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- Title: Prefatory Note: First Scientific Lecture-Course
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- young in mind and in ideal — those above all who seek
- Title: First Lecture (First Scientific Lecture-Course)
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- you in forming your outlook upon Nature. I hope that in no very
- distant future we shall be able to continue. On this occasion, as you
- contribute may well be of use to those of you who are teachers and
- educators, — not to apply directly in your lessons, but as a
- fundamental trend and tendency in Science, which should permeate your
- be my specific aim to help you understand that contrast between the
- Nature. You need only recall how in external, sensory experience so
- the properties of this ether. Now you are well aware how very
- things we really must reach clarity. You see, dear Friends, along the
- for you to be clear on this point, — to realize that Kinematics
- movements. You need not observe any process in outer Nature; you can
- simply think it — picture it to yourself in thought — how
- outer drawing; I could simply have instructed you in thought to form
- the mental picture; you could not but have found it valid. Yet if in
- And now I beg you to
- pulling from a to b, to be five grammes; you can
- the world of facts. If once you realize this difference between the
- Forces, you have a clear and sharp formulation of the essential
- mental pictures. You can reach movements but not forces with your
- mental activity. Forces you have to measure in the outer world. The
- Maximum number of matches per file exceeded.
- Title: Second Lecture (First Scientific Lecture-Course)
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- space and time, is a movement in the ether. Yet if you look it up in
- about the phenomena of light, you will find contradictory and
- those among you who may no longer recall it from your school days can
- simply adduce the essential elements to bring the formula before your
- us above all is this: — (I am reminding you of a formula which
- you most probably know; I only call it to your mind.) Multiply the
- side of this formula. You see in it the mass. You see from the
- — no real physiology. It does not know the human being. You
- you can indeed, but your first step must be to make yourself more
- consciously aware of this: — Press with your finger against
- something: you thus acquaint yourself with the simplest form of
- just now, you realize the mass by weighing it. Mass makes its
- exert pressure. You make acquaintance with pressure by pressing upon
- something with your finger. Now we must ask ourselves: Is there
- rather, don't! Try to exert pressure on some part of your body and
- then go on making it ever more intense. What will happen? If you go
- on long enough you will lose consciousness. You may conclude that the
- place, so to speak, on a small scale when you exert a pressure that
- is still bearable. Only in that case you lose, a little of the force
- of consciousness that you can bear it. Nevertheless, what I have
- Maximum number of matches per file exceeded.
- Title: Third Lecture (First Scientific Lecture-Course)
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- — has after all proved difficult for some of you to understand.
- Do not be troubled if this is so; you will understand it better by
- You will realize that
- the main idea of the present course is for me to tell you some of the
- things which you will not find in the text-books, things not included
- I really must ask you to swallow the bitter pill (I mean, those of
- you who found things difficult to understand). Your difficulty lies
- in the fact that you are always hankering after a phoronomical
- terms of qualities as you are here, you may well be saying to
- yourselves: Here we get stuck! You must attribute it to the unnatural
- especially to Waldorf-School and other teachers — you will
- yourselves to some extent still have to take the same direction with
- your pupils. It will not be possible, all at once, to bring the
- commonly held by physicists, so Goethe learned, that when you let
- Here we have cut it out very neatly; you see a pretty fair circle.
- the given facts. However, as you have seen, in these phenomena not
- Suppose you put two
- to get an image. You see then how the double prism treats the light.
- wide space within which such pictures could be formed. But as you
- the cylinder of light apart. If I may so express myself, you can read
- Maximum number of matches per file exceeded.
- Title: Fourth Lecture (First Scientific Lecture-Course)
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- placing before you what we may call the “Ur-phenomenon”
- by, you will find it confirmed and reinforced in the phenomena you
- Ur-phenomenon is not always easy to recognize at once. But if you
- take the trouble you will find it everywhere. The simple phenomenon
- Conversely, if you have here a simple black surface and look at it
- directly, you will see it black, but if you interpose a trough of
- water through which you send a stream of light so that the liquid is
- illumined, you will be looking at the dark through something light.
- Figure IVc). You will remember; if this is the prism and this the
- What then do you see
- in this case? Watch what you see, state it simply and then connect it
- what you actually see will emerge in all detail. Only you must hold
- to what is really seen. For if you are looking thus into the bright
- you — you see something light, namely the cylinder of light
- itself, but you are seeing it through dark. (That there is something
- in effect — you look at something light, namely at the
- cylinder-of-light coming towards you. Through what is dark you look
- at what is light; here therefore you should be seeing yellow or
- you do. Likewise the red colour below is proof that here is a region
- over-whelms the dark. Thus as you look in this direction, however
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- Title: Fifth Lecture (First Scientific Lecture-Course)
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- of which we spoke last time. You will remember: when an incandescent
- you will presently see, the elements we are compiling will pave the
- We will now shew you,
- the following experiment. You now see the complete spectrum projected
- disulphide, this light is extinguished. You see the spectrum clearly
- divided into two portions; the middle part is blotted out. You only
- carbon disulphide — you see the complete spectrum divided into
- two portions; you only see the two poles on either hand.
- “phosphores”, If you come across the word
- of that time, you need not take it to mean what is called
- not the simplest. Another phenomenon is really the simple one. If you
- oil appears slightly yellow. If on the other hand you place yourself
- so as to let the light pass through the oil while you look at it from
- interesting if you make a solution of plant green — chlorophyll
- green. But if you take your stand to some extent behind it — if
- you look from behind to where the light goes through — the
- So you have two stages. The one is Fluorescence: we make a body
- forming of ideas. There is another fundamental idea which you will
- exactly of what I shall bring forward. Think as precisely as you can.
- I will remind you again (as once before in these lectures) of the
- Maximum number of matches per file exceeded.
- Title: Sixth Lecture (First Scientific Lecture-Course)
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- saturated with the present way of thought that if you have been
- through this kind of schooling it is extremely difficult for you to
- find your way back to the pure facts. You must first cultivate the
- in a too trivial meaning. You have to learn to sense the facts, and
- VIa). Through it you look at a luminous object. As I am drawing
- circle. Cast your mind back to what you learned in your school days.
- What did they teach you of the phenomenon you see when you observe
- the luminous object, — with your eye, say, here — looking
- through the glass? You were no doubt told that rays of light proceed
- Figure). Rays, you were told, proceed from the shining object. In
- Simply by looking through the glass and comparing what you see with
- what you saw before the plate of glass was there, you do indeed
- find the direction in which the light will be refracted, you must
- is said, you will remember, in tracing how the “ray of
- the point of exit from the glass, you will have to erect the normal.
- to do so (.... or is it to the soul, or to some demon that you
- part is shifted too. But now, what is this “dark”? You
- to it). You certainly will not deny that when you look at light the
- that is all there is to it.” You see the fallacy at once in
- this example, for you know very well that the effect of being
- Maximum number of matches per file exceeded.
- Title: Seventh Lecture (First Scientific Lecture-Course)
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- colour. As I have said before, all I can give you in this Course
- did. In the last resort I wish to lead you to a certain kind of
- insight into Science, and you must look on all that I bring forward
- You have seen
- darkness. Today I will begin by shewing you the phenomenon of
- upright rod which will throw shadows on this screen. You see two
- shadows, without perceptible colour. You only need to take a good
- look at what is here before you, you will be bound to say: the
- shadow you are seeing on the right is the one thrown by the
- of the screen apart from the two bands of shadow, you will agree it
- — that is, darkened to some extent. As a result, you will see
- background does when you look sharply for example at a small red
- surface for a time, then turn your eye away and look straight at
- the white. You then see green where you formerly saw red, though
- there is nothing there. You yourself, as it were, see the green
- colour on to the white surface. In such a case, you are seeing the
- green surface as an after-image in time of the red which you were
- seeing just before, when you exposed your eye to the red surface
- source of light to red, you see the shadow green. What was mere
- darkness before, you now see green. And now I darken the same
- Maximum number of matches per file exceeded.
- Title: Eighth Lecture (First Scientific Lecture-Course)
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- speaking about sound and tone which you will find in the customary
- century at the earliest. By such examples you will most readily
- at some distance from you, you see the flash of light in the
- distance and hear the report some time later, just as you hear the
- thunder after you see the lightning. If you neglect that there is
- such a thing as a velocity of light, you may then call the time
- that elapses between your perception of the impression of light and
- your perception of the sound, the time the sound has taken to go
- the corresponding distance. So you can calculate how quickly the
- — and you get something like a “velocity of propagation
- among the first. If for example you twang a violin-string or the
- this branch of Science. I have already drawn your attention to the
- experiments; they are at hand, if I may say so. What you can get
- we are now about to demonstrate. You see this disc with its rows of
- to direct a stream of air on to the moving disc. (He did.) You can
- before; it will then lead you to the following reflection. A single
- ‘tone’. In all manner of variations you will find ever
- flesh and bone, till such results emerge as you find quoted from
- conclusion. What would become of it if I treated you, who are now
- the outcome: You, all of you, now sitting here before me, — I
- Maximum number of matches per file exceeded.
- Title: Ninth Lecture (First Scientific Lecture-Course)
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- do during these days is to give you a few points of view, with the
- explanations may be rounded off, to give you something more
- draw your attention to the development of electrical discoveries,
- beginning no doubt with things that are well-known to you from your
- You know the
- attract small bodies such as bits of paper. You know too what
- brings negative toward itself in some way. You know the phenomenon
- IXa). If you electrify a metal rod and impart the electricity
- coating thereby becomes electrified negatively. Then, as you know,
- you can connect the one coating, imbued with positive, and the
- one another. You have to make connection so that the one
- you have often witnessed the experiment.
- strong enough. You see the leaves repelling one another just a
- across the gap. Now you are also aware that this kind of
- again, I am presumably still recalling what you already know
- remind you of the main principles. Galvani observed the leg of a
- You will remember how we demonstrated it the other day. By
- as such. He found for instance that if you generate an electric
- necessary tension, you can produce the following result. Suppose we
- all, is a phenomenon not unlike what you would have if here for
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- Title: Tenth Lecture (First Scientific Lecture-Course)
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- provisional conclusion. I want to give you a few guiding lines
- which may help you in developing such thoughts about Nature for
- yourselves, taking your start from characteristic facts which you
- presented to us by Nature. You will remember what I was trying to
- element of matter. For you can imagine that a bombardment is taking
- screen which you put in the way; the space behind the screen is
- cathode rays impinge on it, and on the other side you will see
- something like a shadow of the St. Andrew's cross, from which you
- of a magnet. I beg you to observe it now. You will find the shadow
- influenced by the magnetic field. You see then, just as I might
- shew you, what was not possible yesterday, the rays that issue from
- the other pole and that are called “canal rays”. You
- shew you the kind of rays produced by this apparatus: they are
- observe the glass. You see it shining with a very strong,
- telling you how in the further study of these things it appeared
- may become for you an essential way, not only into these phenomena
- ether. This “ether” however, as you must see, proved a
- tricky fellow. Whenever you are on the point of catching it, it
- evades you. It will not answer the roll-call. In these experiments
- You see, the
- Maximum number of matches per file exceeded.
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