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Edward Craven Walker (4 July 1918 – 15 August 2000) was a British inventor, [1] who invented the psychedelic Astro lamp, also known as the lava lamp. [ 2 ] [ 3 ] [ 4 ] War record
Former Lava Lamp factory, at 1650 Irving Park Road, Chicago. British entrepreneur Edward Craven Walker had the idea for the lava lamp in 1963 after watching a homemade egg timer, made from a cocktail shaker filled with liquids, as it bubbled on a stovetop in a pub. [8] This precursor was designed and patented GB patent 703924 by Donald Dunnet. [9]
The theoretical power output of the device can be computed by taking the simple potential energy generated by raising a mass to a specified height, and then dividing it by the desired time that the light is to stay lit. Even a relatively large mass of 10 kilograms (22 lb), when raised to a height of 1 metre (3.3 ft) produces a maximum available ...
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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 pictures, and using the result to seed a pseudorandom number generator. [1]
MinutePhysics also has made two videos that were narrated by Neil deGrasse Tyson [13] [14] and one video narrated by Tom Scott. [15] The channel also collaborated with physicist Sean M. Carroll in a five-part video series on time and entropy and with Grant Sanderson on a video about a lost lecture of physicist Richard Feynman , as well as a ...
Consider a lamp with a toggle switch. Flicking the switch once turns the lamp on. Another flick will turn the lamp off. Now suppose that there is a being who is able to perform the following task: starting a timer, he turns the lamp on. At the end of one minute, he turns it off. At the end of another half minute, he turns it on again.
If the pulse is allowed to ring through the lamp it will lengthen the flash, so the diode traps the ringing, allowing the lamp to shut down at the correct time. The limits to long pulse durations are the number of transferred electrons to the anode, sputter caused by ion bombardment at the cathode, and the temperature gradients of the glass.