An (old) sheet of paper on the fridge in a research institute reading: Change my mind! Microwave * Emitting Rays * Microwaves (approx. visible Light x 10+ ) * location: Ground X-ray satellite: * Receiving Rays * X-Rays (approx. visible Light x 10^4) * location: Sky Proven: The microwave is an anti-X-ray satellite. Conclusion: If an X-ray satellite travels backwards in time it will become a microwave.
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