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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. The vessel is placed on a base containing an incandescent ...
GravityLight. GravityLight was a gravity-powered lamp manufactured until 2019. It was designed by the company Deciwatt for use in developing or third-world nations, as a replacement for kerosene lamps. It uses a bag filled with rocks or earth, attached to a cord, which slowly descends similar to the weight drive in a cuckoo clock.
Craven Walker remained a consultant at Mathmos until his death in 2000, helping particularly to improve the formula of the lamps. [6] Astro lamp has been in continuous production for 60 years and has been handmade in Britain since 1963, [6] and is still made today by Mathmos in Poole. The Mathmos lava lamp formula developed initially by Craven ...
K2-141b (also designated EPIC 246393474.01) is a massive rocky exoplanet orbiting extremely close to a K Type orange main-sequence star K2-141. The planet was first discovered by the Kepler space telescope during its K2 “Second Light” mission and later observed by the HARPS-N spectrograph. It is classified as an Ultra-short Period (USP) and ...
A new giant lava lamp iO was launched in 2019 the FIRST100 numbered edition selling out within hours. New candle powered lava lamps Pod and Pod + were also launched. The new lamps were photographed at Second Home co-working space in London Fields and in the iconic Barbican in London. [citation needed]
The Rayleigh–Taylor instability, or RT instability (after Lord Rayleigh and G. I. Taylor ), is an instability of an interface between two fluids of different densities which occurs when the lighter fluid is pushing the heavier fluid. [2] [3] [4] Examples include the behavior of water suspended above oil in the gravity of Earth, [3] mushroom ...
Artist's impression of CoRoT-7b, likely a lava exoplanet. A lava planet is a type of terrestrial planet, with a surface mostly or entirely covered by molten lava.Situations where such planets could exist include a young terrestrial planet just after its formation, a planet that has recently suffered a large collision event, or a planet orbiting very close to its star, causing intense ...
Based upon the size of the Earth and the force of gravity on its surface, the average density of the planet Earth is 5.515 g/cm 3, and typical densities of surface rocks are only half that (about 2.75 g/cm 3). If any significant portion of the Earth were hollow, the average density would be much lower than that of surface rocks.