Directional Properties of Continuous Plane Radiators with Bizonal Amplitude Shading

Continuous Shading of Curved Surfaces

A procedure for computing shaded pictures of curved surfaces is presented. The surface is approximated by small polygons in order to solve easily the hidden-parts problem, but the shading of each polygon is computed so that discontinuities of shade are eliminated across the surface and a smooth appearance is obtained. In order to achieve speed efficiency, the technique developed by Watkins is u...

Cerenkov Detector for BABAR: Properties of the Quartz Radiators

Isotropic Radiators

Can the radiation pattern of an antenna be isotropic? A simple argument suggests that this is difficult. The intensity of radiation depends on the square of the electric (or magnetic) field. To have isotropic radiation, it would seem that the magnitude of the electric field would have to be uniform over any sphere in the far zone. However, the electromagnetic fields in the far zone of an antenn...

A Directional Occlusion Shading Model for Interactive Direct Volume Rendering

Volumetric rendering is widely used to examine 3D scalar fields from scanners and direct numerical simulation datasets. One key aspect of volumetric rendering is the ability to provide shading cues to aid in understanding structure contained in the datasets. While shading models that reproduce natural lighting conditions have been shown to better convey depth information and spatial relationshi...

Path Integration for the Plane Pendulum with Finite Amplitude

Exact path integration for the one dimensional potential V = b 2 cos 2q which describes the finite amplitude pendulum is presented. 1. Introduction In last two decades almost all of the quantum mechanical potential problems which are solvable by the Schrödinger equation method have also been solved by path integrals [1]. In this note we add the finite amplitude plane pendulum potential V (q) = ...