We all fear radiation yet life depends on it. We each are radioactive, living on a radioactive planet, in a radioactive solar system, in a radioactive universe, in a radioactive galaxy - Robert Peter Gale, MD and Eric Lax
where one becquerel is no other than one disintegration per second. regarding half-life, it is the time required for a radionuclide activity to reduce by decaying to half of its value at the initial stage. this would mean it would take at least one-half of the atoms to disperse time as...
Half Life manganese-54312.03 days or 26.9E6 sec cesium-13730.17 years silicon-32170 years or 5.4E9 sec radium-2261601 years manganese-54 looks like the shortest half life that was mentioned and it's available from United Nuclear: http://unitednuclear.com/index.php?main_page=product_info&cPath...
Several risk tools are utilized to better inform the medical management of spaceflight health risk. For instance, the Framingham risk score and Astronaut Cardiovascular Health and Risk Modification (Astro-CHARM) calculator are used to evaluate cardiovascular risk for crew members15,21,24. Such calcula...
Although today blackbody radiation calculations can be readily accomplished using anything from a programmable pocket calculator upwards, with each device making use of a wide variety of numerical approximations to the integral of Planck's function, radiation slide rules were in the early decades of ...
“suitcase bomb”. One of these portable nuclear bombs had an explosive charge of one kiloton, equivalent to one thousand tons of TNT. If a device like this made its way to the U.S. it could destroy everything within a half-mile radius of the Capitol in Washington, D.C. Within ...
How to use flight radiation calculator? To calculate what's the dose absorbed during your flight: Enter the number of hours of your flight. You need to remember that it's only the average value, and some aircraft routes pose a higher risk, e.g., flying polar routes near the geomagnetic...
In one study, the commercial ImPACT CT patient dosimetry calculator program (version 1.0, ImPACT 2009) was used to calculate the CTDIvol, the DLP and the effective dose using the tissue weighting factors, according to the ICRP 103 publication for the cardiac CT model in adult patients with a...
Rad Pro Convert for 2003 Smartphone: Units conversion only. System requirements: Windows Mobile 5.0 or Windows Mobile 6.0 operating system - Compact .NET Framework version 2.0 250K of free RAM Rad Pro Calculator for 2003 Pocket PC: Includes units conversions, decay and half-life calculations, ALA...
On-line ORNL calculator. The activities of chain members are solved by a hybrid forward-euler differential equation algorithm published by Leggett et. al. This numerical integration method was used in conjunction with the ICRP 107 decay database, where the progeny, branching ratios, and half-live...