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Physicus Hints
How do I open the door?
1 of 6: Pull down the grey panel to reveal another code lock.
2 of 6: Have you been down to the pier on the Beach?
3 of 6: There's a message in a bottle there.
4 of 6: It says to think of the density of chlorine. Read the Mechanics section on your laptop.
5 of 6: The density of chlorine is 3.214 mg/cubic mL. To enter this on the door, put in the numbers and move the comma between the 3 and the 2 (this is a European game, so it uses a comma instead of a decimal point).
6 of 6: Close the grey panel and push the orange button.