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- Newsgroups: misc.consumers,sci.environment,sci.med
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- From: M20614@mwvm.mitre.org (Hugh Pritchard)
- Subject: Re: "Small amounts" of radioactivy (was: Light Bulbs)
- Message-ID: <16857BEF1.M20614@mwvm.mitre.org>
- Sender: news@linus.mitre.org (News Service)
- Nntp-Posting-Host: mwvm.mitre.org
- Organization: The MITRE Corporation, McLean VA 22102
- References: <1992Sep2.173533.11609@murdoch.acc.Virginia.EDU> <1992Sep3.142402.641@newshub.ccs.yorku.ca>
- Date: Thu, 3 Sep 1992 17:34:37 GMT
- Lines: 19
-
- In article <1992Sep3.142402.641@newshub.ccs.yorku.ca>
- tony@nexus.yorku.ca (Anthony Wallis) writes:
-
- >For a start, due to their varying penetrating powers, there's orders of
- >of magnitude difference between the effects of diffused exposure to
- >alpha, beta, and gamma radiations. I don't ever want to be anywhere
- >near a low intensity gamma source, but am not too concerned about a ...
-
- I was under the impression that "gamma rays" were merely photons --
- light rays. Are "gamma rays" in this context photons of a specific
- energy or range of energies? Perhaps they are more energetic [ =
- shorter wavelength] than X-rays.
-
- And aren't gamma rays of this energy emitted by radioisotopes (e.g.
- technetium) used in nuclear medicine? The gamma rays are detected
- by a scintillation counter ("gamma camera"). Lots of patients (me
- included) have had gamma scans with no apparent ill effects.
-
- ** Hugh Pritchard, hapritch@mitre.org, 703/883-6616
-