„Proposition 18. The earth is to the moon in a ratio greater than that which 1259712 has to 79507, but less than that which 216000 has to 6859.“

p, 125
On the Sizes and Distances of the Sun and the Moon (c. 250 BC)
Variante: Proposition 17. The diameter of the earth is to the diameter of the moon in a ratio greater than that which 108 has to 43, but less than that which 60 has to 19.

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Aristarchos von Samos Foto
Aristarchos von Samos
griechischer Astronom, Vertreter des heliozentrischen Weltb…

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Aristarchus of Samos Foto

„Proposition 15. The diameter of the sun has, to the diameter of the earth a ratio greater than that which 19 has to 3, but less than that which 43 has to 6.“

—  Aristarchus of Samos ancient Greek astronomer and mathematician

p, 125
On the Sizes and Distances of the Sun and the Moon (c. 250 BC)
Variante: Proposition 10. The sun has to the moon a ratio greater than that which 5832 has to 1, but less than that which 8000 has to 1.

Aristarchus of Samos Foto
Aristarchus of Samos Foto
Aristarchus of Samos Foto
Aristarchus of Samos Foto

„Proposition 9. The diameter of the sun is greater than 18 times, but less than 20 times, the diameter of the moon.“

—  Aristarchus of Samos ancient Greek astronomer and mathematician

p, 125
On the Sizes and Distances of the Sun and the Moon (c. 250 BC)
Variante: Proposition 7. The distance of the sun from the earth is greater than eighteen times, but less than twenty times, the distance of the moon from the earth.

Aristarchus of Samos Foto
Aristarchus of Samos Foto
Aristarchus of Samos Foto
Aristarchus of Samos Foto
Aristarchus of Samos Foto
Aristarchus of Samos Foto
A.W. Bickerton Foto
Aristarchus of Samos Foto
W. Somerset Maugham Foto
Aristarchus of Samos Foto
Francesco Petrarca Foto

„Man has no greater enemy than himself.“

—  Francesco Petrarca Italian scholar and poet 1304 - 1374

I have acted contrary to my sentiments and inclination; throughout our whole lives we do what we never intended, and what we proposed to do, we leave undone.
As quoted in An Examination of the Advantages of Solitude and of Its Operations (1808) by Johann Georg Ritter von Zimmermann

Thomas Robert Malthus Foto

„The moon is not kept in her orbit round the earth, nor the earth in her orbit round the sun, by a force that varies merely in the inverse ratio of the squares of the distances.“

—  Thomas Robert Malthus British political economist 1766 - 1834

Quelle: An Essay on The Principle of Population (First Edition 1798, unrevised), Chapter XIII, paragraph 2, lines 19-22

Johannes Kepler Foto

„There is a force in the earth which causes the moon to move.“

—  Johannes Kepler German mathematician, astronomer and astrologer 1571 - 1630

Essay dedicated to the Archduke Ferdinand, as quoted in Kepler (1993) by Max Caspar, Sect. II, Ch. 9, p. 110
Original: (la) In Terra inest virtus, quae Lunam del.

Immanuel Kant Foto

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