el 16 diciembre, 2011 en programs
In radio there are a number of expressions, words, and sayings that drive the listener to be the creator of a contingent reality between what is heard and the time-space of its perception. For me, one of these words is âetherâ. Music, sounds, lyrics, and songs could all float in the âetherâ, a general radio term that I have used several times on air. When a radio broadcaster uses the expressions âin etherâ or âthrough ether wavesâ, my mind usually goes to the idea of an invisible flying ocean or aÂ vibrating ghosted entity delivering sounds woven into a dark blue cape. Â After all, I never gave it too much thought until I recently came across the word âetherâ in the first pages of A Brief History of Time. Thanks to Galileo and Newton, we believe that there is not an absolute state of rest â motion is always observer-relative. Later, Maxwellâs theory predicted that radio and light wavesÂ were supposed to travel at a fixed speed. The problem was that this speed had to be relative to something. It was suggested that their speed was relative to a substance called âetherâ, which was present everywhere, even in empty space. Ether was theorized to be the medium for electromagnetic energy, filling the large space between stars and galaxies. For that to hold true, ether had to be a fluid substance able to fill space â but one that was millions of times more rigid than steel â without mass or viscosity, non-dispersive, incompressible, and continuous on very small scalesâŠ That was a lot to expect from any substance!
The most successful failed experiment in science
During the years between 1881 and 1887, the physicist Albert Michelson and the scientist Edward Morley performed a series of experiments to determine the existence of lightâs intergalactic medium â ether.Â It was theorized that the motion of the Earth through space relative to the motionless ether would create a wind effect called âether windâ. The âether windâ would cause slight variations in the speed of light depending on which way the light was traveling. Albert Michelson designed a device that could precisely measure the speed of light and thus detect this wind effect. After several years and several refinements by the optics expert Edward Morley, no change in the speed of light was detected and therefore no ether was detected. Disproving the existence of ether was a major step leading up to Albert Einsteinâs special theory of relativity.Â The MichelsonâMorley experiment is referred to asÂ the moving-off point for the theoretical aspects of the Second Scientific RevolutionâŠ Science moved on, but the word âetherâ retained a mystical connotation â existing in a imaginary valley somewhere within the spheres ofÂ new age prophets, literature and radio âafficionadosâ.
Lydia Kavina and LĂ©on Theremin
In this episode I trace a radiography of my perception of âetherâ, rescuing old tunes like the Italian operatic soprano Amelita Galli-Curci (1882-1963) singing the beautiful theme âCrepusculeâ; the obscure music of Don Moreland; the soothing harp of Dorothy Ashby; orchestral sounds of Frank Chacksfield and Glenn Miller, Spade Cooley & The Western Swing Dance Gang and the exotic Lord Beginner. The theremin or etherophone is also featured with excerpts from the album Music Out Of The Moon: Music Unusual Featuring The Theremin. Curiously, in a recent book byÂ David M. Harland, The First Men on the Moon, we learn that the astronauts of Apolo 11 âhad a cassette player with a variety of music tapesâ. Armstrong brought to space DvorĂĄkâs New World Symphony and Music Out Of The Moon,Â a collection of 6 great âspage ageâ tracks, conducted by Leslie Baxter and featuring Samuel Hoffman playing the Theremin.Â In this episode is also featured space sounds from The Voyager Golden Record and fromÂ Symphonies Of The Planets 1-5 NASA Voyager Recordings.