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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 wall of lava lamps at the offices of Cloudflare Random number generator based on lava lamp motion Lavarand , also known as the Wall of Entropy , is a hardware random number generator designed by Silicon Graphics that worked by taking pictures of the patterns made by the floating material in lava lamps , extracting random data from the ...
Yogurt, peanut butter, xanthan gum solutions, aqueous iron oxide gels, gelatin gels, pectin gels, hydrogenated castor oil, some clays (including bentonite, and montmorillonite), carbon black suspension in molten tire rubber, some drilling muds, many paints, many floc suspensions, many colloidal suspensions Non-Newtonian Viscosity
This problem was initially solved by preparing the sandwich with one of the rods thicker than the other, but this solution was not practicable. The problem was eventually solved by powering the candles with alternating current which burned the two rods at the same speed. [1] The electrodes last about two hours or until the power is cut.
After the glass capsule is broken and the solutions mix, the glow stick glows. Different color glow sticks meant for use as bracelets A glow stick , also known as a light stick , chem light , light wand , light rod , and rave light , is a self-contained, short-term light-source.
Krypton-85 is a gas and is found mixed in with the argon, which is in the arc tube of the lamp. [8] The thorium, which is a solid, is used in the electrodes. [8] These isotopes produce ionizing radiation of alpha and beta type. This radiation causes high ionization inside the lamp without being able to escape from the lamp. [6]
The mercury-vapor lamp is a negative resistance device. This means its resistance decreases as the current through the tube increases. So if the lamp is connected directly to a constant-voltage source like the power lines, the current through it will increase until it destroys itself. Therefore, it requires a ballast to limit the current ...
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