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‎6:30 am in Colorado my brother reported a 63 level of rads......what is up with that?


Online Geiger Counter Nuclear Radiation Detector Map

Thank you Dutch Joens



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6:30 am in Colorado my brother reported a 63 level of rads......what is up with that?





After visiting this page, please consider visiting my home page, http://www.blackcatsystems.com My full time job is writing software, and I have a variety of programs available for the Macintosh, Windows, iPhone, iPad, and iPod Touch. Perhaps you will find something of interest.
Typical background radiation levels for most of the USA are in the 5 to 28 uR/hr range. Readings can be higher for brief periods of time due to normal variations in radiation levels. They can also be consistently higher for areas at high elevations such as Colorado, or with larger natural deposits of uranium, thorium, radon, etc.
The readings on this page were obtained using one of the Black Cat Systems radiation detectors:
The detector is connected to an ordinary computer (Windows or Macintosh) running a copy of the Rad software and connected to the internet (dialup, cable modem, dsl, etc). Rad automatically sends the current radiation reading to the web server that hosts this site, which generates the map showing the readings for all radiation monitoring stations. Rad is included free with any of our radiation detectors.
Users of our detectors are welcome to add their site to the map. Contact us at info (at) blackcatsystems (dot) com for details on how.
A geiger counter lets you check the environment and items for radioactivity. You can use to check for the presence of radon on your house or basement, or even use it to go prospecting for uranium or other radioactive minerals. The GM-10 and other members of the geiger counter family can detect radioisotopes such as Polonium 210 which was used to poison Alexander Litvinenko.
A geiger counter works by detecting the ionization produced by a radioactive particle. Each time a particle of radiation is detected, the counter records this event. The number of events recorded over a period of time indicates the amount of radiation present. Often this is done over one minute intervals, resulting in the familiar "counts per minute" or CPM. The higher the CPM, the higher the radiation levels. You can read a more in depth description of how geiger counters work.

Variations in Geiger Counter Readings

Radiation decay is a random event. That means that if the average reading is say 16 CPM, it will not remain a steady 16, but will bounce up and down. This is normal. The standard deviation is the square root of the average value, and the typical maximum range is plus or minus 3 standard deviations.So, using the above example, the square root of 16 is 4, so the standard deviation is 4. 3 times 4 is 12. So we would expect the readings to be 16 +/- 12, or range from 4 to 28. That is to say, even if the radiation levels are a "constant" 16, the apparent readings of the geiger counter will range between 4 and 28. So if you suddenly see the reading jump from 16 to 25, that does necessarily not mean that the radiation level has increased.


In fact, if you become an active participant in this network (instead of just a passive viewer of this website), the GeigerGraph software that youuse will incorporate the same Radiation Map as above, but your map will be fully interactive, with zoom capabilities, descriptions of Nuclear Sites and Monitoring Stations, additional Map Layers, including CountiesAirportsRoads, RailroadsLakes and Rivers, and even the capability to download City Streets for your county.  Plus, in keeping with the elements of a true Network, the GeigerGraph software has its ownChat forum.
Compatible Geiger Counter Models:
bulletThe Geiger
bulletMonitor 4 (yr 2008 redesign)
bulletRadalert 50 and Radalert 100
bulletDigilert 50 and Digilert 100
bulletpalmRAD
bulletInspector
bulletInspector EXP
Most of these models, as well as the GeigerGraph for Networks software, are available at GeigerCounters.com, a web site operated byMineralab.  Click on the text hyperlinks in the previous sentence to go there.  You can also contact us here:
Mineralab, LLC
2860 W. Live Oak Drive
Prescott, AZ 86305 USA

Please read this Message first if you are considering contacting us.

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