The satellite mounted magnetometers that this video refers to, are specifically fluxgate magnetometers. They don't mention that in this video, but if they weren't fluxgate devices, they would not be able to provide field direction as well as magnitude. MagSat and Oersted and Explorer X were the only satellites that I know of that had scallar magnetometers, specifically a rubidium mag in Explorer X, and a cesium mag in MagSat and in Oersted. Rubidium and cesium alkaline vapor oscillator mags don't give you Field direction, but they are much more sensitive than the fluxgate types. For absolute value, the alkali vapor mags are second to none even to this day. For the money spent though to send up satellites and deep space probes like the Voyagers, scientists are usually willing to sacrifice a little bit of sensitivity in order to gain field directions data, so for that reason, fluxgate magnetometers are what most spacecraft have used.
@goodintensions Its not a holographic computer, its computer effects (think FX used in the film: Minority Report). However you may be interested to learn that holographic technology has had a breakthrough only a few weeks ago. Look for a scientist named " Nasser Peyghambarian " on google :)
@tulsaguy1974 we know our poles switch by looking at rock layers of our earth. As for other planets I'm not sure. The sun's magnetic poles switch every 11 years though.
@tulsaguy1974 Yeah, molten rock will magnetize in the direction of the field around it, but when it becomes solid the magnetic field around it won't affect its magnetic direction. So yeah, deeper layers = older rocks = way back when magnetic pole was different
I hope the study of earth's magnetosphere for spacecraft that can create their own magnetosphere to protect from galactic cosmic and solar wind radiation that endanger humans taking trips and settling bodies outside earth's magnetosphere.
