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What are some commonly known facts that are too bizarre for you to believe to be true? (lemm.ee)

submitted 10 months ago by [email protected] to c/[email protected]

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For me it is the fact that our blood contains iron. I earlier used to believe the word stood for some 'organic element' since I couldn't accept we had metal flowing through our supposed carbon-based bodies, till I realized that is where the taste and smell of blood comes from.

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[–] [email protected] 101 points 10 months ago (27 children)

Time relativity always boggles my brain, I accept the fact but I find crazy that if I strap my twin and his atomic clock to a rocket and send them out to the stratosphere at the speed of light, when they return he'll be younger than me and his clock will be running behind mine. Crazy

[–] [email protected] 2 points 10 months ago (2 children)

I wish we could test this out with only simple apparatus. Unfortunately the common people do not have access to satellites or nonstop bullet trains.

[–] [email protected] 1 points 10 months ago

We can and do. GPS satellites need to be regularly calibrated to Earth clock signals or they'll start to drift their calibration by meters per day.

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