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Jon Dudley
@ionmeister.bsky.social
UK based radiation protection adviser with a penchant for electromagnetic fields. Also into science, politics, music and all things interesting.
30 followers41 following17 posts
JDionmeister.bsky.social

First advert for a radio transmitter / receiver system. 1905, cost $8.50 Love the component names like coherer and decoherer, also the send and catch wires.

First advert for a wireless transmit / receive system
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JDionmeister.bsky.social

I think the mine itself is fenced but the old access road isn't. Open track running past a house from a country lane. It's about 5 micro Sv inside a car parked on the country lane. The mine was closed in 1930 but the detritus left from transporting the uranium ore was never cleaned up.

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JDionmeister.bsky.social

Well, given the choice I wouldn't pitch my tent there! It's about the same dose as a chest X ray every 2 hours.

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JDionmeister.bsky.social
JDionmeister.bsky.social

This week work takes me down to Cornwall to visit a radar and deliver some training. Gives me opportunity for a quick visit to South Terras mine, the UK's only #uranium mine and source of much of the #radium used by Marie Curie. Got this measurement last time I was there.

Radiation dose rate of 13 micro sieverts per hour at South Terras uranium mine.
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JDionmeister.bsky.social

Just made the mistake of trying to watch Tenet while half asleep. Insanely complex...going to have to watch it again!

Movie poster for Tenet.
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Profile banner
JD
Jon Dudley
@ionmeister.bsky.social
UK based radiation protection adviser with a penchant for electromagnetic fields. Also into science, politics, music and all things interesting.
30 followers41 following17 posts