what is freeze drying?

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How does it work? I do not get it my brain won’t comprehend how you can freeze something and also remove moisture without heat

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Anonymous 0 Comments

If you want to see water boiling without heat…

Take a syringe (without the needle, of course) and take a small amount of maybe 50 degree Celsius or as warm as you can get from a tap. Put your finger over the opening of the syringe and pull it.

The reason the water is boiling is as others have said, water only boils as 100 degrees Celsius at normal pressure. The pressure on mount everest causes water to boil at 68 Celsius and in the deep oceans where the pressure is high, the boiling point can be as high as 400 degrees

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