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May 13, 2018 – As early as 1885, the Music Commission of the Italian Government declared that all instruments and orchestras should use a tuning fork that vibrated at 440 Hz, which was different from the original standard of 435 Hz and the competing 432 Hz used in France.

Source: when was tune 432 changed to 440 – Google Search

Scientific pitch, also known as philosophical pitch, Sauveur pitch or Verdi tuning, is an absolute … With a Verdi pitch standard of A4 = 432 Hz = 24 × 33, in just tuning all octaves (factor 2), perfect fourths (factor 4:3) and fifths (factor 3:2) will have

Source: verdi’s A – 432 Mhz – Google Search

Think your Mac or MacBook is too old to run the newest macOS? Think again! Here’s how to install macOS Catalina on older Macs using the macOS Catalina Patch Tool

Source: How To Install Catalina On Older Mac, Update macOS On An Old MacBook – Macworld UK

Source: install mojave on macbook pro mid 2012 15 – Google Search

Source: macos format hard disk extended jorunaled vs lower uper case – Google Search

Under construction

Source: Biography of Nikola Tesla (1856-1943) – Open Tesla Research

Source: TSCW Gala 2019: A Night for Tesla & Wardenclyffe – Tesla Science Center at Wardenclyffe

Source: Exploring What Lies Beneath Nikola Tesla’s Lab – Google Search

Richard Phillips Feynman, ForMemRS (/ˈfaɪnmən/; May 11, 1918 – February 15, 1988) was an American theoretical physicist, known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, and the physics of the superfluidity of supercooled liquid helium, as well as in …

Source: Richard Feynman – Google Search

Source: Richard Feynman – Google Search