12 October 2018 Current Affairs:
Stephen Hawking’s final scientific paper has been written and posted online by his colleagues at Cambridge and Harvard universities. The paper was completed days before his death. The paper titled ‘Black Hole Entropy and Soft Hair’ tackles with what happens to information when it falls into a blackhole, a problem that theoretical physicists refer to as ‘the information paradox’.
In his paper, Hawking had argued that black holes have a temperature. Since hot objects lose heat into space, the ultimate fate of a black hole is to evaporate out of existence. However, the rules of the quantum world dictate that information is never lost. So what happens to all the information contained in an object when it tumbles into a black hole. In the latest paper, Hawking and his colleagues showed how some of the information may be preserved.