[N320009] Technical Note, April 18th, 1886


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[N320009] Technical Note, April 18th, 1886

Editor's Notes

[see N319205] p. 9 drawing "Grasshopper ascertain if by compression of air the column of air which is in tune with a certain note can be increased by compression respond to higher note ie as you compress the column may be shorter If above correct changes in Barometer throws Resonator out of order-- ditto velocity of sound in air"; p. 11 drawing "Fundamental Magnetic Experiments "Put poles of magnet inch apart & then make a great variety of substances metal & insulators X through which lines of force must pass & see if there is a specific Magnetic Condctg capacity-- plot curves-- also see if current is thrown in X metals"; p. 13 "XYZ spectrum-- pass tubes filled with liquids also wires prallel & at right angles to the beam of light pass a beam of one kind of light through a tube lengthwise & move this parallel & at right angles to another beam of diferent colored light & also the spectrum & also white light-- Try these expmts also in magnetic field both directions--;" p. 15 "Make a jumb spark spectrum also flame spectrum of iron nickel and other metals & then the same in a powerful field parallel at right angles to the L of F also in a partial vac tube this between poles in various directions of a powerful magnet. Also use static from holz to change it in vacuum."



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Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
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