Team Blackhawks

The topic of telescopes is familiar very much today. So today let’s talk about the discovery and some facts about Hubble Space Telescope. Hubble telescope was named after an astronomer named Edwin P. Hubble , but the astronomer who played vital role in making of Hubble Space telescope and known as mother of Hubble is astronomer Nancy Roman . Manufacturing began in 1973. This was the time when we were facing problems in sending rockets out of the earth’s atmosphere. As we know the main part of a telescope is mirror. So in Hubble space telescope it was necessary to make an accurate mirror which give us a crystal clear image of an object. The Hubble telescope consist of two mirrors primary and secondary, if only primary mirror was used the size of telescope will be very large so in order to make it compact, secondary mirror was used which magnifies the coming light rays and focuses on the camera. To make that mirror NASA decided to tie up with a company named Perkin-Elmer. Th...

The topic today is Materials. First of all, Material is a broad term for a chemical substance or mixture of substances that constitute a thing. In the metaphysical sense, materials can be anything something else is consisting of, whether pure or impure, a singular composite or a complex mix, living or non-living matter, whether natural or man-made, either concrete or abstract. We all know about materials. They are selected on the basis of their properties and strength. Because of recent breakthroughs in the field of science, new materials are invented. The earth is also itself one type of material and on earth there are many material which are classified by their properties. The 4 types of materials having unique properties are:- 1) Liquid glass 2) Starlite 3) DMSO 4) Pykrete You may have heard about some of the above mentioned names. But let’s get into details, Liquid glass Properties: ·          Ultra thin layer ...