The World of Atom (Part X)

ReferenceA Logical Approach to Theoretical Physics

THE WORLD OF ATOM by Boorse

PART X – X-RAYS AND THEIR CONTRIBUTION TO THE RIDDLE OF MATTER

Chapter 51: Interference Phenomena – Max von Laue (1879 – 1960) Walter Friedrich (1883 – 1968) Paul Knipping (1883 – 1935)
Interference phenomena for X-Rays. Ingenious idea of using the atoms forming the lattice structure of a crystal as a diffraction grating for X-rays of extremely short wavelength. From X-ray diffraction pattern, one can not only calculate the wavelength of the X-rays but also find out a great deal about the structure of the crystal.

Chapter 52: Bragg’s Law – William Henry Bragg (1862 – 1942) William Lawrence Bragg (1890 – 1971) 
The Reflection of X-Rays by Crystals. This research showed (1) that the X-ray emission spectrum of an element is characteristic of that element, and (2) that X-rays can be used as a powerful and precise means of crystal analysis.

Chapter 53: Atomic Number – Antonius van der Broek (1870 – 1926) 
The Number of Possible Elements and Mendeleev’s “Cubic” Periodic System. The number of the place each element occupies in the periodic table is proportional to the square root of the number of scattered -particles.

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POSTULATE:
The short wavelength of X-rays provides greater insight into the structure of atoms.

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