Black-Hole--White-Hole-and-Worm-Hole(黑洞-白洞和虫洞).pptx

Black Hole, White Hole and Worm HoleFantastic Holes in the UniverseSong, KaiwenSchool of Civil Engineering and Architecture What is a Black HoleHow are Black Holes FormedWhite Hole Worm HoleCONTENTS What is a Black Hole3According to the general theory of relativity, a black hole is ——a region of space from which nothing, including light, can escape. It is a very compact mass whose Escape Speed is greater than the speed of light.It is called black because it absorbs all the light that hits it, reflecting nothing. Around a black hole there is an undetectable surface which marks the point of no return, called an Event Horizon(事件视界). Escape Speed:the lowest velocity that a body must have, in order to escape the gravity attraction of a particular planet or other object.The Escape Speed for :Earth - 11.2km/sSolar system - 16.7km/sMilky Way - above 525km/sSpeed of light: 300,000km/sNewton Cannon[1] How are Black Holes FormedBalance of force to maintain the star: Heat vs Gravity.The Life Cycle Of Stars [2] White Hole WormholeIn general relativity, a white hole is a hypothetical region of spacetime which cannot be entered from the outside, but matter and light can escape from it. [3]It is theoretically possible to enter a rotating black hole, avoid the singularity, and travel into a rotating white hole and travel into another universe.The channels connected them are called wormholes , which has become the subject of many science fiction novels and films. Referrence[1] 宇宙速度. /wiki/宇宙速度[2] The Life Cycle Of Stars. /slide[3] White hole. /wiki/White_hole Thank youSchool of Civil Engineering and ArchitectureSong, Kaiwen