▲ 482 ▼ Frequency Rule (feddit.de) submitted 3 years ago by einfach_orangensaft@feddit.de to c/science_memes@mander.xyz 34 comments fedilink hide all child comments
[–] TheLobotomist@mander.xyz 58 points 3 years ago (29 children) Can someone explain please? permalink fedilink source hideshow 29 child comments replies: [–] zkfcfbzr@lemmy.world 188 points 3 years ago (11 children) Spinning it at 1575.42 Million RPS would create a 1575.42 MHz radio wave. That specific frequency is used by the GPS - so by doing this you'd be interfering with the reception of GPS signals, which is the illegal act you'd go to jail for here. permalink fedilink source parent hideshow 11 child comments replies: [–] Black_Gulaman@lemmy.dbzer0.com 26 points 3 years ago Thanks! TIL permalink fedilink source parent [–] Mothra@mander.xyz 21 points 3 years ago (5 children) Wow thanks. Amazing the things that are supposed to be common knowledge permalink fedilink source parent hideshow 5 child comments replies: [–] zkfcfbzr@lemmy.world 36 points 3 years ago Definitely not common knowledge, I had to google to find out what that frequency was used for permalink fedilink source parent [–] Zron@lemmy.world 18 points 3 years ago (2 children) The only people who would consider this common knowledge would be ham radio operators, who need to be licensed. And even those people would probably just consider it common knowledge for people that are into ham radio. permalink fedilink source parent hideshow 2 child comments replies: [–] socsa@lemmy.ml -5 points 3 years ago (1 child) This is electrical engineering deletion. HAMS don't know shit anyway. permalink fedilink source parent hideshow 1 child comment replies: [–] Zron@lemmy.world 9 points 3 years ago I recognize all those words are English, and yet I have no idea what you’re trying to say permalink fedilink source parent [–] swirle13@startrek.website 7 points 3 years ago Says who? permalink fedilink source parent [–] socsa@lemmy.ml 11 points 3 years ago* It wouldn't actually generate any useable electric fields without a coil of wire. Then you'd have a shitty magneto. permalink fedilink source parent [–] TheLobotomist@mander.xyz 4 points 3 years ago Thank you so much! permalink fedilink source parent [–] zepheriths@lemmy.world 3 points 3 years ago (1 child) I am going to assume this is an amendment to the original law. Because GPS didn't exist in 1934. permalink fedilink source parent hideshow 1 child comment replies: [–] ignotum@lemmy.world 1 point 2 years ago No it was there from the beginning, they were people of great forethought you see permalink fedilink source parent [–] RobotZap10000@feddit.nl 29 points 3 years ago (16 children) The magnets spinning at that speed creates a frequency which can interfere with other radio signals. permalink fedilink source parent hideshow 16 child comments replies: [–] CookieJarObserver@sh.itjust.works 10 points 3 years ago (1 child) ⠀⠀⠀⠀⠀⠀⠀⢀⡔⠋⢉⠩⡉⠛⠛⠛⠉⣉⣉⠒⠒⡦⣄⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⢀⠎⠀⠀⠠⢃⣉⣀⡀⠂⠀⠀⠄⠀⠀⠀⠀⢱⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⡰⠟⣀⢀⣒⠐⠛⡛⠳⢭⠆⠀⠤⡶⠿⠛⠂⠀⢈⠳⡀⠀⠀⠀⠀ ⠀⠀⠀⠀⢸⢈⢘⢠⡶⢬⣉⠉⠀⠀⡤⠄⠀⠀⠣⣄⠐⠚⣍⠁⢘⡇⠀⠀⠀⠀ ⠀⠀⠀⠀⠈⢫⡊⠀⠹⡦⢼⣍⠓⢲⠥⢍⣁⣒⣊⣀⡬⢴⢿⠈⡜⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠹⡄⠀⠘⢾⡉⠙⡿⠶⢤⣷⣤⣧⣤⣷⣾⣿⠀⡇⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠘⠦⡠⢀⠍⡒⠧⢄⣀⣁⣀⣏⣽⣹⠽⠊⠀⡇⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠑⠪⢔⡁⠦⠀⢀⡤⠤⠤⠄⠀⠠⠀⡇⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠑⠲⠤⠤⣀⣀⣀⣀⣀⠔⠁ permalink fedilink source parent hideshow 1 child comment replies: [–] DavidGarcia@feddit.nl 15 points 3 years ago my dude single handedly collapsing all the superpositions of all the cookie jars permalink fedilink source parent [–] lowleveldata@programming.dev -1 points 3 years ago (13 children) Does it tho? It's basically an electric generator permalink fedilink source parent hideshow 13 child comments replies: [–] ChapolinColoradoNZ@lemmy.world 16 points 3 years ago (11 children) It wouldn't produce anything. For magnets to induce electricity they require a conductor and air isn't one, at least not a good enough one. Without electrical current, there's no voltage, nor constant or oscillating kind of current and therefore no radio frequencies. An electronic crystal and a handful of components could. permalink fedilink source parent hideshow 11 child comments replies: [–] nothacking@discuss.tchncs.de 7 points 3 years ago* (last edited 3 years ago) (3 children) No. Electromagnetic radiation. It doesn't need a conductor. Think of it as a loop antenna except instead of a coil of wire generating the field a permanent magnet does. An electric field is produced by any moving magnet, all a nearby conductor does is provides easily movable electrons that can flow in response to it. permalink fedilink source parent hideshow 3 child comments replies: [–] ChapolinColoradoNZ@lemmy.world 1 point 3 years ago (1 child) So are you saying that a fidget spinner equipped with a couple of magnets and spun fast enough to generate that radio frequency can interfere with a purpose built radio broadcasting antenna set for the same (or resonant) frequency? In other terms, it will be able to radiate enough mV over the air to disrupt it? permalink fedilink source parent hideshow 1 child comment replies: [–] nothacking@discuss.tchncs.de 5 points 3 years ago The fast enough part is key. To generate a signal on the AM broadcast band you would have to rotate it at 800 thousands rotations per second. As for being able to interfere, radio signals are often in the microvolt/m range by the time they reach the reciver, and a strong magnet can produce a few volts in a small (10-20 turns) coil just being moved by hand. If you somehow managed to get a magnet spining at the 1575 million rotations per second as in the meme (without it disintegrating on contact with air, or getting ripped apart, or turning the air to plasma), it would produce massive amounts of field, tens of thousands of volts per meter. GPS signals are actually especially weak, as low as 0.3 uV/m. permalink fedilink source parent [+] socsa@lemmy.ml 1 point 3 years ago* (last edited 3 years ago) [deleted] permalink fedilink source parent [–] Bwaz@kbin.social 4 points 3 years ago (1 child) Electricity isn't the same as electromagnetic radiation. A varying magnetic field induces a varying electric field which radiates into space as an EM wave. See Maxwell's equations. permalink fedilink source parent hideshow 1 child comment replies: [–] ChapolinColoradoNZ@lemmy.world 0 points 3 years ago Please describe "as if I'm 5yo" how a radio broadcasting antenna works? Thanks! =) permalink fedilink source parent [–] lowleveldata@programming.dev 3 points 3 years ago (4 children) they require a conductor Well I mean, he's holding it in his hand... permalink fedilink source parent hideshow 4 child comments replies: [–] Cannizzaro@feddit.ch 2 points 3 years ago (3 children) They mean a conducting medium like an electrolyte permalink fedilink source parent hideshow 3 child comments replies: [–] swab148@lemm.ee 2 points 3 years ago (2 children) Like Gatorade? permalink fedilink source parent hideshow 2 child comments replies: [–] blanketswithsmallpox@kbin.social 3 points 3 years ago It's got what rotating magnets crave. permalink fedilink source parent [–] Scruffy_Nerfherder@exploding-heads.com 3 points 3 years ago More like Brawndo. It's got what you crave. permalink fedilink source parent [–] douglasg14b@beehaw.org 1 point 3 years ago* That's not how that works... The magnets aren't being moved across conductors to induce currents. permalink fedilink source parent
[–] zkfcfbzr@lemmy.world 188 points 3 years ago (11 children) Spinning it at 1575.42 Million RPS would create a 1575.42 MHz radio wave. That specific frequency is used by the GPS - so by doing this you'd be interfering with the reception of GPS signals, which is the illegal act you'd go to jail for here. permalink fedilink source parent hideshow 11 child comments replies: [–] Black_Gulaman@lemmy.dbzer0.com 26 points 3 years ago Thanks! TIL permalink fedilink source parent [–] Mothra@mander.xyz 21 points 3 years ago (5 children) Wow thanks. Amazing the things that are supposed to be common knowledge permalink fedilink source parent hideshow 5 child comments replies: [–] zkfcfbzr@lemmy.world 36 points 3 years ago Definitely not common knowledge, I had to google to find out what that frequency was used for permalink fedilink source parent [–] Zron@lemmy.world 18 points 3 years ago (2 children) The only people who would consider this common knowledge would be ham radio operators, who need to be licensed. And even those people would probably just consider it common knowledge for people that are into ham radio. permalink fedilink source parent hideshow 2 child comments replies: [–] socsa@lemmy.ml -5 points 3 years ago (1 child) This is electrical engineering deletion. HAMS don't know shit anyway. permalink fedilink source parent hideshow 1 child comment replies: [–] Zron@lemmy.world 9 points 3 years ago I recognize all those words are English, and yet I have no idea what you’re trying to say permalink fedilink source parent [–] swirle13@startrek.website 7 points 3 years ago Says who? permalink fedilink source parent [–] socsa@lemmy.ml 11 points 3 years ago* It wouldn't actually generate any useable electric fields without a coil of wire. Then you'd have a shitty magneto. permalink fedilink source parent [–] TheLobotomist@mander.xyz 4 points 3 years ago Thank you so much! permalink fedilink source parent [–] zepheriths@lemmy.world 3 points 3 years ago (1 child) I am going to assume this is an amendment to the original law. Because GPS didn't exist in 1934. permalink fedilink source parent hideshow 1 child comment replies: [–] ignotum@lemmy.world 1 point 2 years ago No it was there from the beginning, they were people of great forethought you see permalink fedilink source parent
[–] Black_Gulaman@lemmy.dbzer0.com 26 points 3 years ago Thanks! TIL permalink fedilink source parent
[–] Mothra@mander.xyz 21 points 3 years ago (5 children) Wow thanks. Amazing the things that are supposed to be common knowledge permalink fedilink source parent hideshow 5 child comments replies: [–] zkfcfbzr@lemmy.world 36 points 3 years ago Definitely not common knowledge, I had to google to find out what that frequency was used for permalink fedilink source parent [–] Zron@lemmy.world 18 points 3 years ago (2 children) The only people who would consider this common knowledge would be ham radio operators, who need to be licensed. And even those people would probably just consider it common knowledge for people that are into ham radio. permalink fedilink source parent hideshow 2 child comments replies: [–] socsa@lemmy.ml -5 points 3 years ago (1 child) This is electrical engineering deletion. HAMS don't know shit anyway. permalink fedilink source parent hideshow 1 child comment replies: [–] Zron@lemmy.world 9 points 3 years ago I recognize all those words are English, and yet I have no idea what you’re trying to say permalink fedilink source parent [–] swirle13@startrek.website 7 points 3 years ago Says who? permalink fedilink source parent
[–] zkfcfbzr@lemmy.world 36 points 3 years ago Definitely not common knowledge, I had to google to find out what that frequency was used for permalink fedilink source parent
[–] Zron@lemmy.world 18 points 3 years ago (2 children) The only people who would consider this common knowledge would be ham radio operators, who need to be licensed. And even those people would probably just consider it common knowledge for people that are into ham radio. permalink fedilink source parent hideshow 2 child comments replies: [–] socsa@lemmy.ml -5 points 3 years ago (1 child) This is electrical engineering deletion. HAMS don't know shit anyway. permalink fedilink source parent hideshow 1 child comment replies: [–] Zron@lemmy.world 9 points 3 years ago I recognize all those words are English, and yet I have no idea what you’re trying to say permalink fedilink source parent
[–] socsa@lemmy.ml -5 points 3 years ago (1 child) This is electrical engineering deletion. HAMS don't know shit anyway. permalink fedilink source parent hideshow 1 child comment replies: [–] Zron@lemmy.world 9 points 3 years ago I recognize all those words are English, and yet I have no idea what you’re trying to say permalink fedilink source parent
[–] Zron@lemmy.world 9 points 3 years ago I recognize all those words are English, and yet I have no idea what you’re trying to say permalink fedilink source parent
[–] socsa@lemmy.ml 11 points 3 years ago* It wouldn't actually generate any useable electric fields without a coil of wire. Then you'd have a shitty magneto. permalink fedilink source parent
[–] TheLobotomist@mander.xyz 4 points 3 years ago Thank you so much! permalink fedilink source parent
[–] zepheriths@lemmy.world 3 points 3 years ago (1 child) I am going to assume this is an amendment to the original law. Because GPS didn't exist in 1934. permalink fedilink source parent hideshow 1 child comment replies: [–] ignotum@lemmy.world 1 point 2 years ago No it was there from the beginning, they were people of great forethought you see permalink fedilink source parent
[–] ignotum@lemmy.world 1 point 2 years ago No it was there from the beginning, they were people of great forethought you see permalink fedilink source parent
[–] RobotZap10000@feddit.nl 29 points 3 years ago (16 children) The magnets spinning at that speed creates a frequency which can interfere with other radio signals. permalink fedilink source parent hideshow 16 child comments replies: [–] CookieJarObserver@sh.itjust.works 10 points 3 years ago (1 child) ⠀⠀⠀⠀⠀⠀⠀⢀⡔⠋⢉⠩⡉⠛⠛⠛⠉⣉⣉⠒⠒⡦⣄⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⢀⠎⠀⠀⠠⢃⣉⣀⡀⠂⠀⠀⠄⠀⠀⠀⠀⢱⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⡰⠟⣀⢀⣒⠐⠛⡛⠳⢭⠆⠀⠤⡶⠿⠛⠂⠀⢈⠳⡀⠀⠀⠀⠀ ⠀⠀⠀⠀⢸⢈⢘⢠⡶⢬⣉⠉⠀⠀⡤⠄⠀⠀⠣⣄⠐⠚⣍⠁⢘⡇⠀⠀⠀⠀ ⠀⠀⠀⠀⠈⢫⡊⠀⠹⡦⢼⣍⠓⢲⠥⢍⣁⣒⣊⣀⡬⢴⢿⠈⡜⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠹⡄⠀⠘⢾⡉⠙⡿⠶⢤⣷⣤⣧⣤⣷⣾⣿⠀⡇⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠘⠦⡠⢀⠍⡒⠧⢄⣀⣁⣀⣏⣽⣹⠽⠊⠀⡇⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠑⠪⢔⡁⠦⠀⢀⡤⠤⠤⠄⠀⠠⠀⡇⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠑⠲⠤⠤⣀⣀⣀⣀⣀⠔⠁ permalink fedilink source parent hideshow 1 child comment replies: [–] DavidGarcia@feddit.nl 15 points 3 years ago my dude single handedly collapsing all the superpositions of all the cookie jars permalink fedilink source parent [–] lowleveldata@programming.dev -1 points 3 years ago (13 children) Does it tho? It's basically an electric generator permalink fedilink source parent hideshow 13 child comments replies: [–] ChapolinColoradoNZ@lemmy.world 16 points 3 years ago (11 children) It wouldn't produce anything. For magnets to induce electricity they require a conductor and air isn't one, at least not a good enough one. Without electrical current, there's no voltage, nor constant or oscillating kind of current and therefore no radio frequencies. An electronic crystal and a handful of components could. permalink fedilink source parent hideshow 11 child comments replies: [–] nothacking@discuss.tchncs.de 7 points 3 years ago* (last edited 3 years ago) (3 children) No. Electromagnetic radiation. It doesn't need a conductor. Think of it as a loop antenna except instead of a coil of wire generating the field a permanent magnet does. An electric field is produced by any moving magnet, all a nearby conductor does is provides easily movable electrons that can flow in response to it. permalink fedilink source parent hideshow 3 child comments replies: [–] ChapolinColoradoNZ@lemmy.world 1 point 3 years ago (1 child) So are you saying that a fidget spinner equipped with a couple of magnets and spun fast enough to generate that radio frequency can interfere with a purpose built radio broadcasting antenna set for the same (or resonant) frequency? In other terms, it will be able to radiate enough mV over the air to disrupt it? permalink fedilink source parent hideshow 1 child comment replies: [–] nothacking@discuss.tchncs.de 5 points 3 years ago The fast enough part is key. To generate a signal on the AM broadcast band you would have to rotate it at 800 thousands rotations per second. As for being able to interfere, radio signals are often in the microvolt/m range by the time they reach the reciver, and a strong magnet can produce a few volts in a small (10-20 turns) coil just being moved by hand. If you somehow managed to get a magnet spining at the 1575 million rotations per second as in the meme (without it disintegrating on contact with air, or getting ripped apart, or turning the air to plasma), it would produce massive amounts of field, tens of thousands of volts per meter. GPS signals are actually especially weak, as low as 0.3 uV/m. permalink fedilink source parent [+] socsa@lemmy.ml 1 point 3 years ago* (last edited 3 years ago) [deleted] permalink fedilink source parent [–] Bwaz@kbin.social 4 points 3 years ago (1 child) Electricity isn't the same as electromagnetic radiation. A varying magnetic field induces a varying electric field which radiates into space as an EM wave. See Maxwell's equations. permalink fedilink source parent hideshow 1 child comment replies: [–] ChapolinColoradoNZ@lemmy.world 0 points 3 years ago Please describe "as if I'm 5yo" how a radio broadcasting antenna works? Thanks! =) permalink fedilink source parent [–] lowleveldata@programming.dev 3 points 3 years ago (4 children) they require a conductor Well I mean, he's holding it in his hand... permalink fedilink source parent hideshow 4 child comments replies: [–] Cannizzaro@feddit.ch 2 points 3 years ago (3 children) They mean a conducting medium like an electrolyte permalink fedilink source parent hideshow 3 child comments replies: [–] swab148@lemm.ee 2 points 3 years ago (2 children) Like Gatorade? permalink fedilink source parent hideshow 2 child comments replies: [–] blanketswithsmallpox@kbin.social 3 points 3 years ago It's got what rotating magnets crave. permalink fedilink source parent [–] Scruffy_Nerfherder@exploding-heads.com 3 points 3 years ago More like Brawndo. It's got what you crave. permalink fedilink source parent [–] douglasg14b@beehaw.org 1 point 3 years ago* That's not how that works... The magnets aren't being moved across conductors to induce currents. permalink fedilink source parent
[–] CookieJarObserver@sh.itjust.works 10 points 3 years ago (1 child) ⠀⠀⠀⠀⠀⠀⠀⢀⡔⠋⢉⠩⡉⠛⠛⠛⠉⣉⣉⠒⠒⡦⣄⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⢀⠎⠀⠀⠠⢃⣉⣀⡀⠂⠀⠀⠄⠀⠀⠀⠀⢱⠀⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⡰⠟⣀⢀⣒⠐⠛⡛⠳⢭⠆⠀⠤⡶⠿⠛⠂⠀⢈⠳⡀⠀⠀⠀⠀ ⠀⠀⠀⠀⢸⢈⢘⢠⡶⢬⣉⠉⠀⠀⡤⠄⠀⠀⠣⣄⠐⠚⣍⠁⢘⡇⠀⠀⠀⠀ ⠀⠀⠀⠀⠈⢫⡊⠀⠹⡦⢼⣍⠓⢲⠥⢍⣁⣒⣊⣀⡬⢴⢿⠈⡜⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠹⡄⠀⠘⢾⡉⠙⡿⠶⢤⣷⣤⣧⣤⣷⣾⣿⠀⡇⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠘⠦⡠⢀⠍⡒⠧⢄⣀⣁⣀⣏⣽⣹⠽⠊⠀⡇⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠑⠪⢔⡁⠦⠀⢀⡤⠤⠤⠄⠀⠠⠀⡇⠀⠀⠀⠀⠀ ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠑⠲⠤⠤⣀⣀⣀⣀⣀⠔⠁ permalink fedilink source parent hideshow 1 child comment replies: [–] DavidGarcia@feddit.nl 15 points 3 years ago my dude single handedly collapsing all the superpositions of all the cookie jars permalink fedilink source parent
[–] DavidGarcia@feddit.nl 15 points 3 years ago my dude single handedly collapsing all the superpositions of all the cookie jars permalink fedilink source parent
[–] lowleveldata@programming.dev -1 points 3 years ago (13 children) Does it tho? It's basically an electric generator permalink fedilink source parent hideshow 13 child comments replies: [–] ChapolinColoradoNZ@lemmy.world 16 points 3 years ago (11 children) It wouldn't produce anything. For magnets to induce electricity they require a conductor and air isn't one, at least not a good enough one. Without electrical current, there's no voltage, nor constant or oscillating kind of current and therefore no radio frequencies. An electronic crystal and a handful of components could. permalink fedilink source parent hideshow 11 child comments replies: [–] nothacking@discuss.tchncs.de 7 points 3 years ago* (last edited 3 years ago) (3 children) No. Electromagnetic radiation. It doesn't need a conductor. Think of it as a loop antenna except instead of a coil of wire generating the field a permanent magnet does. An electric field is produced by any moving magnet, all a nearby conductor does is provides easily movable electrons that can flow in response to it. permalink fedilink source parent hideshow 3 child comments replies: [–] ChapolinColoradoNZ@lemmy.world 1 point 3 years ago (1 child) So are you saying that a fidget spinner equipped with a couple of magnets and spun fast enough to generate that radio frequency can interfere with a purpose built radio broadcasting antenna set for the same (or resonant) frequency? In other terms, it will be able to radiate enough mV over the air to disrupt it? permalink fedilink source parent hideshow 1 child comment replies: [–] nothacking@discuss.tchncs.de 5 points 3 years ago The fast enough part is key. To generate a signal on the AM broadcast band you would have to rotate it at 800 thousands rotations per second. As for being able to interfere, radio signals are often in the microvolt/m range by the time they reach the reciver, and a strong magnet can produce a few volts in a small (10-20 turns) coil just being moved by hand. If you somehow managed to get a magnet spining at the 1575 million rotations per second as in the meme (without it disintegrating on contact with air, or getting ripped apart, or turning the air to plasma), it would produce massive amounts of field, tens of thousands of volts per meter. GPS signals are actually especially weak, as low as 0.3 uV/m. permalink fedilink source parent [+] socsa@lemmy.ml 1 point 3 years ago* (last edited 3 years ago) [deleted] permalink fedilink source parent [–] Bwaz@kbin.social 4 points 3 years ago (1 child) Electricity isn't the same as electromagnetic radiation. A varying magnetic field induces a varying electric field which radiates into space as an EM wave. See Maxwell's equations. permalink fedilink source parent hideshow 1 child comment replies: [–] ChapolinColoradoNZ@lemmy.world 0 points 3 years ago Please describe "as if I'm 5yo" how a radio broadcasting antenna works? Thanks! =) permalink fedilink source parent [–] lowleveldata@programming.dev 3 points 3 years ago (4 children) they require a conductor Well I mean, he's holding it in his hand... permalink fedilink source parent hideshow 4 child comments replies: [–] Cannizzaro@feddit.ch 2 points 3 years ago (3 children) They mean a conducting medium like an electrolyte permalink fedilink source parent hideshow 3 child comments replies: [–] swab148@lemm.ee 2 points 3 years ago (2 children) Like Gatorade? permalink fedilink source parent hideshow 2 child comments replies: [–] blanketswithsmallpox@kbin.social 3 points 3 years ago It's got what rotating magnets crave. permalink fedilink source parent [–] Scruffy_Nerfherder@exploding-heads.com 3 points 3 years ago More like Brawndo. It's got what you crave. permalink fedilink source parent [–] douglasg14b@beehaw.org 1 point 3 years ago* That's not how that works... The magnets aren't being moved across conductors to induce currents. permalink fedilink source parent
[–] ChapolinColoradoNZ@lemmy.world 16 points 3 years ago (11 children) It wouldn't produce anything. For magnets to induce electricity they require a conductor and air isn't one, at least not a good enough one. Without electrical current, there's no voltage, nor constant or oscillating kind of current and therefore no radio frequencies. An electronic crystal and a handful of components could. permalink fedilink source parent hideshow 11 child comments replies: [–] nothacking@discuss.tchncs.de 7 points 3 years ago* (last edited 3 years ago) (3 children) No. Electromagnetic radiation. It doesn't need a conductor. Think of it as a loop antenna except instead of a coil of wire generating the field a permanent magnet does. An electric field is produced by any moving magnet, all a nearby conductor does is provides easily movable electrons that can flow in response to it. permalink fedilink source parent hideshow 3 child comments replies: [–] ChapolinColoradoNZ@lemmy.world 1 point 3 years ago (1 child) So are you saying that a fidget spinner equipped with a couple of magnets and spun fast enough to generate that radio frequency can interfere with a purpose built radio broadcasting antenna set for the same (or resonant) frequency? In other terms, it will be able to radiate enough mV over the air to disrupt it? permalink fedilink source parent hideshow 1 child comment replies: [–] nothacking@discuss.tchncs.de 5 points 3 years ago The fast enough part is key. To generate a signal on the AM broadcast band you would have to rotate it at 800 thousands rotations per second. As for being able to interfere, radio signals are often in the microvolt/m range by the time they reach the reciver, and a strong magnet can produce a few volts in a small (10-20 turns) coil just being moved by hand. If you somehow managed to get a magnet spining at the 1575 million rotations per second as in the meme (without it disintegrating on contact with air, or getting ripped apart, or turning the air to plasma), it would produce massive amounts of field, tens of thousands of volts per meter. GPS signals are actually especially weak, as low as 0.3 uV/m. permalink fedilink source parent [+] socsa@lemmy.ml 1 point 3 years ago* (last edited 3 years ago) [deleted] permalink fedilink source parent [–] Bwaz@kbin.social 4 points 3 years ago (1 child) Electricity isn't the same as electromagnetic radiation. A varying magnetic field induces a varying electric field which radiates into space as an EM wave. See Maxwell's equations. permalink fedilink source parent hideshow 1 child comment replies: [–] ChapolinColoradoNZ@lemmy.world 0 points 3 years ago Please describe "as if I'm 5yo" how a radio broadcasting antenna works? Thanks! =) permalink fedilink source parent [–] lowleveldata@programming.dev 3 points 3 years ago (4 children) they require a conductor Well I mean, he's holding it in his hand... permalink fedilink source parent hideshow 4 child comments replies: [–] Cannizzaro@feddit.ch 2 points 3 years ago (3 children) They mean a conducting medium like an electrolyte permalink fedilink source parent hideshow 3 child comments replies: [–] swab148@lemm.ee 2 points 3 years ago (2 children) Like Gatorade? permalink fedilink source parent hideshow 2 child comments replies: [–] blanketswithsmallpox@kbin.social 3 points 3 years ago It's got what rotating magnets crave. permalink fedilink source parent [–] Scruffy_Nerfherder@exploding-heads.com 3 points 3 years ago More like Brawndo. It's got what you crave. permalink fedilink source parent
[–] nothacking@discuss.tchncs.de 7 points 3 years ago* (last edited 3 years ago) (3 children) No. Electromagnetic radiation. It doesn't need a conductor. Think of it as a loop antenna except instead of a coil of wire generating the field a permanent magnet does. An electric field is produced by any moving magnet, all a nearby conductor does is provides easily movable electrons that can flow in response to it. permalink fedilink source parent hideshow 3 child comments replies: [–] ChapolinColoradoNZ@lemmy.world 1 point 3 years ago (1 child) So are you saying that a fidget spinner equipped with a couple of magnets and spun fast enough to generate that radio frequency can interfere with a purpose built radio broadcasting antenna set for the same (or resonant) frequency? In other terms, it will be able to radiate enough mV over the air to disrupt it? permalink fedilink source parent hideshow 1 child comment replies: [–] nothacking@discuss.tchncs.de 5 points 3 years ago The fast enough part is key. To generate a signal on the AM broadcast band you would have to rotate it at 800 thousands rotations per second. As for being able to interfere, radio signals are often in the microvolt/m range by the time they reach the reciver, and a strong magnet can produce a few volts in a small (10-20 turns) coil just being moved by hand. If you somehow managed to get a magnet spining at the 1575 million rotations per second as in the meme (without it disintegrating on contact with air, or getting ripped apart, or turning the air to plasma), it would produce massive amounts of field, tens of thousands of volts per meter. GPS signals are actually especially weak, as low as 0.3 uV/m. permalink fedilink source parent [+] socsa@lemmy.ml 1 point 3 years ago* (last edited 3 years ago) [deleted] permalink fedilink source parent
[–] ChapolinColoradoNZ@lemmy.world 1 point 3 years ago (1 child) So are you saying that a fidget spinner equipped with a couple of magnets and spun fast enough to generate that radio frequency can interfere with a purpose built radio broadcasting antenna set for the same (or resonant) frequency? In other terms, it will be able to radiate enough mV over the air to disrupt it? permalink fedilink source parent hideshow 1 child comment replies: [–] nothacking@discuss.tchncs.de 5 points 3 years ago The fast enough part is key. To generate a signal on the AM broadcast band you would have to rotate it at 800 thousands rotations per second. As for being able to interfere, radio signals are often in the microvolt/m range by the time they reach the reciver, and a strong magnet can produce a few volts in a small (10-20 turns) coil just being moved by hand. If you somehow managed to get a magnet spining at the 1575 million rotations per second as in the meme (without it disintegrating on contact with air, or getting ripped apart, or turning the air to plasma), it would produce massive amounts of field, tens of thousands of volts per meter. GPS signals are actually especially weak, as low as 0.3 uV/m. permalink fedilink source parent
[–] nothacking@discuss.tchncs.de 5 points 3 years ago The fast enough part is key. To generate a signal on the AM broadcast band you would have to rotate it at 800 thousands rotations per second. As for being able to interfere, radio signals are often in the microvolt/m range by the time they reach the reciver, and a strong magnet can produce a few volts in a small (10-20 turns) coil just being moved by hand. If you somehow managed to get a magnet spining at the 1575 million rotations per second as in the meme (without it disintegrating on contact with air, or getting ripped apart, or turning the air to plasma), it would produce massive amounts of field, tens of thousands of volts per meter. GPS signals are actually especially weak, as low as 0.3 uV/m. permalink fedilink source parent
[+] socsa@lemmy.ml 1 point 3 years ago* (last edited 3 years ago) [deleted] permalink fedilink source parent
[–] Bwaz@kbin.social 4 points 3 years ago (1 child) Electricity isn't the same as electromagnetic radiation. A varying magnetic field induces a varying electric field which radiates into space as an EM wave. See Maxwell's equations. permalink fedilink source parent hideshow 1 child comment replies: [–] ChapolinColoradoNZ@lemmy.world 0 points 3 years ago Please describe "as if I'm 5yo" how a radio broadcasting antenna works? Thanks! =) permalink fedilink source parent
[–] ChapolinColoradoNZ@lemmy.world 0 points 3 years ago Please describe "as if I'm 5yo" how a radio broadcasting antenna works? Thanks! =) permalink fedilink source parent
[–] lowleveldata@programming.dev 3 points 3 years ago (4 children) they require a conductor Well I mean, he's holding it in his hand... permalink fedilink source parent hideshow 4 child comments replies: [–] Cannizzaro@feddit.ch 2 points 3 years ago (3 children) They mean a conducting medium like an electrolyte permalink fedilink source parent hideshow 3 child comments replies: [–] swab148@lemm.ee 2 points 3 years ago (2 children) Like Gatorade? permalink fedilink source parent hideshow 2 child comments replies: [–] blanketswithsmallpox@kbin.social 3 points 3 years ago It's got what rotating magnets crave. permalink fedilink source parent [–] Scruffy_Nerfherder@exploding-heads.com 3 points 3 years ago More like Brawndo. It's got what you crave. permalink fedilink source parent
[–] Cannizzaro@feddit.ch 2 points 3 years ago (3 children) They mean a conducting medium like an electrolyte permalink fedilink source parent hideshow 3 child comments replies: [–] swab148@lemm.ee 2 points 3 years ago (2 children) Like Gatorade? permalink fedilink source parent hideshow 2 child comments replies: [–] blanketswithsmallpox@kbin.social 3 points 3 years ago It's got what rotating magnets crave. permalink fedilink source parent [–] Scruffy_Nerfherder@exploding-heads.com 3 points 3 years ago More like Brawndo. It's got what you crave. permalink fedilink source parent
[–] swab148@lemm.ee 2 points 3 years ago (2 children) Like Gatorade? permalink fedilink source parent hideshow 2 child comments replies: [–] blanketswithsmallpox@kbin.social 3 points 3 years ago It's got what rotating magnets crave. permalink fedilink source parent [–] Scruffy_Nerfherder@exploding-heads.com 3 points 3 years ago More like Brawndo. It's got what you crave. permalink fedilink source parent
[–] blanketswithsmallpox@kbin.social 3 points 3 years ago It's got what rotating magnets crave. permalink fedilink source parent
[–] Scruffy_Nerfherder@exploding-heads.com 3 points 3 years ago More like Brawndo. It's got what you crave. permalink fedilink source parent
[–] douglasg14b@beehaw.org 1 point 3 years ago* That's not how that works... The magnets aren't being moved across conductors to induce currents. permalink fedilink source parent