The Lava Lamp, like the little bird which dips his beak in water, pulls it out, the beak cools and creates a 'vacuum', which pulls liquid up in the head, the head is heavy, etc., is one of the strictly kinetic art forms. Of course the Lava Lamp may be considered for its' extemely inefficient, but servicable lighting capabilities. So, in this video, both 25 degrees and 45 degrees from horizontal are tested in this Lava Lamp video. Comparing with the 'normal' angle of 90 degrees, the central axis of the Lava Lamp basically at the strongest odds to gravity, 'glooping rate' is lower at lower angles. Feel free to determine some sort of measurement for this, such as 'gloops per minute', or perhaps add in an average mass per gloop AND gloops/minute. Unseen is the convection cooling from air. Likely horizontal would give the most cooling. Hardly anywhere for the gloops to go with the thing horizontal, however. We believe this type of study, or 'play', if you will, is central to development of significant scientific discipline, engineering perceptions, and so on. Of course there's some hazard to doing this, BUT, pay us if you like, and we'll handle some level of experimentation to your specification.
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Photos by Harold
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