John J. Hopfield
John J. Hopfield1
1Naval Stores Research Division, Bureau of Agricultural Chemistry and Engineering, U. S. Department of Agriculture, Washington, D. C.
1Now with National Bureau of Standards of the Department of Commerce, Washington, D. C.
No abstract available.
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Construction and use of light-and-shadow box.
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Raman and iron comparison spectra viewed against the light (A) and shadow (B) portions of light-and-shadow box.