• Entropius@lemmy.world
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    1 year ago

    LiDAR is essentially radar that uses light instead of sound

    Radar doesn’t use sound. It sounds like the author doesn’t know the difference between sonar and radar.

    • PM_Your_Nudes_Please@lemmy.world
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      1 year ago

      Yeah, it uses radio frequencies. RaDAR stands for “Radio Detection And Ranging”. It uses radio waves (usually in the microwave bandwidth) to detect things. Basically, since those radio waves are affected by the Doppler effect, you can have a computer do some math to determine the speed of whatever those waves reflected off of. Because the Doppler effect changes a wave based on how fast an object is moving relative to an observer. So if you’re a stationary observer, you can figure out how fast an object is moving relative to yourself, purely based on how much that moving object changes the waves you’re reflecting off of it.

      • Slotos@feddit.nl
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        1 year ago

        Every wave is affected by Doppler effect.

        When a car rushes your way, it’s a tiny bit bluer, a little bit hotter, it’s drivers’ phone is operating on a slightly higher frequency and it sounds higher. According to you.

    • TheBiscuitLout@lemmy.world
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      1 year ago

      To be honest, I’m taking it as a sign of it developing genuine artificial intelligence. It examined its situation and surroundings, and made the only logical choice

    • malloc@lemmy.worldOP
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      1 year ago

      Just need to sneak in this code

      if (facialMatch(elon)) { haltAndCatchFire(); }

  • alienanimals@lemmy.world
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    1 year ago

    Literally every single day we have idiots doing Musk’s PR work for free.

    Downvote Musk spam. The billionaire doesn’t need your help ensuring his businesses stay in the 24 hour news cycle.

    • malloc@lemmy.worldOP
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      1 year ago

      Counter point: If I didn’t hear how badly he runs his businesses, or how bad his company’s products are. I would have easily bought one or more of his products.

      I have backed out of Tesla pre-orders because of the bad publicity, many reports of bad build quality, and terrible business decisions.

      If this was a puff piece, I honestly wouldn’t have bothered posting it.