关于黑洞的主题演讲(共9篇).doc

关于黑洞的主题演讲(共9篇) 黑洞 演讲 主题 3分钟主题演讲辅导员 什么是主题演讲 中国梦主题演讲简介 篇一：有关黑洞的演讲 Synopsis of the black hole General relativity predicts a particularly dense dark objects. Evolution of massive stars in their late collapse occurs, the dense material in particular, it has one called event horizon of the closed border, a black hole hidden in a huge gravitational field, due to the gravitational field so strong, including in particular photon光量子 (the composition of light particles粒子), including any material can only be entered could not escape. The formation of a black hole minimum mass star#39;s core is about three times the solar mass质量, of course, this is the last star of nuclear quality, rather than main sequence stars in the period of quality. In addition to this stellar-class black hole, there are other sources of black holes - the so-called micro-black holes may be formed in the early universe, the so-called supermassive black holes may exist in the central galaxy. A black hole can be found through the concept of electronic equipment.(laser light for instance) The black hole within its borders to prevent any outsiders to see anything, which is the object known as the black hole of the reason. We were unable to observe the reflection of light it can only be affected indirectly understand the objects around the black hole. Having said that, but the black hole still has its borders, namely event horizon (horizon). The ergosphere(能层，黑洞周围假设区) is an oblate spheroid扁球面 region outside of the event horizon, where objects cannot remain stationary. It is assumed that the evolution of stellar black hole of death matter, is in a special super-massive stars collapse generated. In addition, the quality of a black hole must be larger than the Chandrasekhar limit of stellar evolution to the end of the form, quality, smaller than the Chandrasekhar limit of the star is unable to form a black hole. Next introduce one famous formula ,it was declared by Hawking to describe the black hole?