de Broglie's Quantum Equations

"When you can measure what you are speaking about and express it in numbers, you know something about it" - Lord Kelvin ( 1824 - 1907 )

§ Listen to short excerpt "What is matter?", by Erwin Schrödinger, 1952   :

"We no longer contrast matter with forces and field of force as different entities, we know now that these concepts have to be merged. It is true, we call a spatial region free of matter, call it empty if there is nothing but a gravitational field. But space is never really empty because even far away in the universe there is starlight, and that is matter [ ... ]"

source: Erwin Schrödinger, 1952 Audio - document from the lecture "Was ist Materie?" English translation: taken from the lecture "Our Conception of Matter" given in 1952 organized by Rencontres Internationales de Genève, Geneva, Switzerland

§ de Broglie's Quantum Equation:

Examples of Determining de Broglie's Wavelength^∗

Problem 1: Find the de Broglie wavelength of a wave - particle whose total energy,

is .

Solution:

Problem 2: Find the de Broglie wavelength of earth whose rest or proper mass is .

Solution:

^∗

note: some of these examples are used in the future upcoming Relativity Physics and Science Calculator Mac application for de Broglie's quantum equations.

§ References:

1. "Recherches Sur la Théorie des Quanta" ( Research on the Theory of the Quanta ), par M. Louis de Broglie, Annales de Physique, 10^e Série, Tomé III, Janvier - Février, 1925, pgs 21 - 128, the original French version of de Broglie's original 1925 Phd. thesis


2. An English translated version of de Broglie's original 1925 Phd. thesis, by A.F. Kracklauer, 2004


3. "What is matter? ", by Erwin Schrödinger, 1952, Scientific American 189, 52 - 57 (1953) doi:10.1038/scientificamerican0953-52

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