We compute classical gravitational bremsstrahlung from the gravitational scattering of two massless particles at leading order in the (center of mass) deflection angle θ ∼ 4G √ s/b = 8GE/b ≪ 1. The calculation, although non-perturbative in the gravitational constant, is surprisingly simple and yields explicit formulae –in terms of multidimensional integrals– for the frequency and angular distri...

We present an experimental study of the angular distribution of light scattered from several rough metallic surfaces, which cover a range of roughness conditions. The substrate materials are steel or glass; roughened by bead-blasting, grinding, or etching; and aluminum-coated. The measured surface-roughness statistics are filtered by using a composite roughness model. The raw mechanical roughne...

Abstract By modeling the particle as a two-dimensional oscillator with natural angular frequency equal to Zitterbewegung frequency, expression of gravitational force between two particles is obtained. Gravitational effect absorption-scattering CZPF background by oscillators. The connection and electrostatic interaction

This paper studies the impact of system frequency deviations on the operation of fixed speed induction generators used in wind turbine generation systems (WTGS). It presents an analytic method to predict the angular speed, torque and current during and after a frequency disturbance. The proposed method can be used to evaluate the operation limits of the WTGS during frequency deviations.

This thesis presents a synchronization algorithm aimed to provide an estimation of the angular frequency, and both the positive and negative sequences of the fundamental component of an unbalanced and distorted three-phase reference signal. It does not require transformation of variables into the synchronous frame coordinates as other conventional phase-locked loop (PLL) schemes. Thus it is not...

Aiming to solve the problem of the limited measuring range for angular motion parameters of high-speed rotating projectiles in the field of guidance and control, a self-adaptive measurement method for angular motion parameters based on the electromagnetic induction principle is proposed. First, a framework with type bent "I-shape" is used to design triaxial coils in a mutually orthogonal way. U...

Solutions of the Einstein equations which are periodic and have standing gravitational waves, in the weak-field zone, are valuable approximations to more physically realistic solutions with outgoing waves. A variational principle for the periodic solutions is found which has the power to provide, for binary systems with weak gravitational radiation, an accurate estimate of the relationship betw...

The aim of the present study was to measure contrast sensitivity curves for angular frequencies in the range between 2 and 96 cycles/360 masculine in older human adult volunteers and to compare these measurements with the more usual contrast sensitivity functions for sine-wave gratings. All subjects were free of identifiable ocular disease and had normal acuity. We measured the contrast thresho...