Possible Simple Structures of the Universe to Include General Relativity Effects
Journal Title: INCAS BULLETIN - Year 2017, Vol 9, Issue 4
Abstract
The general relativity describes the universe properties, the gravity playing a fundamental role. One uses a metric tensor in a Riemann space, gmiu,niu , which should be in agreement with a mass (or energy) tensor in order to satisfy the Einstein equation of the general relativity [1]. This equation contains the Ricci curvature as well. In general, applications are done considering that a chosen metric is valid without region limits. In fact, the density of the energy whose distribution is however unknown is variable in universe; therefore, the metrics need to be adapted to different regions. For this reason one suggests to start with a simple, average mass-energy distribution that could represent in a first step the actual universe. This suggestion is in agreement with the symmetrical distribution of equal spheres existing in a model of the early universe given by one of the authors. Two kinds of distribution are given. The possibility of black holes formation is studied and a criterion is given.
Authors and Affiliations
Corneliu BERBENTE, Sorin BERBENTE
Keywords
Related Articles
- EP ID EP294192
- DOI 10.13111/2066-8201.2017.9.4.2
- Views 60
- Downloads 0
Phoenix Team's 2015 Unmanned Autonomous System
This paper provides a summary of the POLITEHNICA University’s UAS, SkyEye, designed to meet the objectives of AUVSI student UAS competition. SkyEye is a custom built quad copter controlled by the pixhawk, an open-source...
Concurrent engineering in designing a system for sensing gas leaks in harsh space environment
Leak monitoring is an essential operation that must be taken into consideration while making the design of a spatial vehicle. In order to make these vehicles function correctly in space and to avoid disasters, one needs...
Study on modernization processes in the coating metal surfaces (plain bearings) by thermal spraying
Knowledge accumulated within the metal coating through thermal spraying allows the understanding of aspects related to the coat structure phenomena, in this case of the routs that need to be followed in order to create s...
A 2D description of the single crystal thin plate growth from the melt by micro- pulling- down method. Part 2
This paper is the second part of a 2D description of a single crystal thin plate growth by micro-pulling–down (μ-PD) method. This part concerns the following aspects: temperature distribution and melt flow in the melt–cr...
AC1 Wing
The AC1 wing replaces the old wing of the wind tunnel model AEROTAXI, which has been made at scale 1:9. The new wing is part of CESAR program and improves the aerodynamic characteristics of the old one. The geometry of t...