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 )

A translated version of de Broglie's original 1927 Phd. thesis in pdf format by A.F. Kracklauer, 2004 is    available here.

§ Listen to short excerpt "What is matter?", by Erwin Schrodinger, 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 Calculator Mac application for de Broglie's quantum equations.

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