Centrist, progressive, radical optimist. Geophysicist, R&D, Planetary Scientist and general nerd in Winnipeg, Canada.

troyunrau.ca (personal)

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Joined 1 year ago
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Cake day: June 12th, 2023

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  • In my particular case, the purpose was testing the equipment over a target that I can use to confirm it is working as expected.

    But GPR in concrete can be used for all the purposes you mention. It can also be used to find voids, verify “as-built” drawings, etc. Some of our clients use it simply to avoid drilling into rebar when installing anchor bolts for shelving or whatever.

    My background isn’t concrete, so I don’t do the more advanced things with it :)









  • Neufeld’s von Braun book is great! It doesn’t pull any ethical punches – it’s almost clinical in the treatment of his early career opportunism within the Nazi regime.

    The bottom shelves are dedicated more to rocket science than human spaceflight, generally, which is why I don’t have Hadfield’s book. I met him once though. I did grad school in Planetary Science and got to meet quite a few astronauts and have a few beers.

















  • That’s a good idea. Better than my other ideas. Cereal box full of cereal and the modem.

    For a moment I considered putting in a bucket with resin and letting it solidify, then removing the bucket and just shipping them a modem encased in resin. But they’d probably charge me for the modem they’re just going to send to the landfill anyway. Maybe I should do that and turn it into a modem bowl on the lathe…