最強の磁力 ネオジム磁石／The Strongest Magnetic Force: Neodymium Magnets
276.4 هزار بار بازدید -
2 سال پیش
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DENJIRO: Everyone, can you guess
DENJIRO: Everyone, can you guess what this object I have here is?
BOY: What is that?
DENJIRO: Let me bring it close to these paper clips.
BOY: Wow!
DENJIRO: Incredible, no? This is a neodymium magnet. It has the strongest magnetic force. Today, I’ll perform an experiment using this magnet.
I have here a copper plate. Let me drop the neodymium magnet on it. It falls normally. Now, what if I drop it on this thick copper plate?
BOY: It moved in a strange way!
DENJIRO: This phenomenon occurs due to the neodymium magnet’s strong magnetic force. When the magnet approaches the copper plate, the magnetic force generates an electric current in the plate. That current generates a magnetic force in the plate. Because of this, the magnetic forces from the magnet and the copper plate repel. That is why the magnet slows down before landing. The thicker the copper plate, the stronger this effect becomes.
Now let me try to remove the magnet from the copper plate... This time, a magnetic force that attracts the magnet is generated within the copper plate. This makes it impossible to quickly pick up the magnet.
Let me show you another interesting phenomenon. I have neodymium magnets attaching to each other with a copper plate in between. When I slowly lift the magnet on top...
BOY: The magnet floated!
DENJIRO: Without the copper plate, the neodymium magnets will instantly stick to each other. But when the magnet approaches the plate, a repelling magnetic force is generated. On the contrary, when you try to pull the magnet away, an attracting magnetic force is generated. Therefore, by carefully controlling the distance between the magnet and copper plate, you can make the magnet on the bottom float.
I hope energy will bring you all happiness. Our magic word is "Happy Energy!"
BOY: What is that?
DENJIRO: Let me bring it close to these paper clips.
BOY: Wow!
DENJIRO: Incredible, no? This is a neodymium magnet. It has the strongest magnetic force. Today, I’ll perform an experiment using this magnet.
I have here a copper plate. Let me drop the neodymium magnet on it. It falls normally. Now, what if I drop it on this thick copper plate?
BOY: It moved in a strange way!
DENJIRO: This phenomenon occurs due to the neodymium magnet’s strong magnetic force. When the magnet approaches the copper plate, the magnetic force generates an electric current in the plate. That current generates a magnetic force in the plate. Because of this, the magnetic forces from the magnet and the copper plate repel. That is why the magnet slows down before landing. The thicker the copper plate, the stronger this effect becomes.
Now let me try to remove the magnet from the copper plate... This time, a magnetic force that attracts the magnet is generated within the copper plate. This makes it impossible to quickly pick up the magnet.
Let me show you another interesting phenomenon. I have neodymium magnets attaching to each other with a copper plate in between. When I slowly lift the magnet on top...
BOY: The magnet floated!
DENJIRO: Without the copper plate, the neodymium magnets will instantly stick to each other. But when the magnet approaches the plate, a repelling magnetic force is generated. On the contrary, when you try to pull the magnet away, an attracting magnetic force is generated. Therefore, by carefully controlling the distance between the magnet and copper plate, you can make the magnet on the bottom float.
I hope energy will bring you all happiness. Our magic word is "Happy Energy!"
2 سال پیش
در تاریخ 1401/09/14 منتشر شده
است.
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