On 23/02/2021 17:49, Jethro_uk wrote:
On Tue, 23 Feb 2021 16:24:52 +0000, Spike wrote:

On 23/02/2021 15:13, T i m wrote:

[quoted text muted]

I hope you don't sleep in the same bed as another adult, because you
will receive, and also give to them, a radiation dose from the ~5000 Bq
arising from the natural decay of Potassium 40 (K40) that is present in
your/their body. A gamma ray is emitted in about one out of every 10
disintegrations of K40, implying that about 500 gamma rays are produced
each second. These will be moving in all directions, and some will be
attenuated in the body.
Gamma rays are really dangerous.

Bananas are radioactive, as are Brazil nuts.

ISTR a pocketful of Brazils will trip a nuclear power stations door
sensors.

I read some of the documentation for a site a few years ago. The
permissible discharge to water was the equivalent of 9 bananas a year!