Dictionary of Colloid and Surface Science

Paul Becher

• Publisher: CRC Press
• Year: 2020
• eBook ISBN: 9781000147636
• Edition: 1
• Topic: Physical Sciences
• Subtopic: Chemistry
• Index: Chemistry

This book is a mini-encyclopedia providing a wealth of information on all aspects of colloid and surface science, including historical background information, insights into the implications of definitions, biographical notes, and sketches of scientists who have contributed to the field.

APPENDIXES

Appendix A

Useful Constants in Colloid and Surface Science*

Constant	Symbol	Value	Units
Acceleration due due to gravity	g	9.80621	m sec^−2
Avogadro number	NA	6.02252×10^23
Boltzmann constant	k	1.38054×10^−23	J K^−1
Elementary charge	e	1.69210×10^−19	C
Faraday constant	F	9.6485×10^4	C
Gas constant	R	8.3143	J K^−1 mol^−1
Permittivity of free space	ε0	8.854×^−12	F m^−1
Planck constant	h	6.625×10^−34	J s
Velocity of light in vacuum	c	2.997925×10^7	m s^−1

* In SI Units.

Appendix B

Averages and Means

In colloid and surface science (as well as in polymer science) the situation often arises where, owing to non-monodispersity, a quantity cannot be represented by a single value, e.g., in a particle-size distribution. In this case, it is useful to be able to describe the quantity by an average or mean value. In addition, some measure of the spread of the values around the average is required, i.e., the standard deviation (See Appendix D). In ordinary discourse, when the word average is used, the arithmetic mean is meant. However, there are a number of other formulations of the mean which have specific applications. In fact, certain types of measurements result in a mean specific to that measurement. The averages which have been are used in colloid and surface science are listed below.

I. Generalized Mean

Except for the special cases of median, mode, and harmonic mean (described below) all means can be described by a generalized mean

(x)q-p=∫x0xmxq(dn/dx)dx/∫x0xmxp(dn/dx)dx

where the n_i are the number in the ith interval, and the sum of all the n_i is equa...

Table of contents

• Cover
• Half Title
• Title Page
• Copyright Page
• Preface
• Table of Contents
• Original Half Title
• A
• B
• C
• D
• E
• F
• G
• H
• I
• J
• K
• L
• M
• N
• O
• P
• Q
• R
• S
• T
• U
• V
• W
• X
• Y
• Z
• Appendixes