Contents 1 Use of the term 2 Lethal dose 3 eh?? 4 biological effects 5 Unit Conversion

[edit] Use of the term

Article states that the U.S. is "the only country to still use the rad." In the U.S. medical community the rad is officially considered obsolete, in favor of the Gray (unit) or centigray, although some older physicians use the term out of habit. In Hall's textbook Radiobiology for the Radiologist, Grays and centigrays are primarily used.

Rad is still used by and large in the space industry. In part the industry can be very slow to accept change and part because of the legacy tools and data that are already available. In this case it is not so clear whetehr the benefits of standardising outwiegh the cost and risks of converting all available data and systems currently in place.

I have removed for now any mention that the US is the only country to still use the rad since there is no cited evidence given. Js229 09:11, 9 August 2007 (UTC)

[edit] Lethal dose

What is the lethal exposure level in rads for humans? — Loadmaster 21:36, 8 August 2007 (UTC)

[edit] eh??

Yes, another wikipedia entry that literally say nothing.

[edit] biological effects

Added a link to Radiation Poisoning. Rads (and rems) are still there in legacy literature.

[edit] Unit Conversion

How does one convert between the different measurements? How much is rad compared to gray, rem, and Sv? - Commandur (talk) 16:30, 16 October 2009 (UTC)

it's in the article. "100 rad are equal to 1 gray". use wolfram alpha for easy conversions if that's what you want. --Ysangkok (talk) 19:38, 19 October 2009 (UTC)

I guess I just didn't notice that rem and Sv were modified units to show the effects on tissue. Basically, they have an "extra" variable. I dropped in to the sievert discussion page for help on this "quality factor". - Commandur (talk) 05:44, 8 December 2009 (UTC)