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• Title: Cover: First Scientific Lecture-Course
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  • Printed for private circulation, for the use of
• Title: Cover Pressing Page: First Scientific Lecture-Course
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  • Printed for private circulation, for the use of
• Title: Foreword: First Scientific Lecture-Course
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  • Rudolf Steiner, in all that he created
  • cannot find adequate words in which to thank him. Our truest
  • materialism to a spiritual understanding of the World. It is a
  • materialism — Natural Science. Future generations will
  • surely be very grateful to the scientists — teachers of
  • who first revised and duplicated the notes of the lectures,
  • dissatisfied with the ways of knowledge of the immediate
  • recognized by the Darwinian school were inadequate to explain
  • those things which we can investigate by means of the outer
  • reality is experienced more intimately than by the physical
  • senses enables us to penetrate what is mechanical in Nature.
  • our deeper, latent faculties of knowledge the same
  • at this clear recognition of our state, and I was happy when
  • first for private circulation and available, to begin with,
  • accurately made, which I was quite unable to correct for want
  • more intimate circles I might speak of many things in a form
  • content of these privately printed lectures will of course
  • there be in existence a Science of Nature permeated with the
  • living Spirit, permeated with the Christ-Impulse!
• Title: Prefatory Note: First Scientific Lecture-Course
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  • a task if I were fortunate enough one day to have the
  • leisure and the means to write a scientifically up-to-date
• Title: First Lecture (First Scientific Lecture-Course)
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  • fundamental trend and tendency in Science, which should permeate your
  • rate in the background.
  • Chemistry of today, our scientists are fated in regard, whatever
  • how these “universals”, these general ideas, are related
  • calls a “Law of Nature”. This statement for example would
  • example are the three statements known as “Kepler's
  • phenomenon as it may first present itself, where it is complicated
  • correct is altogether different from the way we contemplate and form
  • serve mental convenience, not to say inertia. Whatever we may
  • illustrate by outer drawings, we might equally well imagine purely in
  • b, indicated by an arrow in the figure, to be compounded of
  • two distinct movements. Think of it thus: the point a is ultimately
  • two other movements might be carried out with the same ultimate
  • Ib). This time, the point a will signify a material thing —
  • some little grain of material substance. I exert a force to draw it
  • calculate from this figure, how big the pull a — c and
  • got to b; thus I can calculate how strongly I must pull
  • calculate this in the same way as I did the displacements in our
  • and simple), that I could calculate, purely in thought. Not so when a
  • so many times greater than the force needed to make a gramme go a
  • Maximum number of matches per file exceeded.
• Title: Second Lecture (First Scientific Lecture-Course)
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  • say it moves with a greater or lesser “velocity”. Let us
  • greater or it may be smaller. So long as we go no farther than to
  • accordingly, we shall say that the point has a greater or lesser
  • quickly. We call the rate of increase of velocity the acceleration;
  • whatever goes beyond the phoronomical domain must always be beyond
  • indicated — the loss of consciousness which you experience with
  • which ultimately issues from some mass.
  • designated m. Our consciousness is dimmed at once. If this
  • Nature which, if it does unite with our consciousness, eliminates it,
  • is in Nature, you must bring in the states of consciousness. Without
  • illustrate it with an example. Once more I take my start from
  • put a vessel there, filled up to here with water, so that the object
  • is submerged in water. Immediately, the beam of the balance goes up
  • on that side. By immersion in water the object has become lighter,
  • weight of water it displaces. If we weigh the same volume of water we
  • buoyancy and is thus formulated: — Immersed in a liquid, every
  • blood. The heavy pressure would immediately cloud our consciousness.
  • outer object in our experiment swims in the water, so does the brain
  • in which the life of man unites with the material element that
  • about by one kind of connection with the material life —
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• Title: Third Lecture (First Scientific Lecture-Course)
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  • a number of statements as to the way colours arise in and about the
  • than to fan out and separate what is already there in the light,
  • separated out of the light as such. In point of fact, I am projecting
  • only colours arise; there is also the lateral displacement of the
  • what is material — the material of the lens, which is a body of
  • through the lens. If I confronted the light with an ordinary plate of
  • glass or water, the cylinder of light would just go through and a
  • instead of the simple plate, made of glass or water, I have a lens.
  • be the intermediate colours.
  • material — though it appears transparent in all these lenses
  • material through which the light has gone is thinner here and thicker
  • goes through less matter — the force of it is greater than
  • “light-rays” have become the very basis of materialistic
  • thinking in this domain. To illustrate the point more vividly, we
  • IIId), filled with liquid — water, for example. On the
  • the eye. I can now make the following experiment. Omitting the water
  • vessel with water or some other liquid up to here. A strange thing
  • this other direction. When there was no water in the vessel I could
  • air. Now my sighting line impinges on the water. The water does not
  • water onward I must give way to the stronger resistance, and, that I
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• Title: Fourth Lecture (First Scientific Lecture-Course)
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  • Colour. Of course the phenomena get complicated; the simple
  • plate which is in some way dim or cloudy, then what would seem to me
  • water through which you send a stream of light so that the liquid is
  • in this case? Watch what you see, state it simply and then connect it
  • irradiated with light. For as I said just now, the light here
  • and stated purely as phenomena, as we have been endeavouring to do.
  • colour-spectrum, began to speculate as to the nature of light. Here
  • whereby the light is separated into seven distinct substances. He
  • are separated from the small.
  • but while these things are calculated very neatly, one cannot but
  • materialistic way. Bombarding little balls of matter would no longer
  • is propagated through the ether in the same way as sound is through
  • the sound is propagated through the air in such a way that if this is
  • the place where the sound is evoked, the air in the immediate
  • of attenuated air. Through these successions of compression and
  • angles to the direction in which the light is being propagated. When,
  • which the light is propagated. This ray, going towards the lower one
  • the Sun. But we can also generate the spectrum in another way.
  • generate a spectrum in a somewhat different way (
  • thing comes about when we combine the two experiments. We generate
• Title: Fifth Lecture (First Scientific Lecture-Course)
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  • IVh). Simply to state the fact, this then is what we have to say:
  • apparatus, we here generate the cylinder of light; we let it go
  • It has grown late and
  • all. How comes it in effect that the material bodies have this
  • relation to the light? How do they, simply by dint of their material
  • then investigated in many ways and were called
  • of whatever it is that the light does with it, appears with a lasting
  • need to get hold of today, for we shall afterwards want to relate it
  • this point. We in our process of conception have first created this
  • “time”, we ourselves have first created them by virtue of
  • effect, we can separate ourselves, while from the space and time we
  • intimately united, we learn to know and understand the real velocity.
  • inseparable from us and we ought not in thought to separate ourselves
  • just now, we swim with our etheric body. How then do we relate
  • instance you are separated by the bodily surface. Be sure you
  • important ones — which we shall need to elaborate. Only on
• Title: Sixth Lecture (First Scientific Lecture-Course)
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  • illustrated in the realm of Light.
  • saturated with the present way of thought that if you have been
  • find your way back to the pure facts. You must first cultivate the
  • by following the facts straightforwardly. Suppose this were a plate
  • was said to penetrate from a more tenuous into a denser medium.
  • what you saw before the plate of glass was there, you do indeed
  • we are asked to assume, if we be looking through such a plate of
  • glass. Here, to begin with, the light impinges on the plate, then it
  • discriminate, however delicately, between the darker and lighter
  • diverted all alone. Whatever the cone of light is bordering on
  • instance I may perhaps want to refer to some isolated light, but even
  • is this light, which may be stronger or weaker related to darkness?
  • us is to communicate, to give; whilst the effect of darkness is to
  • Something in our outer world communicates itself to us when we are
  • material existence. We have indeed paved the way, in that we first
  • separately; rather let us begin by setting out the whole complex of
  • spaces of our immediate environment and on the other hand the way we
  • has been completely lost; nay, the deliberate tendency has been,
  • given facts. The fact for instance that material bodies in the
  • neighbourhood of other material bodies will under given conditions
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• Title: Seventh Lecture (First Scientific Lecture-Course)
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  • the conventional categories of the Physics textbooks, — in
  • Relatively dark spaces are created, — that is all. Where the
  • (the left-hand) light. I make the light go through a plate of
  • which, as you focus on the white, generates the green,
  • — I with my own eye generate the contrasting colour. There is
  • this instance was mistaken, and as the error is incorporated in his
  • [After some careful experiments on a later occasion,
  • demonstrated. In the one case we get a grey, a bit of darkness, a
  • mere shadow. In the other case we permeate the shadow, so to speak,
  • permanently fixed colour, it stays as long as we create the
  • between the lens and the cornea, — a highly differentiated
  • conditions, being gradually restored to its neutral state. But the
  • clearly and accurately in the physical apparatus of the eye, the
  • water just warm enough for you to feel it lukewarm. Put both your
  • hand in water as hot as you can bear and your right hand in water
  • into the lukewarm water. You will find the lukewarm water seeming
  • state-of-warmth, brought about by your own organic process. Far
  • the state of this your own warmth you converse — communicate
  • still farther down. We experience our own state-of-warmth by
  • solid bodies. More than 90% of us is just a column of water, and
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• Title: Eighth Lecture (First Scientific Lecture-Course)
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  • description of modern Physics may be said to date back to the 15th
  • their attention was the velocity with which sound is propagated. To
  • distance and hear the report some time later, just as you hear the
  • the corresponding distance. So you can calculate how quickly the
  • be reproduced, to demonstrate this oscillatory character of air or
  • glass plate. We need not actually do all these experiments, but if
  • glass plate would reveal that this tuning-fork is executing regular
  • too can be directly demonstrated. We kindle a note in this metallic
  • movements of the metallic tube are communicated to this air. If we
  • recognize that the sound is propagated just in this way; first
  • beat back again however as soon as the body oscillates the other
  • forward; so then dilutions and condensations alternate. We can thus
  • the processes of Nature, — not to penetrate to the spiritual
  • Nature in purely materialistic ways, — not to approach Nature
  • the first to cultivate the materialistic ideas which are so
  • we are now about to demonstrate. You see this disc with its rows of
  • holes. We can rotate it rapidly. Herr Stockmeyer will be so kind as
  • which the sound is propagated.
  • arithmetical (able to be numbered and calculated), nor can they be
  • have no realities; I only have what is abstracted, separated out
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• Title: Ninth Lecture (First Scientific Lecture-Course)
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  • some material. The rod becomes, as we say, electrified; it will
  • whatever it may be, is brought about by friction. And — here
  • which has become notably fruitful in the materialistic evolution of
  • frog which was in touch with metal plates and began twitching. He
  • had discovered what Volta, a little later, was able to describe
  • mediated by the proper liquids, an interaction arises — an
  • is a state of tension between muscle and nerve, which, when it
  • led upon the one hand to the great triumphs in materialistic
  • You will remember how we demonstrated it the other day. By
  • apparatus whereby a mass of water was brought into inner mechanical
  • activity. The water thereby became warmer, as we were able to shew.
  • further. For it proves possible to calculate, down to the actual
  • we expended for example in making these vanes rotate in the water,
  • currents as they are called. Only to indicate it roughly: the flow
  • as such. He found for instance that if you generate an electric
  • revolution has here been going on, far greater in its domain than
  • those experiments where an electric current, which you can generate
  • out, evacuated. The electric current, therefore, is made to pass
  • when it goes through the highly attenuated air. It becomes even
  • I cannot go into these phenomena in greater detail, but I should
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• Title: Tenth Lecture (First Scientific Lecture-Course)
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  • physical science has so developed that materialism is being lifted
  • proved complicated. As we say yesterday, manifold types of
  • ordinarily feel to be material. Yet they are also evidently akin to
  • generate the electric current; we pass it through this tube in
  • behaves materially.
  • gaseous but even more attenuated, — revealing also that
  • that certain entities, regarded as material substances, emit
  • another thing emerges from these materials, known as radium etc. It
  • the 19th-century thinking to penetrate into the phenomena. But this
  • quadrilateral etc., — the way of thinking all these forms in
  • α' are alternate angles and therefore equal. I can
  • only we who by our own way of thinking first translate this into
  • have at first no means whatever of deciding, how our own
  • geometrical or kinematical ideas are related to what appears to us
  • in outer Nature. We calculate Nature's phenomena in the realm of
  • Physics — we calculate and draw them in geometrical figures.
  • movement. We have quite other categories of thought to go on when
  • dream is wont to symbolize. An undergraduate dreams that at the
  • originate. For this, our arithmetical, algebraical and geometrical
  • thinking must in themselves become more saturated with reality. It
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