Hiroshima scientists turn any smartphone into a radiation detector

Comments

• deranger@sh.itjust.works ⁨17⁩ ⁨hours⁩ ago

  This costs “less than $70”.

  You can get a cheap Geiger counter for $50 today and it’s about the same size. I see some for $30-40. These are based on old, proven technology, not some new thing with new problems and an app.

  Not that it isn’t neat, but it’s kind of a solved problem.

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  • FartMaster69@lemmy.dbzer0.com ⁨17⁩ ⁨hours⁩ ago

    Well, technically the hair loss is permanent if you die afterwards.

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  • CannonFodder@lemmy.world ⁨13⁩ ⁨hours⁩ ago

    Yes, but a cheap Geiger counter doesn’t use AI. Get with the times.

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  • dukemirage@lemmy.world ⁨17⁩ ⁨hours⁩ ago

    What’s LD50 and LD99?

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    • deranger@sh.itjust.works ⁨16⁩ ⁨hours⁩ ago

      Other comment is wrong. LD50 = 50% chance of dying. LD99 = 99% chance of dying. The figures I listed are for humans, not mice. LD50 in mice is likely drastically different than LD50 in humans.

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    • MadPsyentist@lemmy.nz ⁨17⁩ ⁨hours⁩ ago

      We test on animals. Mice specifically, so we take the amount that killed the mouse and multiply by 50 to get an estimate on the Lethal Dose for humans. So i guess depending on the human the true lethal dose is going to be some where between 50 times the Lethal Dose and 99 times the Lethal Dose.

      So “LD” is the amount it took to kill a mouse and 50 times that or “LD50” is the estimated lethal dose for a human

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• 01189998819991197253@infosec.pub ⁨17⁩ ⁨hours⁩ ago

  The EBT4 film is designed to change color instantly when exposed to radiation, a change that can be detected by the naked eye.

  So, why do I need your system to point a digital camera on the film, if I can see the change on the film? Seems like a solution to a problem that was already solved.

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  • JustinTheGM@ttrpg.network ⁨17⁩ ⁨hours⁩ ago

    It’s not an “if” detector, it’s a “how much” detector. It looks like it’s using the LED chamber to light the film in a consistent way, and then the phone camera measures the color change to quantify how much radiation it was exposed to.

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    • 01189998819991197253@infosec.pub ⁨17⁩ ⁨hours⁩ ago

      Ah. I missed that. Ok, this makes total sense then. But the films activate at high doses anyway; doses you’ll notice. I guess this system will be especially useful if those films ever become more sensitive.

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  • squaresinger@lemmy.world ⁨17⁩ ⁨hours⁩ ago

    I guess if you want an automatic alarm, that could be useful.

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• SatansMaggotyCumFart@piefed.world ⁨18⁩ ⁨hours⁩ ago

  They already are one though.

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