4 ms·
Of course, I'm reminded of Brendan Gregg shouting at hard drives: https://www.youtube.com/watch?v=tDacjrSCeq4 https://www.youtube.com/watch?v=tDacjrSCeq4 Hard
by jmbwell 4y ago
Of course, I'm reminded of Brendan Gregg shouting at hard drives:
https://www.youtube.com/watch?v=tDacjrSCeq4 https://www.youtube.com/watch?v=tDacjrSCeq4
Hard disk drives are not dissimilar from other high-precision acoustic systems. The actuator is even called a "voice coil."
That we are able to transmit a range of frequencies with sufficient accuracy and precision to induce a magnet to move a near-microscopic coil of wire at the end of armature flying microns above the surface of a platter spinning at a rotational velocity of thousands of RPMs and a linear velocity of inches per millisecond, land at exact locations, and detect the polarity of a magnetic field… I can't even. I don't even know what to compare it to.
- OedipusRex 4y agoLast time someone posted this he showed up in the comments lol
- mmastrac 4y agohttps://news.ycombinator.com/item?id=32513240 https://news.ycombinator.com/item?id=32513240
- samstave 4y agoWe have a word for that. >MAGICK
- sbierwagen 4y agoA lot of signal processing/information theory stuff crosses over pretty seamlessly between hard drives and radio transmission, too: https://www.schrankmonster.de/wp-content/uploads/2019/12/Screenshot-at-2019-12-07-12-53-39.png https://www.schrankmonster.de/wp-content/uploads/2019/12/Scr... The presentation that (deleted) tweet screenshots: https://www.iaria.org/conferences2015/filesAICT15/AnIntroductionToHDDModellingDetectionAndDecoding.pdf https://www.iaria.org/conferences2015/filesAICT15/AnIntroduc...
- ideamotor 4y agoCompare it to … Havana syndrome?
- cm2187 4y agoor Apple: https://www.youtube.com/watch?v=C5d151lqJsA&t=150s https://www.youtube.com/watch?v=C5d151lqJsA&t=150s