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> 1 <= x < y, x is an Integer
How do I write this (I forgot from highschool and can't figure out what to google to find it, it might be "in the domain of" or something. I need it for documenting some code. Y is 2,147,483,647, the max int value on a 32-bit machine.
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Could you build a device that converts radio waves back to useable electricity?
Like how solar powers feed off the sun, a "radio panel" that feeds of radio waves.
What about X-rays, microwave rays, etc? We can create them with electricity so we should be able to turn them into electricity.
Would this produce any useable energy worth storing, selling, using?