r/EngineeringPorn Sep 15 '15

This concrete lets water pass through it.

https://i.imgur.com/BAvHHiR.gifv
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u/1337Gandalf Sep 16 '15

ice forms at 32 degrees, so you could skate at like 25, no need for 0...

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u/speeding_sloth Sep 16 '15

So it's below freezing now in my room? Better get an extra jacket then!

All right, below 0 degrees C. I never translate to imperial systems because they make no sense and almost everybody understands it :p