Earths magnetic field Definition and 14 Threads

It has recently sped up to 30 miles per year, prompting a navigational update mostly for the North Pacific and Arctic regions. https://www.japantimes.co.jp/news/2019/01/12/world/science-health-world/north-magnetic-poles-movement-forces-unprecedented-navigation-fix/

Don't know if this is the right place to post this, but it seemed like the best place to start. I'm wondering how much stronger would the Earth's magnetic field need to be in order to make quantum levitation using Earth's magnetic field alone a possibility. Bonus: Effects the change in strength...

Homework Statement Hi! I need to find the opening angle of the loss cone at a given altitude, when the magnetic latitude is 65 deg. Homework Equations See below The Attempt at a Solution First, I used the following equation to calculate the magnetic field at a given altitude...

I was wondering if anyone knew of any research done on if there could be a connection between Earth's magnetic field and some of our planets less understood weather phenomenon like tornadoes and lightning. From my understanding the most excepted theory is that lighting is caused by charged...

Q: Is it possible to generate electricity by locating a coil at one of Earth's magnetic poles? By grounding to the Earth a lead out to a load. Maybe Earth's rotation and the coil at some elevation just off the center of magnetic flux lines entering the earth. Would this cause flux lines to...

Homework Statement A researcher would like to perform an experiment in a zero magnetic field, which means that the field of the Earth must be cancelled. Suppose the experiment is done inside a solenoid of diameter 1.0{\rm m} , length 5.0{\rm m} , with a total of 9000 turns of wire. The...

I have this idea that I could use some electromagents that wen I run current through will repulse the Earth's magnetic field and that the higher voltage(or whatever electrical unti I decide to use) would send and object farther away from the ground and that the lower current would bring it...

How can random electron currents in the Earth's core create a ordered magnetic field? What makes a current in the Earth be north or south what is the difference between a north current and a south one? How come if the magnetic field is strongest at the centre of the planet how come where it...

Hi I have two questions. 1. is all life on Earth reliant on energy from the Earth's magnetic field- Iknow it protects us from solar winds. 2. do astronauts need pemf in their capsules or space staions?

Homework Statement What is the average emf created by a 15 turn cable that is .5 meters in diameter, lies flat with the surface of the Earth and is flipped 180 degrees in 2 seconds? *Assume the Earth produces a magnetic field of .5 micro Tesla. Homework Equations e=-n*r^2*delta...

Since the Earth's magnetic field helps to protect the Earth from a lot of the suns harsh treatments, do we also assume that in some degree light is also (possibly in very small fractions) also diverted by the magnetic field? If no, would it even be possible to assume that a very strong...

I heard that a moving magnet creates a charge in a nearby wire. (can you see where I am going here?) If we were to wrap a gigantic wire around the earth, would we in-fact yield some energy and of what magnitude do you expect that to be?

How do I calculate Earth's magnetic field at a distance x from Earth's surface? Do I have have to think about Earth as a dipole and use the rate at the dipole weakens?

I heard that the Earth's magnetic field changes every few thousands of years? is this true, if it is how does that happen