![]() The reason most people don’t think of the recycling industry as innovative is that they normally associate recycling with a curbside waste collection where the only innovations they see have to do with the trucks and bins used for that collection.Īs a recycler, however, our experience is quite different. For the rest of us, we just take for granted that technology has found a way to recycle everything we throw out. It is always looking for and developing new and effective technologies to collect and process end-of-life material. made a bold speculative leap.Recycling Cathode Ray Tubes…A Real Source Of Industrial Innovationįor the curious minds among us, the recycling industry is a really fascinating place. Thomson refined some previous experiments, designed some new ones,Ĭarefully gathered data, and then. When Lenard passed cathode rays through a metal foil and measured how far they traveled through various gases, he concluded that if these were particles, they had to be very small. Of their mass to their charge was over a thousand times smaller than the ratio for the smallest charged atom. In Germany, in January 1897 Emil Wiechert made a puzzling measurement indicating that the ratio ![]() In France, Jean Perrin had found that cathode rays carried a negative charge. Ther experiments cast doubt on the idea that these were ordinary particles of matter, for example gas molecules as some suggested. Hertz and his student Philipp Lenard also placed a thin metalįoil in the path of the rays and saw that the glass still glowed, as though Not deflected in the way that would be expected of electrically charged When the German physicist Heinrich Hertz passed the rays through an electricįield created by metal plates inside a cathode ray tube, the rays were When physicists movedĪ magnet near the glass, they found they could push the rays about. Were needed to resolve the uncertainties. It ought not to be difficult to discriminate between views so different, yet experienceĬase." - J.J. Thomson, thought that all material particles themselves might be some kind of structures built out of ether, so these views were not so far apart.Īre held as to these rays. Maybe cathode rays were similar to light waves? Another possibility was that cathode rays were some kind of material particle. Hat could these rays be? One possibility was that they were waves traveling in a hypothetical invisible fluid called the "ether." At that time, many physicists thought that this ether was needed to carry light waves through apparently empty space. Evidently some kind of ray was emitted by the cathode and lighting up the glass. In 1859 a German physicist sucked out still more air with an improved pump and saw that where this light from the cathode reached the glass it produced a fluorescent glow. and the interior of the tube would glow in lovely patterns. They took a glass tube with wires embedded in opposite ends. ![]() Thomson,Ĭience lecturers who traveled from town to town in the mid nineteenth century delighted audiences by showing them the ancestor of the neon sign. Us so promising an opportunity of penetrating the secret of electricity." - J.J. ![]() "There is no other branch of physics which affords
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