative system.
2022-11-20, ∼238🔥, 0💬

1 Frame of Reference with 2 Coordinate Systems
This section provides an example of a frame of reference associated with 2 coordinate systems. The location of an object can be described as 2 sets of coordinates.
2022-10-18, ∼238🔥, 0💬

What Is Time
This section provides a quick introduction of time, which is a property of our universe that gives us a sense of age of living things and speed of changing object.
2022-10-13, ∼238🔥, 0💬

3-Dimensional Cartesian Coordinate System
This section provides an introduction of 3-dimensional Cartesian coordinate systems, which uses perpendicular projections on 3 perpendicular axes to describe any locations in the frame of reference.
2022-10-07, ∼234🔥, 0💬

Relation of Momentum and Hamiltonian
This section describes the Relation of Momentum and Hamiltonian.
2022-10-05, ∼230🔥, 0💬

Lagrange Equation on Simple Harmonic Motion
This section provides a quick introduction to the Hamiltonian function, the total energy of the system, which is the sum of kinetic energy and potential energy of the system.
2022-11-06, ∼229🔥, 0💬

What Is Frame of Reference
This section provides a quick introduction of frame of reference, which is a given object or objects we use as a reference to describe locations of other objects in the space.
2022-10-23, ∼229🔥, 0💬

Other Proofs of the Lagrange Equation
This section provides two other proofs to show that the Lagrange Equation is equivalent to the Hamilton Principle.
2022-10-21, ∼229🔥, 0💬

The Principle of Relativity
This section provides an example of law of physics, Newton's First Law of Motion, to help understanding the first assumption of the special theory of relativity: The Principle of Relativity.
2022-10-19, ∼226🔥, 0💬

Frame of Reference with 2 Objects
This section provides an example of a frame of reference with 2 objects, where locations of other objects are described based where they are located on the line that connects the 2 reference objects.
2022-10-11, ∼226🔥, 0💬

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