Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Basic Forces

The quantum phase factor is the exponential of an imaginary quantity (i times the phase), which multiplies into a wave function. Historically, a natural extension of this was proposed in the fonn of a gauge transformation, which both multiplies into and admixes different components of a multicomponent wave function [103]. The resulting gauge theories have become an essential tool of quantum field theories and provide (as already noted in the discussion of the YM field) the modem rationale of basic forces between elementary particles [67-70]. It has already been noted that gauge theories have also made notable impact on molecular properties, especially under conditions that the electronic... [Pg.100]

Optimum conditions for allylic alcohol formation ( 65% yield of olefin mixture) appear to be those originally described by Wharton, rather than strongly basic forcing conditions. The pyrazole (147) is a by-product. [Pg.351]

A5.1 Channel Dimensions Assumptions and Basic Force Balances... [Pg.705]

It was also believed that there were three basic forces in nature gravity, electromagnetism, and a force that caused the particles within the nucleus to stick together. No one knew what kind of force the last... [Pg.203]

Some economists, such as 1993 Nobel laureate Douglass North, argue that the invention of intellectual property and its protection caused an explosion in creativity that was the basic force behind the Industrial Revolution (Hall and Jones 1999). As Charles Jones observed, sustained economic growth is a very recent phenomenon - it began with the Industrial Revolution in Britain in the 1760s - and the thesis of Douglass North and a number of other economic historians is that the development of intellectual property rights, a cumulative process that occurred over centuries, is responsible... [Pg.142]

There appear to be four basic forces at work ... [Pg.21]

In principle, the force field does not have to be an integral part of the program, though most of the packages used include a basic force field. Programs that have been used in the area of inorganic chemistry and that have been shown to lead to reliable results... [Pg.200]

Mooney-Rivlin correction. In the 1940 s, Mooney and Rivlin showed that, generally, the basic force-elongation relationship must be corrected by a term proportional to the reciprocal extension ratio ... [Pg.325]

Even though many of us are familiar with the term fluid, we probably don t know the true scientific definition. You may think that a fluid is a liquid like a normal saline solution. While this is true, a fluid does not have to be a liquid. In the scientific usage of the word, a fluid is any material that has the ability to flow. Thus both liquids and gases are considered fluids. Basic forces, like those that result from gravity or pressure differences, cause fluids to flow. When fluids are placed in a container, they assume the shape of the container, unlike solids that keep their shape. [Pg.105]

Apart from fundamental research which mainly is done by universities, R D groups of different industry branches (flavours and fragrances, pharmaceuticals) have made a great effort in order to find and develop new high pressure applications. This trend is basically forced by the following aspects ... [Pg.587]

Because the gravitational force is known in quantitative detail, the appearance of comets and the coming of solar and lunar eclipses can be predicted with unerring precision. Physicists strive to understand each of the four basic forces in complete quantitative detail. [Pg.127]

From this qualitative description of latex particles we can immediately recognize the origins of three basic forces that have to be considered in understanding the behavior of dispersions in both aqueous and nonaqueous media. These can be summarized as... [Pg.7]


See other pages where Basic Forces is mentioned: [Pg.285]    [Pg.843]    [Pg.369]    [Pg.383]    [Pg.102]    [Pg.19]    [Pg.334]    [Pg.17]    [Pg.68]    [Pg.59]    [Pg.67]    [Pg.81]    [Pg.285]    [Pg.132]    [Pg.36]    [Pg.42]    [Pg.68]    [Pg.83]    [Pg.18]    [Pg.126]    [Pg.126]    [Pg.126]    [Pg.45]    [Pg.62]    [Pg.64]    [Pg.66]    [Pg.68]    [Pg.70]    [Pg.72]    [Pg.74]    [Pg.76]    [Pg.78]    [Pg.80]    [Pg.82]    [Pg.84]   


SEARCH



© 2024 chempedia.info