Encyclopedia: Magnetometer
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A magnetometer is a scientific instrument used to measure the strength and/or direction of the magnetic field in the vicinity of the instrument. Earth's magnetism varies from place to place and diffe...
en.wikipedia.org/wiki/Magnetometer
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A magnetometer operates like a sensitive compass and senses these slight changes. The soda bottle magnetometer is a simple device that can be built for under $5.00 which will let students monitor these changes in the magnetic field that occur inside the classroom.
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image.gsfc.nasa.gov/poetry/workbook/page9.html
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Bartington Instruments is a world leader in the design and manufacture of magnetic measurement instrumentation. Three-Axis Fluxgate Magnetometers; Magnetic field sensors for three-axis measurement up to 1mT, and from DC to 12kHz. These fluxgate sensors are A Borehole Magnetic Susceptibility Tool is also available.
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Billingsley aerospace designs low noise fluxgate magnetometers, gradiometers, and calibration systems for spacecraft attitude control, industrial, military, and scientific applications. Billingsley Aerospace & Defense, Inc. BA&D is widely recognized by respected members of the scientific community. For example,
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www.magnetometer.com/
www.magnetometer.com/
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Description: PNI Corp's 3-axis magnetometer. Ready for the big time? Low noise, large resolution magnetic field sensing all packed into a user-friendly DIP module at your disposal. Stable over a wide temperature range, the MicroMag3 is a must have for orientation sensing and navigation.
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www.sparkfun.com/commerce/product_info.php?products_id=...
www.sparkfun.com/commerce/product_info.php?products_id=244
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Your Magnetometer and Magnetic Sensor Resource; GEM Advanced Magnetometers is a proven supplier of magnetometers, gradiometers, & magnetic sensors for Earth Science, Geophysics and other applications. Advanced Quantum Magnetometer Technologies; Quantum magnetometers are a class of magnetometers that take advantage of...
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Our source says this is obviously for a built-in magnetometer in the upcoming iPhone hardware revision and with what’s already been reported, we’d have to agree. One more image after the break!
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www.boygeniusreport.com/2009/05/07/magnetometer-in-next...
www.boygeniusreport.com/2009/05/07/magnetometer-in-next-iphone-confirmed/
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BoyGeniusReport posts a screenshot from debugging menus in the 3.0 beta firmware which seems to confirm that Apple has built-in magnetometer (digital compass) support into the operating system. Thursday May 07, 2009 09:33 PM EST; Category: iPhone; Written by Arnold Kim Recent MacRumors Stories...
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www.macrumors.com/2009/05/07/digital-compass-magnetomet...
www.macrumors.com/2009/05/07/digital-compass-magnetometer-confirmed-in-next-iphone/
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Absolute measurements are made by proton-precession magnetometer (magnitude) and by small magnets suspended on torsion fibres (direction). Readings are made about twice a month.
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