Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Chart showing radiation doses, in perspective (from XKCD)
XKCD ^ | 3/18/2011 | XKCD

Posted on 03/20/2011 3:37:01 PM PDT by DBrow

click here to read article


Navigation: use the links below to view more comments.
first previous 1-2021-27 last
To: DBrow

Thank you for the excellent post.

I will show this to my physics classes tomorrow.


21 posted on 03/20/2011 4:46:18 PM PDT by Mrs.Z
[ Post Reply | Private Reply | To 1 | View Replies]

To: Mrs.Z

You are welcome. He’s done other charts on the sizes of planets and their gravity wells, the size of the internet, and a bunch of other wonderful nerdy stuff.


22 posted on 03/20/2011 4:47:53 PM PDT by DBrow
[ Post Reply | Private Reply | To 21 | View Replies]

To: Cyber Liberty

THERE IS RADIATION DANGER!

Look at the chart: Sleeping next to someone is less than living within 50 miles of a Nuke. But sleeping next to 2 people IS MORE! Be safe, do not do that often or you risk receiving 0.10 µSv.


23 posted on 03/20/2011 5:09:54 PM PDT by LCH77
[ Post Reply | Private Reply | To 2 | View Replies]

To: DBrow; abb; weegee

"THIS IS LESTER HOLT REPORTING, AND WHILE I'M TOO EMOTIONALLY DISTRAUGHT TO REPORT ANYTHING WITHOUT GESTICULATING WILDLY, I MUST SAY THAT NONE OF THIS MAKES ANY SENSE TO ME."

24 posted on 03/20/2011 5:34:59 PM PDT by martin_fierro (< |:)~)
[ Post Reply | Private Reply | To 1 | View Replies]

To: LCH77

Bookmark


25 posted on 03/20/2011 5:36:53 PM PDT by Publius6961 (There has Never been a "Tax On The Rich" that has not reached the middle class)
[ Post Reply | Private Reply | To 23 | View Replies]

To: Gideon7
No context at all to those radiation reports.

The newest radiation detectors are so sensitive that a microSievert can be detected. In my college days we discarded measurements that small as background noise.

I think that we get more than a microsievert every time the Earth is rotated under a supernova or other gamma ray emitter.

26 posted on 03/20/2011 7:29:41 PM PDT by texas booster (Join FreeRepublic's Folding@Home team (Team # 36120) Cure Alzheimer's!)
[ Post Reply | Private Reply | To 16 | View Replies]

To: texas booster

“The newest radiation detectors are so sensitive that a microSievert can be detected. “

I use a NaI scintillator and a germanium crystal scintillator. They can detect, and measure, a single photon.

The NaI is not as good as the Ge detector, but either can measure the energy of that single photon, so I can discriminate between the potassium-40 in a banana and, say, radioiodine from a medical patient.

When I run the Ge system on a soil sample, K and thallium show up as huge peaks, but nobody in the news is trying to frighten us with the amount of radiation in a pound of soil.


27 posted on 03/20/2011 7:56:30 PM PDT by DBrow
[ Post Reply | Private Reply | To 26 | View Replies]


Navigation: use the links below to view more comments.
first previous 1-2021-27 last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson