2 posts tagged with physics by filthy light thief.
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Towards the end of the 1800s, there were three primary American groups competing to invent technology to record and play back audio. Alexander Graham Bell worked with with Charles Sumner Tainter and Chichester Bell in at their Volta Laboratory in Georgetown, Washington, D.C., while Thomas A. Edison worked from his Menlo Park facilities, and Emile Berliner worked in his independent laboratory in his home. To secure the rights to their inventions, the three groups sent samples of their work to the Smithsonian. These recordings became part of the permanent collections, now consisting of 400 of the earliest audio recordings ever made. But knowledge of their contents was limited to old, short descriptions, as the rubber, beeswax, glass, tin foil and brass recording media are fragile, and playback devices might damage the recordings, if such working devices are even available. That is, until a collaborative project with the Library of Congress and Lawrence Berkeley National Laboratory came together to make 2D and 3D optical scanners, capable of visually recording the patterns marked on discs and cylinders, respectively. [more inside]
Minute Physics is a YouTube Channel full of short, simple explanations of physics. Learn why there are tides, what neutrinos are and how to find them, why there is no pink light, and why Galloping Gertie didn't collapse due to resonance. Minute Physics is also on New Scientist's website, but slightly re-titled and with links to related New Scientist articles. If you have another 41 minutes, you can learn more about Minute Physics from it's creator, Henry Reich.