This thread is about technologies (not fanciful anti-grav drives, but real technologies) which are either not being used as expected, or (in some cases) may have been bought up by big business to be sat on, or squashed by the government for some reason.

The Hirsch tube has been known since WWII. My inclused it here has to do with the fact that it weighs less and costs less than a freon compressor, with less maintenance, yet the same cooling efficiency. Again, if you'll re-read my post - why hasn't it been used as such so that the savings and reliability can be passed on to the consumer?

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I am Mugs, of the Alien clan of Usa, Nordamerica, a Terran, of Sol. A human.

Whoever says "perception is reality" is daft. It's merely an abstraction, and often not a very good one.