Structure: a search for an individual system of co-ordinates
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| v Introduction |
| v About place and space |
| v About time: the rhythm of day and night |
| v About time: the seasons |
| v Projecting and relating in space |
| v Date and solar time on earth |
| v A circle as a map of space and time |
| v The notion of space-time |
| ^ |
IntroductionA few years ago, while reading and rereading Albert Einstein's booklet about his theory
of relativity, different space-time-continua as a consequence of different systems of
co-ordinates (systems like trains, the earth, rockets, et cetera), I wondered to what
extent his findings have a bearing on humans [ note ]. |
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About place and spaceIf there is going to be a search, we can best start with the familiar, with the three
co-ordinates which mark the place and space of an object. |
![]() |
![]() The
area of the piece of paper can be described by means of two co-ordinates: x en y. |
![]() On this piece of
paper stands a person. By choosing a point straight above the crossing of the co-ordinates
X and Y, we find the co-ordinate Z which stands for height. |
| It would be nice and easy if we could determine time by just looking at the clock. But it's not as simple as that. For time on our clocks has been standardized. Around 1945 the globe was divided into time zones and, as a result, large areas of the globe have the same time in force. The actual time depends on the exact place on earth, where the object (the human being) is situated (strictly speaking it depends on the situation in space, but more of that later). First we shall have to relate the object to its place on the earth. We cannot get around that. |
![]() The
piece of paper lies somewhere on the earth's surface and we are now going to use the lines
of longitude and latitude to determine the place thereon. |
![]() Now
the piece of paper, by means of two co-ordinates, has been related to an exact place on
the surface of the earth. |
![]() When
linking the highest point, the zenith straight above the object, with the center of the
earth, we connect the object spatially with the earth. |
| For the moment this should be enough about place and space. Let us now direct our attention toward time. |
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About time: the rhythm of day and nightWe will now look for the fourth co-ordinate, time. Time on the earth depends in the first place on the rotation of the earth around its axis. In 24 hours the earth turns around its axis and day and night alternate. Z = zenith A = axis of the earth E = equator |
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![]() In case this animation does not work... |
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| With the help of the pictures, we have looked from the outside at the earth while it turned around. The axis has maintained the same angle in respect to the sun. Evidently time on earth is measured on the basis of the position of the earth and our place on the earth in respect to the sun. After all this it seems that we have to look outside the earth in order to find the place of the little figure in respect to the sun. To be honest, we also need to find out more about the three spatial co-ordinates. |
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About time: the seasonsThe earth not only rotates around its axis, but also moves in an orbit around the sun.
You already knew that, but you will also notice that the proportions in the following
pictures are even more awry than on the pictures above (we make a feature out of a fault).
The slanting position of the earth's axis in its orbit around the sun proves to be of
particular importance. The direction of the slanting position, as seen from a particular
standpoint, always stays the same. This is how the seasons originate. I'd like to enter
into that now. |
1. the vernal equinox![]() Approximately March 21: the sun is on the equator, moving in a northern direction (vernal equinox). Day and night are equally long at any place on earth. As seen from the level of the
orbit, the earth is hidden behind the sun. |
| 2. summer solstice on the Tropic of Cancer ![]() At this location of the earth in its orbit,
the day is longest in the northern hemisphere. |
| 3. the autumnal equinox ![]() Approximately September 23: the sun is on the equator, moving in a southern direction (autumnal equinox). Day and night are again equally long anywhere. |
| 4. winter solstice on the Tropic of Capricorn ![]() Winter begins in the northern
hemisphere with the shortest day, whereas in the southern hemisphere it's the longest day. |
| It is clear that the rotation of the earth around its axis and its slanting position in respect to its orbit around the sun determine both the rhythm of day and night as well as the seasons on earth. But still we have not found the co-ordinate we were looking for. We have made progress though (while we enter deeper and deeper into space). An individual space-time relation has not emerged yet. In the meantime we have established a relation between the earth and the sun. However, time is the time at a location on earth: the degree of latitude and the degree of longitude together mark the time of year and the time of the day. We have seasons but not a calendar. We don't yet know at which point in the orbit of the earth we are, we don't know exactly what date we have. We do not have a fixed point in time on the basis of which we could make appointments with other people. What is the use of a clock when you can't make appointments because clocks register different times and you cannot agree upon the date? |
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Projecting and relating in spaceWe can visualize the space around the earth and the sun, the heavens, as a sphere. In
consequence we are inside that sphere. All around the inner side of that sphere we see
stars and other heavenly bodies which hardly seem to move in respect to one another. Nor
do they seem to differ in distance from the earth. The sun, the moon and the planets,
however, clearly move against the starred background. We should now imagine a large circle
lying in the same plane as the orbit of the earth around the sun. This circle is called
the ecliptic. |
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![]() Click here. |
In order to determine where on a circle something is located, the circle needs a
starting-point. We draw a line from the center of the earth to a place on the circle in such a way that the line goes exactly through the center of the sun. We could do that every day and slowly go around the circle, but we choose the exact moment when the sun is just above the equator on its way from the tropic of Capricorn in the south to the tropic of Cancer in the north. This point is generally accepted as point zero on the circle. For thousands of years this point of reference in space and time has been called 0° Aries [perforce since the time when it no longer coincided with the beginning of the constellation Aries, some 2200 years ago, and the distinction star sign became necessary]. For purposes of correction because of shifts that occur, this point is regularly verified whereby the universal time (UT) is established, for instance to facilitate space programs. |
| the vernal equinox ![]() The little
red dot on the three globes points directly toward the sun which you can imagine as
opposite that point. The globe on the right indicates the beginning of winter, when the
sun is at its most southern point, the Tropic of Capricorn. The globe in the middle gives
a picture of the moment when the center of the sun travels from south to north across the
equator, at the point of intersection of the earth's axis and the ecliptic. This moment,
when day and night in any place on earth are equally long and spring begins in the
northern hemisphere, is called the vernal or spring equinox. The globe on the left
indicates the beginning of summer. The sun has arrived at its most northern point at the
Tropic of Cancer. |
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date and solar time on earth |
![]() Now we are actually going to relate the earth to its frame of reference in space, the circle of the ecliptic. We have put the earth in the center of the circle (on the plane of the ecliptic) for measuring purposes. We could hardly take the sun as the central point as its role when measuring date and time for the earth is only that of an expedient. Seen from this angle, the sun is situated at approx. 142 degrees distance from 0° Aries on the ecliptic. On the earth's calendar it is approximately August 14th. The sun moves with an average velocity of one degree per day. |
| Now that we have found the time co-ordinate we have been looking for, we can combine space and time and try to draw a picture of the four co-ordinates for different places on the earth. |
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A circle as a map of space and time.The following examples show a number of possible places. I have chosen five locations
on the Greenwich meridian, namely: Greenwich, the most northerly place, another location
on the Tropic of Cancer, one on the Equator, one on the Tropic of Capricorn and one, the
most southern of the five places, at the same latitude as Greenwich but in the southern
hemisphere. When you click on the picture you can see the co-ordinates of the five
locations in succession. |
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![]() Click here. |
Data of the 5 charts on the left: S = 270°42', 22 December 2000; Mc = 181°12', 6:00 hour;
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| .. S = date and solar time, the t co-ordinate Mc = Midheaven, the south, indicates solar time on the local meridian, the Y co-ordinate Asc = Ascendant, the eastern horizon of a specific place at the meridian, the X co-ordinate Z = Zenith of that place, always at 90° from the Ascendant, the Z co-ordinate. |
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![]() Click here. |
Data of these 5 charts: S = 270°26', 22 December 2000; Mc = 91°47', 00:00 hour;
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| At other times than those at 6:00 h. in the first series, differences can be even greater. Around 12 and 0 hours however, differences are so slight that their relevance is not very obvious (see the second series). Nevertheless, it proved possible to determine the four co-ordinates of an object at a specific location and a specific date on earth. By relating this location both spatially and in time with the ecliptic, we have found the individual system of co-ordinates and the personal space-time relation we have been looking for. We have now also found that none of the four co-ordinates indicates either time or space exclusively. |
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The notion of space-timeBecause space-time is a continuum, because there is no interruption, we must by necessity conclude that we can only speak about apparent points of interruption on that continuum. How can we imagine such a moment and what then could be significant moments of interruption? Examples could be moments of beginning like: a birth, confirmation of a marriage, a formal proclamation or an official agreement, the launch of a rocket. Or moments of ending like: a death, the crash of an airplane, the adjudication of bankruptcy, the actual moment of arrival. In any case they should be moments and events which can be connected to a specific time and a location. What point is there in establishing the fact that every object on the surface of the earth can be connected in its own way to the sun and space? The old astrologers have studied this matter and chronology within human memory. Ever since the 18th century, the Age of Enlightenment, scientists, engaged in the mechanics of movement of objects outside the earth, call themselves astronomers. Looking at the last pictures the method of econometricians came to my mind. They manipulate their many sources of information mathematically like they do co-ordinates or dimensions. A human's existence consists of more than four dimensions, more than four aspects are of importance. Our inner space-time, our singularity, contains information in the form of our conditions and capacities, doesn't it? In order to chart a human's existence we would need to be able to handle information about more than four dimensions. Link to |