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Goniometer print that page


A goniometer is an instrument that either measures an angle or allows an object to be rotated to a precise angular position. The term goniometry is derived from two Greek words, gōnia , meaning angle , and metron , meaning measure . Contents 1 Applications 1.1 Communications

Goniometer (audio) print that page

A goniometer is often included in analog audio equipment to display the amount of stereo (that is, phase differences ) in a dual-channel signal. It allows the sound technician to adjust for optimal stereo and determine the makeup of errors such as an inverted signal. Many goniometers also

wikipedia.org | 2010/9/27 1:20:00

Positioning goniometer print that page


A positioning goniometer or goniometric stage is a device used to rotate an object precisely (within a small angular range) about a fixed axis in space. Its appearance is similar to a that of a linear stage . However, rather than moving linearly with respect to its base, the stage platform

X-ray crystallography print that page


pharmaceuticals against diseases . In an X-ray diffraction measurement, a crystal is mounted on a goniometer and gradually rotated while being bombarded with X-rays, producing a diffraction pattern of regularly spaced spots known as reflections . The two-dimensional images taken at different

History of radar print that page


The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell 's seminal work on electromagnetism . However, it was not until the early 20th century

X-ray spectroscopy print that page


William Lawrence Bragg and William Henry Bragg, who were the 1915 Nobel Prize Winners, were the original pioneers in developing X-ray emission spectroscopy (also called X-ray fluorescence spectroscopy ). [ citation needed ] He measured the X-ray wavelengths of many elements to high precision

Open-pool Australian lightwater reactor print that page


The main reactor uses are: Irradiation of target materials to produce radioisotopes for medical and industrial applications Research in the field of material science using neutron beams and its sophisticated suite of experimental equipment Analysis of minerals and samples using the neutron

Transmission electron microscopy print that page


TEMs are capable of imaging at a significantly higher resolution than light microscopes, owing to the small de Broglie wavelength of electrons. This enables the instrument's user to examine fine detail—even as small as a single column of atoms, which is tens of thousands times smaller than

Crystallographic database print that page

A crystallographic database is a database specifically designed to store information about crystals and crystal structures . Crystals are solids having, in all three dimensions of space, a regularly repeating arrangement of atoms , ions , or molecules . They are characterized by symmetry

wikipedia.org | 2011/7/30 7:24:59

Sessile drop technique print that page


surface Contents 1 Probe Liquid 2 Contact angle 2.1 Measuring contact angle 2.1.1 Goniometer method Advantages and disadvantages 2.1.2 Wilhelmy method Advantages and disadvantages 3 Determining Surface Energy 3.1 One component theories