2021-06-13

@Cointelegraph This is inaccurate. Tesla only sold ~10% of holdings to confirm BTC could be liquidated easily without moving market. When there’s confirmation of reasonable (~50%) clean energy usage by miners with positive future trend, Tesla will resume allowing Bitcoin transactions.

@ajtourville The Plaid carbon-wrapped motor is arguably the most advanced motor on Earth outside of maybe a lab somewhere. We have to keep some secrets! We have a few ideas for increasing torque & max rpm even further for new Roadster. Definitely fun & exciting engineering ahead!

@ajtourville Main advantage of this is a much stronger EM field compared with a rotor that is held together by metal (usually high strength steel). Other advantage is that rotor can go to higher RPM, as carbon sleeve (mostly) stops copper rotor from expanding due to radial acceleration.

@ajtourville Fiber is wound over rotor at high tension load. Machine to do this was made by Tesla Automation. Carbon sleeve must put copper rotor in compression or it loosens at low temp due to differential thermal expansion. Preload is also helpful for maintaining precise gap to stator.

@AlternateJones True

@PPathole Deriving moments of inertia from first principles

Esoteric meme of the day https://t.co/ELGmeLEXRE

@BrianNorgard Physics should be taught with the majesty & beauty it deserves

@BrianNorgard Physics is simply the search for truth. Nothing is more rigorous.