Introduction to Colloid and Surface Chemistry |
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Page 44
... ELECTRON MICROSCOPY AND DARK - FIELD MICROSCOPY Resolving Power Colloidal particles are generally too small to ... electron microscopy , in which the limit of resolution is greatly extended , and dark - field microscopy , in which the ...
... ELECTRON MICROSCOPY AND DARK - FIELD MICROSCOPY Resolving Power Colloidal particles are generally too small to ... electron microscopy , in which the limit of resolution is greatly extended , and dark - field microscopy , in which the ...
Page 45
... Electron beams can be produced with wavelengths of the order of 0.1 Å and focused by electric or magnetic fields , which act as the equivalent of لمها Electron source Condenser lens Object Objective lens Intermediate image Projection ...
... Electron beams can be produced with wavelengths of the order of 0.1 Å and focused by electric or magnetic fields , which act as the equivalent of لمها Electron source Condenser lens Object Objective lens Intermediate image Projection ...
Page 46
... electron beams could also result in misrepresentation . A small amount of the material under investigation is deposited on an electron - transparent plastic or carbon film ( 100-200 Å thick ) supported on a fine copper mesh grid . The ...
... electron beams could also result in misrepresentation . A small amount of the material under investigation is deposited on an electron - transparent plastic or carbon film ( 100-200 Å thick ) supported on a fine copper mesh grid . The ...
Contents
THE COLLOIDAL STATE | 1 |
KINETIC PROPERTIES | 15 |
OPTICAL PROPERTIES | 38 |
Copyright | |
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acid adsorbed adsorption adsorption isotherm approximately aqueous behaviour boundary Brownian capillary condensation cell charged surface chemisorption cm-¹ co-ions colloidal dispersions colloidal particles colloidal systems constant contact angle counter-ions cross-section curve cylinder decreases deflocculated deformation depends detergent dispersion medium distance droplets effect electrical double layer electrode electrolyte emulsifying equation equilibrium example Figure film flocculation flocculation concentration flow heat hydrocarbon chains hydrophilic increase interaction interface intrinsic viscosity ionic ions isotherms light scattered lyophobic material measurements membrane method micelles mixed film molecular weight molecules monolayer monomolecular motion O/W emulsions orientated osmotic pressure physical adsorption plate polymer polymerization pores porous potential energy protein relative repulsive sample sedimentation shear soaps sodium solid surface soluble solution solvation solvent stability Stern layer stress surface tension surface-active surfactant temperature theory thermal thixotropic valency vapour pressure velocity viscoelastic viscometer volume W/O emulsions Waals wetting zero zeta potential