Flat Earth. Tierra plana
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- Category: General
- Published on Sunday, 03 November 2019 06:23
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The flat Earth model is an archaic conception of Earth's shape as a plane or disk. Many ancient cultures subscribed to a flat Earth cosmography, including Greece until the classical period, the Bronze Age and Iron Age civilizations of the Near East until the Hellenistic period, India until the Gupta period (early centuries AD), and China until the 17th century.
The idea of a spherical Earth appeared in Greek philosophy with Pythagoras (6th century BC), although most pre-Socratics (6th–5th century BC) retained the flat Earth model. In the early fourth century BC Plato wrote about a spherical Earth, and by about 330 BC his former student Aristotle provided evidence for the spherical shape of the Earth on empirical grounds. Knowledge of the spherical Earth gradually began
El eterno militarismo parasitario
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- Published on Friday, 01 November 2019 20:12
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Jiménez Espriú rechaza el control militar de puertos y marina mercante; defiende mando civil
- Written by Info-Transportes
- Jueves, 31 Octubre 2019 00:00
CIUDAD DE MÉXICO.- Javier Jiménez Espriú, Secretario de Comunicaciones y Transportes (SCT), rechazó la iniciativa de Ley para transferir la totalidad de la marina mercante a la Secretaría de Marina (Semar), como ha sido propuesto por un grupo de diputados del partido oficial Movimiento de Regeneración Nacional (Morena).
En su comparecencia ante comisiones de la Cámara de Diputados, mostró su desacuerdo con lo que denominó militarización de la marina mercante.
“Nunca la Secretaría de Comunicaciones y Transportes fue consultada al respecto”, y afirmó, “no estamos de acuerdo de ninguna manera en lo que se plantea de llevar a la militarización a una actividad que
THE STELLAR COMPASS AND THE KAMAL AN INTERPRETATION OF ITS PRACTICAL USE
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- Published on Tuesday, 29 October 2019 20:25
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Texto completo, pinchar aquí.
http://chcul.fc.ul.pt/textos/malhao_pereira_2003a.pdf
The Stellar Compass and the Kamal
Comunicação apresentada pelo C. M. G. José Manuel Malhão Pereira em 14 de Março de 2003 na India
International Centre em New Delhi, Índia, durante o «International Seminar on Marine Archaelogy».
Introduction Dear Flag Officers dear members of the table, dear comrades of the Indian Navy, ladies and gentlemen. It is not only an honour to be here in Delhi again, participating in such an important event, but it is also a special opportunity for my wife and me to see again the friends we made before. Besides that, this time we are meeting new friends in two different areas, the archaeology and the navy, to whom I
Latitude
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- Published on Thursday, 31 October 2019 22:23
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https://www.revolvy.com/page/Latitude?cr=1
n geography, latitude is a geographic coordinate that specifies the north–south position of a point on the Earth's surface. Latitude is an angle (defined below) which ranges from 0° at the Equator to 90° (North or South) at the poles. Lines of constant latitude, or parallels, run east–west as circles parallel to the equator. Latitude is used together with longitude to specify the precise location of features on the surface of the Earth. On its own, the term latitude should be taken to be the geodetic latitude as defined below. Briefly, geodetic latitude at a point is the angle formed by the vector perpendicular (or normal) to the ellipsoidal surface from that point, and the equatorial plane. Also defined are six auxiliary latitudes which are used in special applications.
Paseo por la Sevilla de magallanes, Elcano, Faleiro.
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- Published on Tuesday, 29 October 2019 19:27
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https://www.iaph.es/circunnavegacion/guiadeviaje/index.html#28