Aharonov–Bohm effect
Videos
The Aharonov–Bohm effect, sometimes called the Ehrenberg–Siday–Aharonov–Bohm effect, is a quantum-mechanical phenomenon in which an electrically charged particle is affected by an electromagnetic pote
Yakir Aharonov
David Bohm
SQUID
Videos
A SQUID is a very sensitive magnetometer used to measure extremely weak magnetic fields, based on superconducting loops containing Josephson junctions.
Aharonov–Bohm effect
…through CDW rings up to 85 μm in circumference above 77 K. This behavior is similar to that of the superconducting quantum interference devices (see SQUID). The Aharonov–Bohm effect can be understood from the fact that one can only measure absolute values of the wave function. While this allows for…
Sensing element of a SQUID, 2008
A prototype SQUID
The inner workings of an early SQUID, circa 1990