Ewing's Molecular theory of Magnetism - Science
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- เผยแพร่เมื่อ 27 ส.ค. 2024
- This is a science video for grade 8-9 students that talks about Molecular Theory of magnestism proposed by Ewing which states that every molecule of a magnetic substance behaves as a tiny magnet called molecular magnet.
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At the Physical level, the relative magnetic density (aka - Flux Density) of a magnet is NOT equal at both ends. Magnets have a very slight but measurable difference between the N (North) and S (South) poles. The North pole has a slightly higher magnetic "Push" effect than the South pole. Conversely, the South pole has a slightly higher "Pull" effect than does the North pole. This can be observed readily in the Earth's magnetic field motion by comparing the
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if this the way you explain and you become a teacher, everyone in your class would be fallin asleep
Its your inner self that needs to motivate yourself to listen. hopefully you started listening for yourself, finally. self efficacy
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Aurora Borealis of the North and South poles. The North pole pushes material out of our atmosphere into space like an exhaust port while at the same time the South pole acts like a magnetic intake for new material. This new material is pulled out of the Solar Wind and from Coronal Mass Ejections (CMEs) from our sun. Hence the reason the Earth stays the same size and mass and does not grow or shrink.
Also, you CAN create a permanent magnetic field in Iron and Steel by
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striking one end of, lets say, an Iron or Steel rod or Bar. This is due to sudden molecular redistribution and alignment. While this technique does create a magnet, it is a very weak magnet at best. Rubbing a magnets North or South pole along a steel rod (like a screwdriver's shaft) will magnetize the shaft, it's only a temporary effect. But collapsing a magnetic field around that screwdriver's steel shaft will create a strong, permanent magnet. You can also DE-magnetize it by
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i love how this video is in pi length
No it is 3.13
I love the comments under this video. keep being weird everyone, I support it.
@rsrproductions yes I know it is 3.14 and there is no need to call me a douchebag. From the looks of it, different applications seem to show the length of the video differently by one or two second. I'm guessing that yours is 3:13, but my iPod says 3:12, and my computer says 3.14. That's why I posted the original comment saying that this video's length is pi length.
whether the dipole orientation is straight lines or parallel lines??
What is the cause of N and S in atoms of magnet
Same
Great explanation
Thank you so much
very useful
whether the dipole orientation is straight lines or parallel lines??
Google it if u not sure
And he's wrong about a few things.
At the molecular level, ferrous materials (like Iron, Steel, Strontium and Boron) actually STOP behaving like magnets. Ewing's (pronounced Eww-ing. Not EEE-wing) assumption that magnetic materials is his Assumption based on the OBSERVABLE effects. Since Ewing's days, we've created things like Super-Colliders and Magnetic Mass Spectrometers. We know that the Magnetic nature of ferrous materials stops at the molecular level.
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And still no one knows what magnetism is.
Thankyouuu
It's not
Np❤
a kind of a strange name ewing lol
whether the dipole orientation is straight lines or parallel lines??
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either reversing the coil windings (so the current flow continues in the same direction but the magnetic field is reversed) or by repositioning the screwdriver tip 180 degrees (tip to handle) and collapsing the magnetic field again.
Either way will result in the screwdriver being DE-magnetized.
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Now, whoever made this video should not teach. This video is full of out-dated and incorrect data. Teaching these misconceptions will insure your students fail when applied in real world.
whether the dipole orientation is straight lines or parallel lines??
who are you
Molecular Theory of Magnetism / चुंबकत्व का आणविक सिद्धांत th-cam.com/video/3wCHzI2hfNQ/w-d-xo.html
It's magnets... all the way down?
OTH that's a pretty rubbish explanation.