C
Cdantz
Guest
Scientifically, how does our planet spin?
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C
crush
Guest
gravity caused "clumps" of matter to coalesce into our protoplanetary disc from an already spinning nebula.
this was the formation of the earth.
since there is very little *outside force* to stop/slow the earth's spin, angular momentum was conserved, and it continues to rotate to this day, 4.6 billion years later.
this was the formation of the earth.
since there is very little *outside force* to stop/slow the earth's spin, angular momentum was conserved, and it continues to rotate to this day, 4.6 billion years later.
J
John F
Guest
The law of the conservation of angular momentum.
C
clearbluesky41
Guest
is Magnetism and gravity of the earth to the distance of the sun and solar system to react to the + and negative force of the rotating mass of our system of planet,s and moon,s
A
Amy Greenhouse
Guest
Angular velocity and angular momentum are both vectors; they have magnitude and direction. The direction of angular velocity is along the rotation axis. If the object is a perfect sphere, the angular momentum vector is also along the rotation axis.
The geodynamo in Earth's core generates a global magnetic field which deflects COSMIC rays. An atmosphere on the hand, blocks out gamma, uv and x-rays. The magnetic field also protects our waters from being photodissociated by solar uv. There are 3 requirements for a geodynamo: 1) molten fluids 2) rotation and 3) convection. The Earth's rotation gives rise to the Coriolis Effect which produces eddy currents in the molten liquid iron/nickel/cobalt core, which in turn generates the "global" magnetic field.
Most of the 160+ moons in our solar system do not spin on their axis. Instead, they are "tidally locked" to their parent planets. Imagine tying a ball with a string to your finger and spinning it around so that the same side is always facing you. Since these moons do not spin on their axis, you wouldn't expect to find natural geodynamos nor a significant magnetic field on them.
Artificial dynamos such as the RIGA or Karlsruhe dynamos would have to be built into them, using molten Sodium (Na). Another possibility is imbedding a superconducting magnetic ring ranging from 2 to 14 Tesla. It would be imbedded a couple of hundred feet under the crust, but not necessarily at the core, which is way deeper. Super pulsed fiber lasers will make lunar excavations a breeze.
Rare earth magnets such as Samarium Cobalt magnets, 1 to 2 Tesla in strength, can be imbedded 5' to 10' under a pressurized dome to provide "local" magnetic fields, protecting about 50 inhabitants from cosmic rays.
Elongated bar magnets strapped onto a spacesuit would provide "mobile" magnetic fields, acting like a cosmic umbrella, shielding you from cosmic rays as you walk and work.
The geodynamo in Earth's core generates a global magnetic field which deflects COSMIC rays. An atmosphere on the hand, blocks out gamma, uv and x-rays. The magnetic field also protects our waters from being photodissociated by solar uv. There are 3 requirements for a geodynamo: 1) molten fluids 2) rotation and 3) convection. The Earth's rotation gives rise to the Coriolis Effect which produces eddy currents in the molten liquid iron/nickel/cobalt core, which in turn generates the "global" magnetic field.
Most of the 160+ moons in our solar system do not spin on their axis. Instead, they are "tidally locked" to their parent planets. Imagine tying a ball with a string to your finger and spinning it around so that the same side is always facing you. Since these moons do not spin on their axis, you wouldn't expect to find natural geodynamos nor a significant magnetic field on them.
Artificial dynamos such as the RIGA or Karlsruhe dynamos would have to be built into them, using molten Sodium (Na). Another possibility is imbedding a superconducting magnetic ring ranging from 2 to 14 Tesla. It would be imbedded a couple of hundred feet under the crust, but not necessarily at the core, which is way deeper. Super pulsed fiber lasers will make lunar excavations a breeze.
Rare earth magnets such as Samarium Cobalt magnets, 1 to 2 Tesla in strength, can be imbedded 5' to 10' under a pressurized dome to provide "local" magnetic fields, protecting about 50 inhabitants from cosmic rays.
Elongated bar magnets strapped onto a spacesuit would provide "mobile" magnetic fields, acting like a cosmic umbrella, shielding you from cosmic rays as you walk and work.