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Colloidal gold is a sol or colloidal suspension of nanoparticles of gold in a fluid, usually water. [1] The colloid is coloured usually either wine red (for spherical particles less than 100 nm) or blue-purple (for larger spherical particles or nanorods). [2]
Mud (soil, clay or silt particles suspended in water, lahar, quicksand), wet plaster/cement/concrete, chalk powder suspended in water, lava flow (mix of melted and solid rock), melting ice creams: Gas Solid Hydrogen in metals: Solid foam: aerogel, styrofoam, pumice: Liquid Amalgam (mercury in gold), hexane in paraffin wax
A suspension is a heterogeneous mixture in which the solid particles do not dissolve, but get suspended throughout the bulk of the solvent, left floating around freely in the medium. [1] The internal phase (solid) is dispersed throughout the external phase (fluid) through mechanical agitation , with the use of certain excipients or suspending ...
'Gold water from Danzig'), Polish: Wódka Gdańska, with Goldwasser as the registered tradename, is a strong (40% ABV) root and herbal liqueur which was produced from 1598 to 2009 in Gdańsk (German: Danzig). Production now takes place in Germany. [1] The most prominent characteristic of the drink is small flakes of 23 karat gold suspended in ...
A colloid has a dispersed phase (the suspended particles) and a continuous phase (the medium of suspension). The dispersed phase particles have a diameter of approximately 1 nanometre to 1 micrometre. [2] [3] Some colloids are translucent because of the Tyndall effect, which is the scattering of light by particles in the colloid.
Sea foam washed up or blown onto a beach. Sea foam, ocean foam, beach foam, or spume is a type of foam created by the agitation of seawater, particularly when it contains higher concentrations of dissolved organic matter (including proteins, lignins, and lipids) derived from sources such as the offshore breakdown of algal blooms. [1]
Archimedes reportedly exclaimed "Eureka" after he realized how to detect whether a crown is made of impure gold. While he did not use Archimedes' principle in the widespread tale and used displaced water only for measuring the volume of the crown, there is an alternative approach using the principle: Balance the crown and pure gold on a scale ...
The following is the galvanic series for stagnant (that is, low oxygen content) seawater. The order may change in different environments. [1] Graphite; Palladium; Platinum; Gold; Silver; Titanium; Stainless steel 316 ; Stainless Steel 304 (passive) Silicon bronze; Stainless Steel 316 (active) Monel 400; Phosphor bronze; Admiralty brass ...