Scan or scam?Using laser technology that has an apparent resolution of only about half a centimeter centimeter (sĕn`tĭmē'tər), abbr. cm, unit of length equal to 0.01 meter, the basic unit of length in the metric system. The centimeter is the unit of length in the cgs system. It is approximately equal to 0. is somewhat laughable ("Laser scanners map rock art," SN: 4/3/04, p. 222). I also wondered whether the "fresh coat of desert varnish desert varnish or patina Thin, dark red to black mineral coating (generally iron and manganese oxides and silica) deposited on pebbles and rocks on the surface of desert regions. " was an April fool joke. Actually, I really look forward to every new issue. You do a great job. FRED DOMBROSE, CHARLOTTE, N.C. For images that weren't were·n't Contraction of were not. weren't were not three-dimensional three-di·men·sion·al adj. 1. Of, relating to, having, or existing in three dimensions. 2. Having or appearing to have extension in depth. 3. , the equipment produced detailed, 1-megapixel images, on par with many digital cameras. The "fresh" coat of desert varrush was several thousand years of minerals deposited by the desert itself.--S. PERKINS |
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