陆昱宽

Sources:

• How to Install & Configure VNC Server on Ubuntu 22.04

Sources:

• X Window 配置介绍

【金-元】元好问

绿叶阴浓，遍池亭水阁，偏趁凉多。海榴初绽，朵朵簇红罗。乳燕雏莺弄语，有高柳鸣蝉相和。骤雨过，似琼珠乱撒，打遍新荷。

人生百年有几，念良辰美景，休放虚过。穷通前定，何用苦张罗。命友邀宾玩赏，对芳樽浅酌低歌。且酩酊，任他两轮日月，来往如梭。

【金-元】元好问

重冈已隔红尘断，村落更年丰。移居要就，窗中远岫，舍后长松。 十年种木，一年种谷，都付儿童。老夫惟有，醒来明月，醉后清风。

Command-line syntax for Unix and Unix-like systems.

Source: docker container official document

Source: Things You Didn’t Know About GNU Readline

This post records the roadmap and resources for my physics learning, with the goal of understanding the conceptual structure of modern physics as a non-physicist.

For the mathematical background used in physics, please refer to my math learning roadmap.

This post records the roadmap and resources for my mathematics learning.

This note explains how infinitesimal changes transform under coordinate maps via the Jacobian matrix—from differential displacement to differential area and volume—in Cartesian, cylindrical, and spherical coordinates.

Note: Everything here is 3D and the cross product is used. In general dimensions, area/volume elements are best expressed using differential forms (wedge products); the 3D vector formulas here are a special case.

Sources:

1. Fawwaz Ulaby. (2020). Chapter 3: Vector Analysis. Fundamentals of applied electromagnetics (8rd ed., pp. 130–163). Pearson.