“For as long as one has no further point of reference, apart from the position of the maximum, the wavelength thus remains uncertain by an integral factor.” LongPositionRemainsFactorsUncertainMaximumWavelength Author:Max von Laue
“For in 1900 all electromagnetic radiation of longer wavelengths was already known at least to the extent that one could not seek in it the more striking characteristics of X-rays such as, for example, the strong penetrating power.” StrongKnownExampleCharacteristicsRaysRadiationWavelength Author:Max von Laue
