unidad atómica

unidad atómica

A system of non-SI units used in quantum chemistry to simplify calculations and mathematical expressions. The definitions of atomic units include physical constants (like the speed of light , the rest mass of the electron, and other quantities that never change), so that all constants drop out of expressions when atomic units are used.

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Fagområde/Domene Chemistry
Category: General chemistry
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unidad

Education; Colleges & universities

Positive numerical value used in assigning the value of a course.

unidad

Design; Landscape design

How well the entire design comes together to form one landscape. All aspects of the landscape should complement one another rather than compete for attention.

unidad

Design; Landscape design

For the purposes of the Sustainable Landscape Information Series, a unit is a group of publications that concentrates on one topic area. There will be four units in the SULIS ...

unidad de masa atómica (u, dalton)

Astronomy; General astronomy

The masses of atoms and molecules are generally given in atomic mass units. These units are based on a scale in which the mass of carbon 12 is taken to be 12. Atomic masses were ...

unidad de masa atómica (uma)

Physics; General physics

Es igual a un doceavo de la masa del isótopo de carbono 12, 1 uma = 1.66x 10-27 Kg.

clausura

Chemistry; General chemistry

Un término matemático que dice que si funciona con cualquier par de números reales A y B con +, -, * o /, se obtiene un número real.

ditributividad

Chemistry; General chemistry

Una propiedad matemática que dice: A * (B + C) = (A * B) + (A * C).

frecuencia

Chemistry; General chemistry

Número de eventos en una determinada unidad de tiempo. Al describir una onda que se mueve, significa que el número de picos que pasan por un punto estacionario en una cantidad ...