Frank Blake

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  • Frank Blake
  • Proceedings of the National Academy of Sciences…
  • 2005
In determining the value of 'h' by means of X-rays Blake and Duane1 (p. 636) found out by experiment that the 'depth of the effective plane' was 0.203 mm. for the case of calcite, using X-rays of a wave-length 0.454 A. An attempt is made in this note to explain this theoretically. Call,A the coefficient of true absorption and r the reflection coefficient.(More)
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