Fig. 1.
(Color online) Biomagnetometer array. Four magnetometers are symmetrically located in the plane of a field coil. The output P1x of one magnetometer is fed back to actively null B1y. Each channel consists of a heated glass cell (numbered)
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.