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  • Title: First Lecture (First Scientific Lecture-Course)
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    • wave-movement in the ether. They do not pause to think, whether it is
    • the latter being the supposed wave-movement in the ether, or else the
    • light or colour for example, the objective wave-movement in the
    • “objective” wave-movements in outer space. What he
  • Title: Second Lecture (First Scientific Lecture-Course)
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    • wave-movements or corpuscular emissions, all in the abstract. By
  • Title: Fourth Lecture (First Scientific Lecture-Course)
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    • prettiest accounts of what is happening according to the wave-theory,
    • reflect that no one ever figures out, when one wave rushes
    • expansion, known as waves, we imagine sound to spread. To begin with,
    • they assumed that waves of this kind are also kindled in the ether.
    • the waves are of a different kind from those of sound. In sound there
    • Such waves are “longitudinal”. For light, this notion
    • As I said before, the fact that wave-movements in many directions
    • what will happen here? When the train of waves arrives here, it may
    • alternations of light patches and dark. The so-called wave-theory of
    • light explains them on the assumption that light is a wave-movement
    • course the waves might conceivably be there, and it might be that the
  • Title: Eighth Lecture (First Scientific Lecture-Course)
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    • place in ‘longitudinal’ waves, as they are called. This
    • the wave, the oscillations or vibrations. Thus in the same period
    • of time we have 80 beats, 80 air-waves in the one case and 40 in
    • distance it has gone through, what we call the wave-length. If
    • n such waves arise in a second and the length of each wave
    • is s, the whole wave-movement must be advancing n
    • through which the whole wave-movement advances in a second, is
    • and divided from it. Such are the wave-lengths — the spatial
    • they may well contend. There are the waves of condensation and
    • his department) therefore transforms the waves into subjective
    • outer world and finds expression in waves of alternate compression
    • imagine the sound penetrating here in the form of air-waves and
    • globe are not given until I make them. The outer air-waves can only
    • been created for this to happen. In essence the air-waves have no
    • more to do with the sound than that, where these waves are, a
    • air-waves, but so too would it modify what happens in the evacuated
    • enough to entertain a few mathematical notions about wave-movements
  • Title: Ninth Lecture (First Scientific Lecture-Course)
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    • of some genius, discovered the so-called electric waves —
    • here once again it was waves! It certainly seemed to justify the
    • too being already conceived at that time as a wave-movement in the
    • quite akin to the spreading of waves, or to what could be imagined
    • proof that with electricity something like a wave-movement is
    • generally imagines wave-movements to spread out. Even as light
    • too can the electric waves spread out, becoming manifest —
    • extent. For sound and light, they were imagining wave-trains,
    • sequences of waves. Also for warmth as it spreads outward into space,
    • they had begun to imagine wave-movements, since the phenomena of
    • same of electricity; the waves had only to be imagined long by
    • they did to establish the old wave-theories even more firmly. What
    • wave-movements through the ether. What here revealed itself was
    • the tube is not to be described as a wave-movement, propagated
    • after the manner of the old wave-theories. Instead, they now
    • showering through space. The old wave-theory was shaken. However,
    • other: neither of the old conceptions — that of ether-waves,
    • along its hidden paths. They had naturally hoped to find waves, but
    • have been able to pick out. In effect, they said: It isn't waves,
  • Title: Tenth Lecture (First Scientific Lecture-Course)
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    • of waves and undulations was followed, as we say, by a new time. It
    • was no longer possible to hold fast to the old wave-theories. The
    • geometrical and kinematical — calculable waves in an unknown
    • in the same abstract way as in the old wave-theory.
    • the wave-theory of light, or Newton's corpuscular theory, —
    • wave-theories and the like, but he is not yet able to enter with
    • of the old wave-theory, you will find many of them feeling a little
    • material concomitant, the movement of the wave. Not so in the
    • more than the material waves. I must now perceive physically, what
    • You swim in the elements of wave and undulation, the real existence
    • domain, my dear Friends. In the first place there is no wave or

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