Main public logs

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• 15:01, 24 September 2026 Rongzhou talk contribs created page File:Two-body-problem.ggb
• 15:01, 24 September 2026 Rongzhou talk contribs created page Two-body-problem (Q1786) (Created the image item for Two-body-problem)
• 15:01, 24 September 2026 Rongzhou talk contribs uploaded File:Two-body-problem.ggb
• 14:41, 24 September 2026 Rongzhou talk contribs created page Two body problem (Created page with "In astronomy, two body problems normally refer to the study of the gravitational interaction of two celestial objects. == Classic form: planetary/satellite orbit (point mass approximation) == Approximate a star/planet as point mass $M$, and a planet/satellite orbiting around it as point mass $m$. The orbit of the planet in the reference frame of the star satisfies the equation: {{#content:Q1785}} Where $\mu=G(M+m)$. === Derivation === Let $$ \mathbf{r}=\math...")
• 14:35, 24 September 2026 Rongzhou talk contribs created page Planetary orbit (Q1785) (Added content item: Planetary orbit)
• 13:42, 24 September 2026 Rongzhou talk contribs created page Gravitational potential energy (Created page with "Gravitational potential energy, commonly noted $U$, refers to the energy incorporated in a system as a result of the gravitational attraction between its elements. == Zero reference point == Generally, we define the zero reference point: {{#content:Q1779}} Since there is no gravitational interaction when objects are at an infinite distance from each other. Then, the gravitational potential energy of a system measures the amount of work done by gravitational forces t...")
• 13:40, 24 September 2026 Rongzhou talk contribs created page Gravitational potential energy and gravitational potential (Q1784) (Added content item: Gravitational potential energy and gravitational potential)
• 13:22, 24 September 2026 Rongzhou talk contribs created page Gravitational potential energy of continuous mass distribution (Q1783) (Added content item: Gravitational potential energy of continuous mass distribution)
• 13:12, 24 September 2026 Rongzhou talk contribs created page Gravitational potential energy between a point mass and a system of many point masses (Q1782) (Added content item: Gravitational potential energy between a point mass and a system of many point masses)
• 12:59, 24 September 2026 Rongzhou talk contribs created page Gravitational potential energy between many point masses (Q1781) (Added content item: Gravitational potential energy between many point masses)
• 12:54, 24 September 2026 Rongzhou talk contribs created page Gravitational potential energy between two point masses (Q1780) (Added content item: Gravitational potential energy between two point masses)
• 12:37, 24 September 2026 Rongzhou talk contribs created page Zero reference point for gravitational potential energy (Q1779) (Added content item: Zero reference point for gravitational potential energy)
• 06:47, 23 September 2026 Rongzhou talk contribs created page Classical mechanics (Created page with "Classical mechanics is one framework to the study of mechanics. == Validity == == Vector description == Concise description of mechanical systems can be provided with vectors. === Reference frame === A reference frame is defined by an origin $O$, and the three unit vectors for each dimension of space: $\overrightarrow{x}$, $\overrightarrow{y}$, and $\overrightarrow{z}$. It can be noted as: $$R(O;\overrightarrow{x},\overrightarrow{y},\overrightarrow{z})$$...")
• 06:40, 23 September 2026 Rongzhou talk contribs created page Gravitational force between two arbitrary objects (vector notation) (Q1778) (Added content item: Gravitational force between two arbitrary objects (vector notation))
• 20:53, 22 September 2026 Rongzhou talk contribs deleted page Item:Q1775 (content was: "Prod check existing 1790107930", and the only contributor was "SeedBot" (talk))
• 20:53, 22 September 2026 Rongzhou talk contribs undeleted page Item:Q1775 (2 revisions)
• 20:51, 22 September 2026 Rongzhou talk contribs created page Gravitational force between two point masses (vector notation) (Q1777) (Added content item: Gravitational force between two point masses (vector notation))
• 19:49, 22 September 2026 Rongzhou talk contribs created page Work and force (vector notation) (Q1773) (Added content item: Work and force (vector notation))
• 19:38, 22 September 2026 Rongzhou talk contribs created page Conservation of energy (vector notation) (Q1772) (Added content item: Conservation of energy (vector notation))
• 19:37, 22 September 2026 Rongzhou talk contribs created page Kinetic energy and velocity (vector notation) (Q1771) (Added content item: Kinetic energy and velocity (vector notation))
• 16:46, 22 September 2026 Rongzhou talk contribs created page impulse and force(vector notation) (Q1770) (Added content item: impulse and force(vector notation))
• 16:40, 22 September 2026 Rongzhou talk contribs created page Conservation of momentum (vector notation) (Q1769) (Added content item: Conservation of momentum (vector notation))
• 16:32, 22 September 2026 Rongzhou talk contribs created page Newton's 3rd law (vector notation) (Q1768) (Added content item: Newton's 3rd law (vector notation))
• 16:29, 22 September 2026 Rongzhou talk contribs created page Newton's 2nd law (vector notation) (Q1767) (Added content item: Newton's 2nd law (vector notation))
• 15:32, 22 September 2026 Rongzhou talk contribs created page Newton's 1st law (vector notation) (Q1766) (Added content item: Newton's 1st law (vector notation))
• 15:24, 22 September 2026 Rongzhou talk contribs created page Mechanics (Q1765) (wbeditentity-create:2|en: Mechanics, Subdiscipline of physics that studies force and motion of objects.)
• 15:22, 22 September 2026 Rongzhou talk contribs created page Mechanics (Created page with "Mechanics is the study of force and motion of objects. == Models == Different models have been developed throughout history to explain phenomenons in mechanics. At the time of writing, the most popular scientific frameworks of mechanics are: * Classical mechanics, valid for everyday objects travelling at ordinary speed * Relativistic mechanism, more accurate for very large objects (planets, stars, galaxies) and objects travelling at high speeds")
• 14:54, 22 September 2026 Rongzhou talk contribs created page Physics (Created page with "Physics is the study of physical phenomenons within our universe. == Disciplines == Major disciplines of physics include:<ref>{{#cite:Q1761}}</ref> * Mecanics * Material and solids * Fluids * Thermodynamics * Sound * Electricity and magnetism * Light * Atom and nucleus")
• 14:45, 22 September 2026 Rongzhou talk contribs created page Technology (Q1764) (wbeditentity-create:2|en: Technology, Application of science to solve real-world problems)
• 14:44, 22 September 2026 Rongzhou talk contribs created page Technology (Created page with "Technology can refer to * the practice of applying science to solve specific real-world problems * or any creations thereby made")
• 14:39, 22 September 2026 Rongzhou talk contribs created page Scientific method (Q1763) (wbeditentity-create:2|en: Scientific method, The methodology employed by scientists to study science)
• 14:38, 22 September 2026 Rongzhou talk contribs created page Scientific method (Created page with "The scientific method describes the methodology employed by scientists to study science. == History == === Origin === The origin of modern scientific methods can be traced back to ancient Greece, where scholars studied the physical world "either from the bottom up or top down" (Hewitt, 2020).<ref>{{#cite:Q1761}}</ref> === Modern scientific method === Italian physicist Galileo and British philosopher Francis Bacon were among the first to elaborate the modern scie...")
• 14:37, 22 September 2026 Rongzhou talk contribs created page Science (Created page with "Science is the systematic and logical study of the universe and its content. == History == === Ancient Greek civilisation == Ancient Greek scholars made significant discoveries of the physical world, notably in astronomy. For instance, in the 3 century BCE, Eratosthenes was able to measure the radius of the earth, and Aristarque the size and distance of the moon.<ref>{{#cite:Q1761}}</ref> === Ancient Chinese and Polynesia civilisations === The Chinese and Polyne...")
• 14:34, 22 September 2026 Rongzhou talk contribs created page Science (Q1762) (wbeditentity-create:2|en: Science, Systematic and logical study of the universe and its content)
• 13:48, 22 September 2026 Rongzhou talk contribs created page Source:Conceptual physics (Book) (Created the wiki page for Conceptual physics (Book))
• 13:48, 22 September 2026 Rongzhou talk contribs created page Conceptual physics (Book) (Q1761) (Imported Conceptual physics (Book) from an external authority)
• 13:45, 22 September 2026 Rongzhou talk contribs created page Person:Paul Hewitt (Created the wiki page for Paul Hewitt)
• 13:45, 22 September 2026 Rongzhou talk contribs created page Paul Hewitt (Q1760) (Imported Paul Hewitt from an external authority)
• 13:42, 22 September 2026 Rongzhou talk contribs created page File:De-Boeck-Supérieur-logo.svg (Uploaded the logo of De Boeck Supérieur)
• 13:42, 22 September 2026 Rongzhou talk contribs created page Collective:De Boeck Supérieur (Created the wiki page for De Boeck Supérieur)
• 13:42, 22 September 2026 Rongzhou talk contribs created page De Boeck Supérieur (Q1759) (Imported De Boeck Supérieur from an external authority)
• 13:42, 22 September 2026 Rongzhou talk contribs created page De-Boeck-Supérieur-logo (Q1758) (Uploaded the logo of De Boeck Supérieur)
• 13:42, 22 September 2026 Rongzhou talk contribs uploaded File:De-Boeck-Supérieur-logo.svg (Uploaded the logo of De Boeck Supérieur)
• 10:48, 22 September 2026 Rongzhou talk contribs created page The new pupil came from Algeria (quotation) (Q1757) (Added content item: The new pupil came from Algeria (quotation))
• 10:43, 22 September 2026 Rongzhou talk contribs created page The destiny of France is decided in this kitchen(quotation) (Q1756) (Added content item: The destiny of France is decided in this kitchen(quotation))
• 10:40, 22 September 2026 Rongzhou talk contribs created page When de Gaulle dies I will buy you a bicycle(quotation) (Q1755) (Added content item: When de Gaulle dies I will buy you a bicycle(quotation))
• 10:38, 22 September 2026 Rongzhou talk contribs created page I have it all(quotation) (Q1754) (Added content item: I have it all(quotation))
• 10:32, 22 September 2026 Rongzhou talk contribs created page I communicate with Ted through my father(quotation) (Q1753) (Added content item: I communicate with Ted through my father(quotation))
• 10:26, 22 September 2026 Rongzhou talk contribs created page Ted does not like you repeating a grade(quotation) (Q1752) (Added content item: Ted does not like you repeating a grade(quotation))
• 10:21, 22 September 2026 Rongzhou talk contribs created page Ted wants you to succeed in math(quotation) (Q1751) (Added content item: Ted wants you to succeed in math(quotation))