3. Everyone knows the joke of the policeman stopping Heisenberg, who was speeding, and ask him: "Do you know how fast you were going?" Then Heisen- ber replies: "No, but I know exactly where I am." Now let's investigate the truth behind this story in more detail. = Heisenberg was actually late for his quantum mechanics class and was stopped by a police officer for speeding his Merc, weighing 4000 kg, at 200 km/h in downtown Leipzig (Germany). The radar detector measured the speed us- ing the Doppler effect, with an uncertainty of 1%. With what fundamental accuracy could the officer have located Heisenberg's position, if this was mea- sured simultaneously with the speed? Remember that Planck's constant is h = 6.63 x 10-34 J s.

3. Everyone knows the joke of the policeman stopping Heisenberg, who was speeding, and ask him: "Do you know how fast you were going?" Then Heisen- ber replies: "No, but I know exactly where I am." Now let's investigate the truth behind this story in more detail. = Heisenberg was actually late for his quantum mechanics class and was stopped by a police officer for speeding his Merc, weighing 4000 kg, at 200 km/h in downtown Leipzig (Germany). The radar detector measured the speed us- ing the Doppler effect, with an uncertainty of 1%. With what fundamental accuracy could the officer have located Heisenberg's position, if this was mea- sured simultaneously with the speed? Remember that Planck's constant is h = 6.63 x 10-34 J s.