NIST Mini-Sensor Traces Faint Magnetic Signature of Human Heartbeat (IMAGE)

National Institute of Standards and Technology (NIST)

NIST Mini-Sensor Traces Faint Magnetic Signature of Human Heartbeat

Caption

NIST's miniature magnetic sensor is about the size of a sugar cube. The lid has been removed to show the inner square cell, which contains a gas of rubidium atoms. The diagonal bar is an electrical connection to the cell's heaters, which are powered by the red, black and white electrical wires. The clear optical fiber extending from the middle bottom of the sensor connects to a control box.

Credit

S. Knappe/NIST

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