Tomorrow morning Venice will sink under a maximum tide predicted to reach 1.30 meters above average sea level. The event will occur at 8.35AM, a time when Venetian residents are in the streets trying to bring children to school or to reach their workplace. You can see the predicted evolution of the tide in the graph below, where the red curve shows the time variation of the season's average, and the blue one the actual prediction for tomorrow. The peak of 130 cm above average sea level is predicted to occur at 8.35AM -which is 2.35AM in New York, or 5.35PM in Tokyo.


What is the size of the universe? How heavy is it? How big can black holes grow? How small are subatomic particles? How many orders of magnitude will I cross when going from the microscopic quantum world to the edge of the universe? Are we humans somewhere in the middle between all these length scales?