A disappearing number is a number that, when its digits are manipulated in a specific way, results in the original number disappearing or becoming zero. One common example is **the number 4**, where if you write it down and then subtract half of it (which is 2), you end up with 2.

The Argand system, also known as the Argand plane or complex plane, is a way of representing complex numbers geometrically. Named after the French mathematician Jean-Robert Argand, it allows complex numbers to be visualized and analyzed in a two-dimensional space. In the Argand plane: - The horizontal axis (usually referred to as the x-axis) represents the real part of a complex number.

Figure "xkcd 435: Fields arranged by purity" must again be cited.

The opposite of from first principles.

Talks about rebellion of the oppressed (and bandits), and therefore has been controversial throughout the many Chinese dictatorships.

The book is based on real events surrounding 12th century rebel leader Song Jiang during the Song dynasty.

It is also interesting that Mao Zedong was apparently a fan of the novel, although he had to hide that to some extent due to the controversial nature of the material, which could be said to instigate rebellion.

The incredible popularity of the novel can also be seen by the large number of paintings of it found in the Summer Palace.

This is a good novel. It appeals to Ciro Santilli's sensibilities of rebelling against unfairness, and in particular about people who are at the margin of society (at the river margin) doing so. Tax the rich BTW.

It also has always made Ciro quite curious how such novels are not used as a way to inspire people to rebel against the Chinese Communist Party.

Full text uploads of Chinese versions:

Uploaded at: uploads.worldlibrary.net/uploads/pdf/20130423230739the_outlaws_of_the_marsh_pdf.pdf TODO legality? World Library seems like a legit website. Reads "Copyrighted materials".

Currently an informal name for the Standard Model

Chronological outline of the key theories:

Static case of Maxwell's law for electricity only.

Is implied by Gauss' law if Maxwell's equations: physics.stackexchange.com/questions/44418/are-the-maxwells-equations-enough-to-derive-the-law-of-coulomb

The "static" part is important: if this law were true for moving charges, we would be able to transmit information instantly at infinite distances. This is basically where the idea of field comes in.

The voltage changes perpendicular to the current when magnetic field is applied.

An intuitive video is:

The key formula for it is:where:

Applications:

Other more precise non-classical versions:

Bibliography:

Given experiments such as the Fizeau experiment and the Michelson-Morley experiment that couldn't really detect the Earth's movement across aether, people started to wonder if the Earth wasn't dragging the luminiferous aether.