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Groups > sci.physics > #690607
| From | Volney <volney@volney.invalid> |
|---|---|
| Newsgroups | sci.physics |
| Subject | Re: Particle physics 2 |
| Date | 2018-06-14 13:08 -0400 |
| Organization | A noiseless patient Spider |
| Message-ID | <pfu7e3$ipe$1@dont-email.me> (permalink) |
| References | (1 earlier) <bd9b4fa0-c3a8-4247-906a-51d36cb77b0c@googlegroups.com> <d526f236-e3d2-4152-82b5-dd2c2cf00bab@googlegroups.com> <pfu5ti$81u$1@dont-email.me> <pfu6g4$fcv$1@gioia.aioe.org> <pfu76e$h0b$1@dont-email.me> |
On 6/14/2018 1:04 PM, Volney wrote: > On 6/14/2018 12:52 PM, Sergio wrote: >> On 6/14/2018 11:42 AM, Volney wrote: >>> Yes that is something that confounded early radiation experimenters. >>> They wanted a place with a low background level for more sensitive >>> experiments. They knew rocks contained radioactive elements, so they >>> figured things would work better if they did their work on mountaintops >>> or balloons. To their surprise, the radiation _increased_. And it was >>> coming from above, even to a large extent on the surface of the earth or >>> below ground. >> >> http://rocketsetc.com/wp-content/uploads/2015/05/hab2-geiger2.png >> >> https://meteolcd.files.wordpress.com/2015/10/dose_rate_versus_altitude.jpg >> >> >> http://www.ansto.gov.au/cs/groups/corporate/documents/stillimage/mdaw/mda5/~edisp/acs017612.jpg >> > > yeah I remember reading how airline pilots and flight attendants (and > the passengers, of course) receive the equivalent of n dental X-rays of > radiation on every cross-country flight. This is a bigger problem for > the airline employees than occasional passengers, of course. I forgot > what "n" is, or how long it takes sitting on your butt at sea level to > "get" a dental X-ray. Someone invented the "banana" scale for small amounts of radiation. One "banana" was the amount of radiation you get by eating an average banana, from the high levels of potassium (and thus K-40) they contain. You can rate such things as dental X-rays or spending a day in Quito Ecuador in "bananas" of radiation.
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Re: Particle physics 2 numbernumber1964@gmail.com - 2018-06-13 13:55 -0700
Re: Particle physics 2 Edward Prochak <edprochak@gmail.com> - 2018-06-14 08:06 -0700
Re: Particle physics 2 Volney <volney@volney.invalid> - 2018-06-14 12:42 -0400
Re: Particle physics 2 Sergio <invalid@invalid.com> - 2018-06-14 11:52 -0500
Re: Particle physics 2 Volney <volney@volney.invalid> - 2018-06-14 13:04 -0400
Re: Particle physics 2 Volney <volney@volney.invalid> - 2018-06-14 13:08 -0400
Re: Particle physics 2 Sergio <invalid@invalid.com> - 2018-06-14 12:40 -0500
Re: Particle physics 2 benj <benj@nobody.net> - 2018-06-14 16:01 -0400
Re: Particle physics 2 Edward Prochak <edprochak@gmail.com> - 2018-06-15 05:39 -0700
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