General Relativity

Complex maths formulae on a blackboard. General Relativity.

Time Line. 1687 Newton’s Laws of Universal Gravitation 1905 Einstein’s Special Relativity 1915 Einstein’s General Relativity 1919 Arthur Eddington Verifies General Relativity.

Newton’s Laws of Universal Gravitation (1687). The law which explains how two massive objects attract each other.

Einstein’s Special Relativity (1905). No absolute space time Every objects move along their world lines with the limit of light cone Problem: Basing on Inertial reference frame, contradict its theory.

General Relativity (1915). Inspiration of Special Relativity: No absolute space time Light cone Improvement: Expand Special Relativity to non-inertial reference frame (Universe).

Theory Problem of Newton’s Theory. Instantaneously propagate Gravity act at a distance Only applies in weak gravitational field.

Phenomenon 1. The precession of the perihelion of the orbits of the Mercury Newton’s theory: 43 arc second difference between calculation and observation General Relativity: Closer to the observation.

Phenomenon 2. The bending of the light led by the gravity of the sun Newton’s theory: 0.875 arc seconds General relativity: 1.74 arc seconds.

Eddington’s Observation (1919). Observe the change in the position of the star Held in May 29, 1919, during the total solar eclipse Result: Group in Sobral : 1.98±0.12 Group in Principe: 1.61±0.30.

Comparison. Similarities: Both theories states that the gravity came from mass Difference (Newton): Basing on absolute space time Gravity is a force Gravity propagate instantaneously Gravity acts at a distance Difference (Einstein): Basing on non-absolute space time Gravity is a phenomenon led by the bending of space time Gravity has a speed which equals to the speed of light..

Black Hole.

I iiiiiiiiiiiiiii i i i ii. General Relativity-Light Cone.

Orbiting balls art. General Relativity-Basis Mechanism.

图表, 条形图, 气泡图 描述已自动生成. 图表 中度可信度描述已自动生成. General Relativity-Basis Mechanism.

图形用户界面, 背景图案 描述已自动生成. 电脑萤幕画面 中度可信度描述已自动生成. 形状 描述已自动生成.

time. How Black Hole Forms. horizon centre.

图片包含 游戏机, 星星 描述已自动生成. What will happen if we drop into a black hole?.

图片包含 游戏机, 星星 描述已自动生成. 图形用户界面 低可信度描述已自动生成. What will happen if we drop into a black hole?.

图片包含 游戏机, 星星 描述已自动生成. What will happen if we drop into a black hole?.

图片包含 游戏机, 自然, 星星 描述已自动生成. 图表, 饼图 描述已自动生成. What will happen if we drop into a black hole?.

Space term. Space term. Why would this happen?. Time Term.

Thanks For Watching.

Citations. https://www.nationalgeographic.com/culture/article/100104-isaac-newton-google-doodle-logo-apple https://en.wikipedia.org/wiki/Template:Special_relativity_sidebar https://www.sciencenews.org/article/key-einstein-principle-survives-quantum-test https://physicsworld.com/a/explorer-of-stars-and-souls-arthur-stanley-eddington/ https://blog.praxilabs.com/2021/02/24/applications-of-newtons-laws-of-motion-in-daily-life/ http://www.thestargarden.co.uk/Special-relativity.html https://medium.com/starts-with-a-bang/what-does-einsteins-general-relativity-actually-mean-d185ebd287e0.

Citation. https://astronomy.com/sitefiles/resources/image.aspx?item=%7BD3DD5DD6-DFC9-49A0-9DA4-81B93FEA906C%7D https://earthsky.org/human-world/may-29-1919-solar-eclipse-einstein-relativity/ https://medium.com/@GatotSoedarto/the-deflection-of-light-by-refraction-not-gravity-49b9bd919aba https://www.space.com/15421-black-holes-facts-formation-discovery-sdcmp.html https://youtu.be/GQZ3R81iyE0 https://www.bbcearth.com/news/what-would-happen-if-you-fell-into-a-black-hole.