Carbon foams exhibiting a dielectric constant of from about 2 to about 6 and simultaneously an electrical resistivity in the range of between about 1.E.sup.+00 ohm-cm and about 1.E.sup.+06 ohm-cm, demonstrate excellent radar emission absorptivity in the megahertz and gigahertz ranges.

 
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> Mass spectrometer method and apparatus for analyzing a sample in a solution

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