各学科

Download nutkus for free. Two simple programs for kids learning the music notation. A TETRIS-like game with random notes scrolling on the screen, and NUTKUS - an animated orc controlled by your piano.

Archive of historical technological pessimism

‎** More than 5,000,000 musicians are now using the Piascore! ** ** iPad Pro, iPhone 15 Ready! ** "Piascore" is an iPad/iPhone application for browsing digital musical scores. Piascore's concept is "VIEWING MUSICAL SCORE FROM EVERYWHERE - ANYWHERE, ANY TIME." Here comes an application that solves E…

《游戏编程模式》中文版.

Your Online Chemistry Resource Our Most Popular Content Recommended Chemistry Guides Organic Chemistry Molecular Properties Transition State Theory Primary, secondary, tertiary carbons Nucleophile Intermolecular forces How to calculate formal charge Nomenclature Stereoisomerism Enantiomers vs. Diastereomers Carbocation stability Mechanisms SN1 vs. SN2 Grignard reagent mechanism Functional Groups Isobutyl Functional groups in organic chemistry Reagents PCC chemistry […]

The Molecule of the Month home page, based at the School of Chemistry, University of Bristol

This site's objective is to preserve and provide as much knowledge, software and useful hints as possible about the famous HP 9845 technical desktop computer series

The Apple Wiki is a community effort to document Apple's amazing devices and software.

Over 500 practice questions to further help you brush up on Algebra I. Practice now!

Matrix addition, multiplication, inversion, determinant and rank calculation, transposing, bringing to diagonal, row echelon form, exponentiation, LU Decomposition, QR-decomposition, Singular Value Decomposition (SVD), solving of systems of linear equations with solution steps

Chemistry education non-profit showcasing elements, reactions, experiments and tutorials. We make chemistry fun and easy to understand.

Every student in every school deserves the opportunity to study computer science.

Code for the manim-generated scenes used in 3blue1brown videos - 3b1b/videos

Engineers apply the knowledge of math & science to design and manufacture maintainable systems used to solve specific problems. AskEngineers is a forum for questions about the technologies, standards, and processes used to design & build these systems, as well as for questions about the engineering profession and its many disciplines.

Engineers apply the knowledge of math & science to design and manufacture maintainable systems used to solve specific problems. AskEngineers is a forum for questions about the technologies, standards, and processes used to design & build these systems, as well as for questions about the engineering profession and its many disciplines.

Animation engine for explanatory math videos.

Engineers apply the knowledge of math & science to design and manufacture maintainable systems used to solve specific problems. AskEngineers is a forum for questions about the technologies, standards, and processes used to design & build these systems, as well as for questions about the engineering profession and its many disciplines.

Engineers apply the knowledge of math & science to design and manufacture maintainable systems used to solve specific problems. AskEngineers is a forum for questions about the technologies, standards, and processes used to design & build these systems, as well as for questions about the engineering profession and its many disciplines.

The encyclopedia of natural numbers, random number generators, Roman numbers, prime numbers etc. All about natural numbers: basic and advanced mathematics, computing, codes and images, writing and naming in other languages, interesting data (numerology, history, culture, philosophy, biology, physics, chemistry, metaphysics, religion, distances, heights, times, crashed planes, games, ...)