The above excerpt might be taken from specifications for an Army tank in the year 2064 since high‐speed computers may then be capable of calculating all pertinent observables (strength, hardness, thermal conductivity, etc.) from the wave functions. However, projected military requirements a hundred years hence had little to do with the Army's sponsorship of the Sagamore conference on charge and spin density (Aug. 17–21, 1964), which resulted rather from an active interest of the research group of the US Army Materials Research Agency at Watertown, Mass., in the measurement and calculation of charge and spin density.

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