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Lava lamps An original Mathmos Astro lava lamp A lava lamp is a decorative lamp , invented in 1963 by British entrepreneur Edward Craven Walker , the founder of the lighting company Mathmos . It consists of a bolus of a special coloured wax mixture inside a glass vessel, the remainder of which contains clear or translucent liquid.
A simple model of an unstable stratification converting to a stable one (in immiscible fluids, like oil and water, or the wax and water of a lava lamp). Note Rayleigh–Taylor instability plumes (with "mushroom" heads) in both colours/directions.
The classical Stefan problem aims to describe the evolution of the boundary between two phases of a material undergoing a phase change, for example the melting of a solid, such as ice to water. This is accomplished by solving heat equations in both regions, subject to given boundary and initial conditions. At the interface between the phases ...
Preparing your home for snow and ice can help prevent the slips and falls that account for 300,000 serious injuries and 20,000 deaths in the U.S. each year. Reduce the risk of falls by following ...
A lava lamp is a novelty item that contains wax melted from below by a bulb. The wax rises and falls in decorative, molten blobs. The wax rises and falls in decorative, molten blobs. Sealing wax was used to close important documents in the Middle Ages .
Note that the especially high molar values, as for paraffin, gasoline, water and ammonia, result from calculating specific heats in terms of moles of molecules. If specific heat is expressed per mole of atoms for these substances, none of the constant-volume values exceed, to any large extent, the theoretical Dulong–Petit limit of 25 J⋅mol ...
The TikTok is devoted to melting random things using lava stones, actual lava and molten aluminum, which is aluminum heated into its liquid form. The chemistry wizard behind Melt and Pour uses an ...
This figure represents the evolution of the Rayleigh–Taylor instability from small wavelength perturbations at the interface (a) which grow into the ubiquitous mushroom shaped spikes (fluid structures of heavy into light fluid) and bubbles (fluid structures of light into heavy fluid) (b) and these fluid structures interact due to bubble merging and competition (c) eventually developing into ...