The Engineers Crib

biography.com The late professor  Stephen Hawking's  final theory on the origin of the universe has been published today in the  Journal of High Energy Physics . Hawking collaborated with Professor Thomas Hertog from KU Leuven on the paper which was submitted for publishing before  Hawking's death  in March this year. The paper’s ideas are based on string theory, it predicts the universe is finite and that the universe's origin may, in fact, be far more simple than current theories relating to the Big Bang. Modern Big Bang theorists believe that the universe came into existence with a burst of inflation that started to occur just moments after the Big Bang itself. It is thought that once this inflation begins the quantum effects can keep it going indefinitely. The part of the universe that we can observe is just a hospitable pocket where inflation has ended. "The usual theory of eternal inflation predicts that globally our universe is like...

Mechanical engineering  is a very wide discipline that, effectively, covers anything that moves.  Its breadth is due, in part, from its need to cover the design and manufacture of anything and everything in a moving system. This ranges from a system's smallest components to the completed, sometimes enormous, machine as a whole. Throughout history some  innovations  have come to define mechanics as we know it today, the following are no exception. These engineering innovations range from the any one of the classical 'simple machine' to complex concepts such as  flight . This list is far from exhaustive and in no particular order. 1. The Aeolipile Was an Early Steam Reaction Turbine The  Aeolipile   was the world's first rotating steam engine or more technically correct, a steam reaction turbine. It was devised by the great Heron of Alexandria in the  1st Century AD  and described it in great detail in his book  Pneumatica . ...

Weather forecast instruments are a vital component in our application of science and technology in an attempt to predict future conditions of the atmosphere for a given time and location.  This article will help you know the basic weather forecast instruments and invention which aids scientist in reading the weather today. 1. Pyranometers Measure Solar Irradiance Pyranometers  are a special type of weather forecast equipment used to measure solar irradiance on a given planar surface. They are also designed to detect and record solar radiation flux density  (W/m2)  within a wavelength range of  0.3 to 2.8 micrometers . They have become the World Meteorological Organization's standard instrument and are covered under the International ISO 9060 standard. Such devices tend to be calibrated using the World Radiometric Reference which is maintained by the World Radiation Center in Switzerland. Pyranometers tend to comprise of following main components: ...