Geographic (True) North vs Magnetic North
ฝัง
- เผยแพร่เมื่อ 11 ก.ย. 2024
- Short Video Series (SVS-0017)
Geographic (True) North vs Magnetic North
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📄𝐓𝐞𝐱𝐭:
As you know, the Sun always sets in the west. So, this gives a way of finding the other cardinal directions too - north, south and east. But if you have a compass, you might notice that the north you find according to the Sun, and the north to which the compass points, aren’t exactly the same. The north you find with respect to the Sun is called geographic north or true north, whereas the north shown by the compass is known as magnetic north. And these two norths are different.
Geographic north lies in the direction of the North Pole - the point where Earth's axis of rotation cuts through the surface. This point marks the center of the northern hemisphere and is located in the frozen middle of the Arctic Ocean.
Magnetic north, on the other hand, is the direction of the point on Earth’s surface where Earth’s magnetic field points vertically downward. Because Earth is like a giant magnet, compasses point toward the magnetic poles. These poles are not in fixed positions. Today magnetic north is located near the geographic North Pole. In 1900, though, it was located on Canadian soil and today it’s moving towards Siberia in Russia.
#geographic #north #magnetic
wow such a concise and easy to understand video... Thanks!
The core of the earth has a spinning torus shape of molten iron and other metals. The magnetic poles flip every 600,000 years or so due to the Dzhanibekov effect. The centre of the earth can be almost room temperature because there is no gravity to generate pressure therefore the torus lies on the part of the core where the centrifugal force of the spinning earth matches the gravity force on the offset from the middle of the earth which only happens on the equator. The Dzhanibekov effect causes the torus to develop instability causing a flip in magnetic poles and then a turn to stability. The pressure at the center of earth is not what is currently recognized, it can be cold and solid because there is no pressure.
Recently, i found out that what is actually near the north geographic pole is actually south magnetic pole. I used a compass and a permanent magnet. Placing a compass near a permanent magnet and comparing it to the magnetic field of earth.
The compass needle points to the magnetic north or geographic north pole of earth?
Correct. Magnetic north is actually at the south pole, magnetic south is in the Arctic. This is why the north polarity of the compass points to geographic north - because our southern polarity is actually at the Arctic
@@King_of_Honey_Islandthe north magnet (+) points to magnetic south (-). + and - are the same magnification in a sense - they signify direction. It's why two of the same sides of magnets repel. But if you flip one side they stick together. The electric fields flow in the same direction. One side of a magnet is emitting a field of electrons, the other side is pulling
straight to the point.. cleared my doubt under 2 min.
simple video, easy to understand
thank you so much
Excellently done. Thank you
Isnt magnetic north pole near geological south pole?
Yes 😂.
Scientists should just name geographical poles same as magnetic poles and end this confusion 🙄
simple and good idea
Thank you guy.
You clear my point
Thanks
It's the only pole- it's the center of a plane. Polaris is always directly above.
Why does it move?
Magnetic north is actually in Antarctica 😅 This video even has a true example of the proof. (0:56) + and - are the same - they just signify direction. One side pulls the field, the other pushes it. But it all flows one direction. But north polarity (+) is attracted to south polarity (-). The north direction of a compass uses the north (+) polarity of the magnet. The fact that it points toward the arctic is because that's where the southern magnetic polarity of the planet is. Look at the video 56 seconds in. North emits the field, south pulls in the field. The field flows inside the planet in one direction (toward Antarctica) outside the planet the field travels to the arctic and reenters. The same occurs with magnets but we have them labeled north and south opposite we do the planet 🤣
Wrong!! It is the magnetic SOUTH that is located near the geographic North! Not the magnetic north! And our compass will point it's north arrow in that direction beause it is attracted to the magntic south!
Magnetic north-south isn’t the direction of magnetic field, it is what compass points at (more precisely where compass points straight down when freely suspended). So, magnetic north IS near the geographical north pole.
Some places say the opposite, just check wikipedia for more info.
@@anamikathakur540 Wikipedia is full of shit. Always has been. You believe the sources you want. There are plenty of sources claiming what I just told earlier.
@@anamikathakur540the Nile flows south.
It was just easier to use compass with map if both north on top but tha Compass north is attracted to earth south in reality.
"...will point **ITS** [no apostrophe] north arrow..."
@@CT2507 Well Wikipedia is saying what you are saying, idk what he is on about
Please tell me the name of place where present north pole exists
The North Pole is found in the Arctic Ocean
at least explain this with a compass... omg so little info. the printed map follow true north or magnetic ?
Geographic north = based on earths rotation axis
I don't think whats been said in this video is right. Direction in which sunsets is not the true geographical west as the sun keeps drifting between latitudes.
You are right, actually we had put a text on the left top corner of the screen that says "During the equinoxes" I think an error occurred during render and the text disappeared. Yes sunset dates are important and that should be at the time of the equinoxes (about March 21 and Sept 21). On this dates the sun will set exactly west, all over the planet.
Question
Is the north of compass, the south magnetic pole?
Yes. All magnets have two poles, where the lines of magnetic flux enter and emerge. By analogy with Earth's magnetic field, these are called the magnet's "north" and "south" poles. The north-seeking pole of a magnet was defined to have the north designation, according to their use in early compasses. Because opposite poles attract, this means that as a physical magnet, the magnetic north pole of the earth is actually on the southern hemisphere!
Use a compass and place it near a permanent magnet. You'll notice that the north of compass is not actually north.
Yes. A better way to visualize it is how we define + and - when describing polarity. There is no difference between + and - except the flow of direction. On a magnet north (+) is + because it's emmiting the field. It reenters on the other side (-) and flows through the magnet to the other side. But, for whatever reason we didn't geographically label the planet's north and south polarities the same way we did magnets. Watch the video 56 seconds in to see what I mean. + Pushes in antarctica and - pulls in the Arctic 🤣
The pole is moving??? Wtf
Flat earthers unite!! Lolol 😂
Try telling Killateral Damage your lies about the compass & north not being fixed magnet pole 😂😂
Nothing in this video is true or matches reality. A compass doesn’t work with 2 magnets, must be flat to function properly, has 1 fixed constant pull direction “N” & only exists to measure circles around 1 fixed center magnet.