ludvigsen m general relativity - a geometric approach

... physical theories and notions is not always as easy as it might sound. It involves a new, less parochial, and less cozy way of looking at the world and, sometimes, new and unfamiliar mathematical ... of spacetime. It is no accident that I use the word “spacetime” rather than “space and time” or “space-time.” It expresses the fact that, at least as far as the fundamental laws of physics are...

Ngày tải lên: 24/04/2014, 17:07

... OF RELATIVITY XVIII. Special and General Principle of Relativity XIX. The Gravitational Field XX. The Equality of Inertial and Gravitational Mass as an Argument for the General Postulate ... development of electrodynamics and optics it became more and more evident that classical mechanics affords an insufficient foundation for the physical description of all natural phe...

Ngày tải lên: 17/03/2014, 14:28

... coordinate system a planar frame. They postulate: The Planar Frame Postulate for a Flat Surface A planar frame can be constructed with any point P as origin and with any orientation. Fig. 1.2: A planar frame. Similarly, ... already hinted at, concerning the mathematical description of a spacetime : a curved spacetime is to a flat spacetime as a curved surface is to a flat surf...

Ngày tải lên: 24/04/2014, 17:07

... the data in and of itself as the basis for taking relevant action at the farm. They may skip the process of systematic anal- ysis of data and give advice based on their immediate eval- uation ... indicate that few veterinarians use data analysis in their daily practice and advice. High data quality Low data quality COW POPULATION (herd or national) FARM Scoring + treatment Data analysis Bo...

Ngày tải lên: 25/10/2012, 10:45

... development of HCC, and mortality. In addition, HCV infection has been linked to a variety of extra-hepatic manifestations such as autoimmune diseases, lymphoma, monoclonal gammopathies and cryoglobulinemia. ... normalized ratio (INR), and a liver panel. Although the serum aminotransferase level correlates poorly with liver histology, the ratio of aspartate aminotransferase (AST) t...

Ngày tải lên: 02/11/2012, 09:51

... (IFN) alfa-2b, lamivudine (LAM), and adefovir (ADV) [ 1-3 , 7-1 0]. Table 1 summarizes a comparison of these three therapeutic agents. Interferon (IFN) alfa-2b As a potent immune modulator, IFN has ... determining indication, regimen, and duration of HBV treatment. Although interferon alfa-2b, lamivudine, and adefovir are all approved as initial HBV treatment, understanding the...

Ngày tải lên: 03/11/2012, 09:41

... IN QUANTUM MECHANICS RICHARD P. FEYNMAN Abstract A generalization of quantum mechanics is given in which the cen- tral mathematical concept is the analogue of the action in classical mechanics. ... causality states that all observable effects take place at a time later than the cause, Maxwell’s equations for the electromagnetic field possess a radiative solution other than that normally a...

Ngày tải lên: 06/11/2012, 11:21

... rang xay huyền bí phương Đông. Có 5 m ́c sáng tạo: + Sáng tạo 1: Culi Robusta + Sáng tạo 2: Arabica, Robusta + Sáng tạo 3: Arabica sẻ + Sáng tạo 4: Culi thượng hạng + Sáng tạo ... Culi Arabica hảo hạng. - Cà phê Passiona – cà phê dành riêng cho phái đẹp: là loại cà phê đầu tiên chuyên và duy nhất tại Việt Nam dành riêng cho phái đẹp, đem đến cho các...

Ngày tải lên: 03/04/2013, 08:30

... subject at most language universals. According to C. James (1980;19), C .A is a form of inter-language study and a central concern of applied linguistic. As a matter of fact, C .A has had much to ... well-known groups of people in social group, nationality adjectives are referred to general meaning and take plural and singular equivalences as well. For example an Irish woman, a...

Ngày tải lên: 10/04/2013, 14:46