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    Radioactive dating is called

    Net on Radioactive Lenses (gamma levels..) Radioactive Fed-5s (slight..) Radioactive Optics Posting (WJM) Radioactive Pentax Lens (GM tube sound file..) Romancing the Rare Earths On Enhancing Filters by Howard Ross U. Govt Surplus "Hot" Cameras and Lenses You will find two kinds of radioactive lenses - those that were contaminated and sold as government surplus, and those that are naturally "hot" or radioactive due to the radioactive elements or radioactive impurities used in their manufacture. I am assuming that heavily contaminated and radioactive government surplus items end up in government low level radioactive waste land-fills or other burial sites.

    If you want to buy some slightly radioactive lenses and cameras, the U. So if your government surplus bargain camera or lens is contaminated, it is probably only "lightly" contaminated. "Hot" Lenses made from Radioactive Materials Many specialty optical glasses have radioactive elements added to them, either as desired components or as impurities in the mixtures being used.

    The release of radiation by unstable nuclei is called radioactive decay.

    Chronological sequence is all that is really required.

    It takes another 5,730 for half of the remainder to decay, and then another 5,730 for half of what's left then to decay and so on.

    The period of time that it takes for half of a sample to decay is called a "half-life." Radiocarbon oxidizes (that is, it combines with oxygen) and enters the biosphere through natural processes like breathing and eating.

    Sometimes I have kept copies in different formats of information on those sites.

    Rather than let such information disappear into the ether, occassionally I have reproduced some or all of it here. If I have reproduced this inappropriately and you are its original author, please contact me and I will remove it.

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