Credit: Vincent Dumont, Trevor Bowen, Roger Roglans, Gregory Dobler, Mohit S. Sharma, Andreas Karpf, Stuart D. Bale, Arne Wickenbrock, Elena Zhivun, Thomas Whitmore Kornack, Jonathan S. Wurtele, and Dmitry Budker
Five samples of magnetic field time series at five different locations in Brooklyn. From left to right: (1) Elevator measurements were taken on the 12th floor of Transit Building; (2) Subway measurements were acquired from the Jay Street Metro Tech station; (3) Brooklyn Bridge measurements were taken underneath the bridge; (4) Street measurements were obtained on the sidewalk in front of the Transit Building in downtown Brooklyn; and (5) the Manhattan Bridge measurements were taken on top of the bridge from the middle of the walkway.