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2. Magnetic level gauge - Wikipedia

   en.wikipedia.org/wiki/Magnetic_level_gauge

   The magnetic field is the heart of the magnetic level gauge – the stronger the field, the more reliable the instrument will function. Some manufacturers rely on a single magnet for their magnetic level gauges which causes the strength of the north field to be identical to, and as weak as, the south field.

3. Landau levels - Wikipedia

   en.wikipedia.org/wiki/Landau_levels

   There is some gauge freedom in the choice of vector potential for a given magnetic field. The Hamiltonian is gauge invariant, which means that adding the gradient of a scalar field to A changes the overall phase of the wave function by an amount corresponding to the scalar field. But physical properties are not influenced by the specific choice ...

4. Level sensor - Wikipedia

   en.wikipedia.org/wiki/Level_sensor

   Magnetic float switches are popular for simplicity, dependability and low cost. A variation of magnetic sensing is the "Hall effect" sensor which utilizes the magnetic sensing of a mechanical gauge's indications. In a typical application, a magnetism-sensitive "Hall effect sensor" is affixed to a mechanical tank gauge that has a magnetized ...

5. List of sensors - Wikipedia

   en.wikipedia.org/wiki/List_of_sensors

   Magnetic anomaly detector; Magnetometer; Magnetoresistance; MEMS magnetic field sensor; ... Force gauge and Force Sensor; Level sensor; Load cell; Magnetic level gauge;

6. Magnetometer - Wikipedia

   en.wikipedia.org/wiki/Magnetometer

   Magnetic fields are vector quantities characterized by both strength and direction. The strength of a magnetic field is measured in units of tesla in the SI units, and in gauss in the cgs system of units. 10,000 gauss are equal to one tesla. [1] Measurements of the Earth's magnetic field are often quoted in units of nanotesla (nT), also called ...

7. BMI is wrong way to measure obesity, researchers say - AOL

   www.aol.com/bmi-wrong-way-measure-obesity...

   A group of 58 researchers is calling for a new, better way to measure obesity. The global team’s recommendations were published in The Lancet Diabetes & Endocrinology on Jan. 14. Body mass index ...