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Round Like a Ball

Mar 22nd, 2023 (edited)
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  1. Son. With your permission I wish to inquire somewhat more fully into this subject, for I do not quite understand it. You have said that the sun’s ascent is more rapid to the north of us, where summer is almost wanting, while the strength of winter is so overpowering that summer seems like a mere shadow, and where in many places both snow and ice lie all through summer just as in winter, as is true of Iceland and particularly of Greenland. But I have heard that in the southlands there are no severe winters, the sun being as hot in winter as it is with us in summer; and that in winter, when the sun has less power, both grain and other crops grow, while in summer the earth cannot endure the fervent heat of the sun and consequently yields neither grass nor grain; so that in regions like Apulia and even more so in the land of Jerusalem the heat of summer causes as great distress as the cold of winter with us. Now when you tell me that the sun’s path waxes faster here in the north than yonder in the south, I cannot see the reason why; for there the sun’s heat is as great in winter as it is with us in summer; and it is so much greater in summer that all vegetation on the earth is scorched by it. Therefore it seems to me more likely that the sun’s path waxes most rapidly where the heat is most intense. Now if you can and will clear this up for me so that I can grasp it, I shall listen gladly and attentively.
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  3. Father. I shall begin my talk on the subject that I am now to take up with a little illustration, which may help you to a clearer insight, since you find it so difficult to believe the facts as stated. If you take a lighted candle and set it in a room, you may expect it to light up the entire interior, unless something should hinder, though the room be quite large. But if you take an apple and hang it close to the flame, so near that it is heated, the apple will darken nearly half the room or even more. However, if you hang the apple near the wall, it will not get hot; the candle will light up the whole house; and the shadow on the wall where the apple hangs will be scarcely half as large as the apple itself. From this you may infer that the earth-circle is round like a ball and not equally near the sun at every point. But where the curved surface lies nearest the sun’s path, there will the greatest heat be; and some of the lands that lie continuously under the unbroken rays cannot be inhabited. On the other hand, those lands which the sun approaches with slanting rays may readily be occupied; and yet, some of these are hotter than others according as they lie nearer the sun’s path. But when the curved and steep slope of the sphere-shaped wheel moves up before the light and the beams of the sun, it will cast the deepest shadow where its curved surface lies nearest the sun; and yet, the lands nearest the sun are always hottest. Now I agree with you that Apulia and Jerusalem are hotter than our own country; but you must know that there are places where the heat is greater than in either of those just mentioned, for some countries are uninhabitable on account of the heat. And I have heard it stated as a fact, that even when the sun mounts highest, the night in those regions is very dark and quite long. From this you must conclude that where the strength and power of the sun are greater, since it is nearer, it must ascend and decline more slowly; for the night is long in summer when the sun mounts highest, and the day is long in winter when it sinks lowest. Now I shall explain this so clearly that you will understand it fully.
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  6. - The King's Mirror (Konungs skuggsjá), Chapter 7
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  9. From the Project Gutenberg version of Laurence Marcellus Larson's translation: https://www.gutenberg.org/files/61264/61264-h/61264-h.htm
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