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Blog

Filtering by Tag: smartphone

Go for Zero this March

Alan Duffy

The precious metals used in our smartphones were forged in dying stars and mined from the Earth at enormous cost, so we aren’t getting any more of them! Yet there are over 4 million unused or broken mobile phones gathering dust in our homes and businesses representing a huge stockpile of valuable materials and metals that can be reclaimed through recycling with MobileMuster in their Go For Zero campaign this year.

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"Determination of Zenith Angle Dependence of Incoherent Cosmic Ray Muon Flux Using Smartphones of the CREDO Project" - Karbowiak et al (2021)

Alan Duffy

The latest CREDO paper is out, demonstrating that the signals we detect using your smartphone really are from cosmic rays. The way we can tell is that there is are many more cosmic rays hitting you (and your phone’s CCD!) from directly above relative to the horizon. This is a cosine squared dependency, and with some very clever modelling the team showed we could recover such a profile (as well as measuring the thickness of the CCD in the phones used in the study too which is neat!)

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