Classical Physics

1304 Submissions

[3] viXra:1304.0159 [pdf] submitted on 2013-04-28 11:56:36

Energy Transfers from Airborne Wind Turbine: Review and Comparison of Airborne Turbines.

Authors: Bolonkin Alexander
Comments: 28 Pages. Reseach of AirBorne Wind System

Ground based, wind energy extraction systems have reached their maximum capability. The limitations of current designs are wind instability and high cost of installations. The wind energy industry is in need of revolutionary ideas to increase the capabilities of wind systems. This article suggests a revolutionary innovation which produces a dramatic increase in power per unit at a lower cost per unit of energy extracted and is independent of prevailing weather. The main innovation consists of large free-flying air rotors positioned at high altitude for power and stable air stream, and two types (mechanical and electrical) of an energy cable transmission system between the air rotor and a ground system. The air rotor system flies at high altitude up to 10 km. Stability and control systems is provided which also enable changing altitude. This article includes the theory of airborne wind systems and provides the analysis of four examples having a high unit power output (up to 50 MW). The proposed examples provide the following main advantages: 1) Large power production capacity per unit - up to ten - hundred times more than conventional ground-based small rotor designs; 2) The rotor operates at high altitude of 0.5 - 10 km where the wind flow is strong and steady; 3) Installation cost per unit energy is low and 4) The installation is environmentally friendly (no propeller noise). Author also provides a brief review of other main wind systems/turbines describing their advantages and disadvantages. ------------------------------------------------
Keywords: wind energy, cable energy transmission, electric airborne transmission, utilization of wind energy at high altitude, air rotor, airborne wind turbines, windmills, Bolonkin.
Category: Classical Physics

[2] viXra:1304.0153 [pdf] submitted on 2013-04-26 09:59:06

A Biased Classical Theory of Color – Hannay Angle and MacAdam Ellipse

Authors: Nicolae Mazilu
Comments: 11 Pages.

There is still much unfinished work, and understanding, in order to set the classical theory of light and colors on a physically firm basis. The present work advances a point of view touching this issue. The main starting thesis is that the Planck’s physical theory of light carries a special meaning, which allows us to select the general algebra to be used in treating the classical geometry of colors. This algebra is the one related to the SL(2,R) Lie group. In this framework, the classical MacAdam ellipse representing the uncertainty in deciding a color within trichromatic theory of colors, is closely related to the classical Hannay angle. This relation is explained. Further on, a special representation of trichromacy can result in a special representation of QCD itself. According to this representation, the QCD can be considered as the quantum counterpart of the classical theory of colors, much in the same manner in which the quantum mechanics is considered the quantum counterpart of the classical mechanics.
Category: Classical Physics

[1] viXra:1304.0066 [pdf] replaced on 2014-01-09 15:44:42

Electron's Mass and Electric Charge , Which One Changes with Velocity ?

Authors: Hoa Van Nguyen
Comments: 10 pages , 2 figures

This article presents two opposite opinions in contemporary physics on the variability of the mass of the electron . Mainstream physics considers the mass as varying with its velocity ( section 1) . Meanwhile , other physicists think of it as a constant in all physical situations ( section 2) . In this case , a mathematical equation can be deduced to express the variation of the electric charge with velocity and applying field( section 3 ). A thought experiment is proposed to show the variability of the electric charge of the electron in an external variable magnetic field ( section 4 ).
Category: Classical Physics