A Scam? Life Coaches have been the subject of jokes in pop culture for quite a while. But now the unregulated, untrained life coaching industry is the subject of scrutiny, thanks to a class-action lawsuit now in colorado courts. Married couple Coral Rose Grant and Gary McGonagle Mac Grant II ran a life coaching business in Winsor Colorado.
: Magnetometers detect ferrous metals that could be attracted by a magnet. Steel, iron and iron rich rocks. A good way to remember this is that ferrous metals (detectable) rust or stain yellow/orange. Magnetometers will not detect or see nonferrous metals. Gold, silver, lead, copper, aluminum, and some stainless steel. (This makes the underwater mag indispensable for weapon searches). Aluminum cans and pull tabs are not detected.
1.1 The proton precession magnetometer. A proton precession magnetometer ( PPM ) is one of the most accurate devices that you can build for measuring magnetic fields. A PPM takes advantage of the fact that protons have an intrinsic magnetic field, much like an exceedingly small magnet. When the protons are placed in an external magnetic field, the direction of their field will precess (rotate) about the direction of the external field.