Bøger udgivet af arima publishing

This book develops an Effective Theory of Quantum Gravity based on the two pillars of physics - namely, General Theory of Relativity and Quantum Mechanics. It opens up a new direction of research in the search for a quantum theory of gravity, by first exactly quantizing the Newton-Cartan-Schrodinger theory of non-relativistic gravity, and then special relativizing the quantized theory by invoking Mach's Principle in the case of the universe and Schwarzschild radius in the case of massive stars and black holes. The main technique employed for the latter task is a variational technique using a trial local density. Subodha Mishra is a Professor of Physics at the Institute of Technical Education and Research, Bhubaneswar, India. He has two doctoral degrees in Physics; one from University of Missouri-Columbia, USA, and the other from Institute of Physics, India. His research interests are in theoretical physics; especially in theoretical condensed matter physics and cosmology. Joy Christian is a Researcher at the Department of Physics and Wolfson College of the University of Oxford, UK. He received his doctoral degree in Foundations of Physics from Boston University, USA, and has been a Visiting Professor at the Perimeter Institute for Theoretical Physics, Canada. His main research interests are in the foundations of quantum and gravitational physics, with an outlook towards a theory of quantum gravity.

In this book you will find over 6,000 drawings of shotgun cartridge head-stampings. The information on these stampings is as important to the cartridge collector as the markings on coins are to the numismatist (or coin collector). In the early days of breech loading, any information to be found on a cartridge was stamped onto the base of the brass head. Many of today's shooting folk do not realise the vast amount of history that has gone in to the making of the modern cartridge. One reason for producing this book is to record some of this history so that it will not be lost to future generations. Up until the first world war, most towns in the UK had at least one firm that bought in printed and often stamped cartridge cases. These old firms, gunsmiths, gun-makers and also ironmongers, would load the cases and sell their own celebrated brands of shotgun cartridges. The paper tubes were often printed, but for just a little extra cost they would have their name and that of the town stamped in to the brass heads. Not all firms that sold their own cartridges would go to this expense, but many did and this book provides a record of many of them for the enthusiast.