Dynamo Theory of Earth's Magnetism | Why does Earth have a Magnetic Field Magnetism UPSC

[@poojajain2215]

Being a visual person, I have always wondered how the electromagnetic waves work through a means of graphic representation. When I saw this, my mind was blown away. This might be the only accurate visual representation on this concept available on the internet so far. I am so grateful to you to make this video with such painstakingly beautiful graphics l. thank you so much sir for clarifying all my doubts.

[@veitheld167]

There is something missing here: All these explanations start with explaining the convection mechanisms. However, if there are complete masses of iron flowing around, then nothing should happen, because if a whole iron atom moves then the positive core and the negative electrons in the shell move together with the same velocity. That means that the electrodynamic effects cancel out. In motors that is different, because in a wire the copper cores stay in place, while the electrons are moving through the wire. In other words, we only need to consider the moving negative electrons to explain the forces. If there is a magnetic field emerging from the earths core then we should see independant movements of the electrons and the cores of the atoms.

[@SyedNomaan-v1y]

All right I did a little research. To understand the dynamo effect, first we have to understand two things thatthe initial magnetic field originated from remnant magnetism of the solar nebula and at the same time convection current were flowing, which then induced even more electromagnetic fields due to the concept of electromagnetic induction

[@BATMAN-yx1je]

Thank you very much sir!! Very helpful in getting conceptual clarity.

[@Chauhan_Harshita]

Very lucidly explained 😊Thank you so much!

[@fatimaartsmagic_oct4]

Awesome 😎

[@rakeshverma2924]

Beautifully explained

[@BhaktaBhusanDas]

You made everything crystal clear.

[@famanzoha2581]

Thank u so much sir ....I got perfection in my imagination through your awesome vedio ...😊😘😘😘

[@lowercase18]

And how do you know what's inside the earth?

[@Princeosi5588]

Finally, I thought I was crazy 😂 have they been to the earths core yet ?

[@creatorzone4143]

​@@Princeosi5588the same way we know about the big bang, universe expansion etc. they are hypothesis or theory

[@naveenpandit5325]

Thanku so much sir for this Amazing explanation.

[@manisingh3645]

Literally great explanation

[@KnowledgeMediaMD]

Thanks a lot!

[@GrayGhosting]

You don't explain how convection currents of molten Fe and Ni can produce a magnetic field. Where is the movement of net charge?

[@danielslegend5836]

Should this iron and nickel stuff not lose its magnetic properties at the curie temperature?

[@rehmangamingyt4299]

Yeah they have to,nice question

[@rehmangamingyt4299]

Imean because of massive amount of temperature how could nothing happens to them

[@sukhmanipaulkaur1020]

Shukriya ❤

[@rjayamaal]

Thank you

[@SuMiTKuMaR4113]

Not getting it at all.. for a generator we need a fixed permanent magnets on outer and rotating bars in it and of we apply kinetic energy its generates electricity in bars and that creates megnetic field.. but where are that permanent magnets in the core ..

[@mathlover3916]

I must say u are genius

[@animeshrose]

Why those electrons/charge were excited in the very first place?

[@randomstuff9960]

Exactly my question...

[@animeshrose]

@@randomstuff9960 probably Radioactivity is the reason.

[@simonlaker2139]

Hamsters. There's milions of hamsters inside, turning the centre.