Installation of an iGrav superconducting gravimeter in November 2022 in the Ahr Mountains near Bonn, Germany.
The heart of the instrument is a Niobium sphere that levitates in a magnetic field at just 4 Kelvin, i.e., minus 269 degrees Celsius.
The system is designed to observe variations in the gravity field less than a Billionth of normal gravity (9.8 m/s²). This is an equivalent to the gravitational attraction of a water layer of just a couple of millimeters thin. The green curves that appear on the monitor later in the video show the effect of lunar and solar tides.
Негізгі бет Superconducting gravimeter to measure less than a Billionth of normal gravity
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