dhagberg · HackerTrans

ano passadodiscuss

Wow, getting a drone to survive the massive electromagnetic fields (and plasma!) around lightning strikes is quite an accomplishment. Prior art in the area used rockets trailing a similar light wire to trigger lightning - used by Dr Uman's team at University of Florida (https://ufdc.ufl.edu/UFE0047331/00001).

dhagberg

ano passadodiscuss

First learned about this from a Carl Hiaasen book, Razor Girl (https://en.wikipedia.org/wiki/Razor_Girl)

dhagberg

há 2 anosdiscuss

Historically, Maine had excellent recreation policies in cooperation with the private paper companies that owned the majority of land in the northern part of the state: areas not actively being logged were available for recreation access, as were vehicles on logging roads (though you best yield to the logging trucks that drive down the middle of the roads, even if it means you need to dive into the ditch). State recreation fees for snowmobiles, fishing, etc. would cover things like insuring the private landowners against liability.

However, starting in the mid/late 90's, much of the paper company land was divested and sold to private equity land holders (yay modern finance!) and those previous open access policies have been very much curtailed. It's a big loss to the community, but it sure must be making some money for shareholders somewhere...

dhagberg

há 2 anosdiscuss

They're definitely used in ACARS messages that go to every commercial airplane cockpit...

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