Ferrofluid was patented by NASA in 1963 as a technique to move liquid propellant in the low gravity of space. Pumping fluids that do not stay at the bottom of a tank by gravity is not easy.…
NASA Technology Comes to Speakers: Ferrofluid
John Strohbeen Tuesday, December 8, 2015
Are we out of our depth?
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The Early Days of Ohm
John Strohbeen Tuesday, November 10, 2015
Articles
Two New Models in 20/20K Series Walsh Speakers
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Sound Pressure Levels in Live Versus Recorded Music.
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