hydrography

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Ensuring maritime safety through hydrographic surveys

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World map. Continents. Oceans. Mendel thumb ok

Just How Many Oceans Are There?

Galaxy clusters like Abell 2744 can act as a natural cosmic lens, magnifying light from more distant, background objects through gravity. NASA's James Webb Space Telescope may be able to detect light from the first stars in the universe if they are gravitationally lensed by such clusters. (astronomy, space exploration, galaxies)

How Fast Is the Universe Expanding?

ripped torn flag, pirate, skull

Are There Laws on the High Seas?

A big, powerful wave breaking near the shore.

What Makes a Wave Go Rogue?

Sailboat against a beautiful landscape

Which Waters Do You Pass Through When You “Sail the Seven Seas”?

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Cathedrale St.Jean in Lyon, France has a 14th-century astronomical clock that shows religious feast days till the year 2019; Perpetual Calendar

Ten Days That Vanished: The Switch to the Gregorian Calendar

An ancient egyptian hieroglyphic painted carving showing the falcon headed god Horus seated on a throne and holding a golden fly whisk. Before him are the Pharoah Seti and the goddess Isis. Interior wall of the temple to Osiris at Abydos, Egypt.

11 Egyptian Gods and Goddesses

Aphrodite. Greek mythology. Sculpture. Aphrodite is the Greek goddess of love and beauty.

12 Greek Gods and Goddesses

A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England

Inventors and Inventions of the Industrial Revolution

Sydney New Years Eve Fireworks

Why Does the New Year Start on January 1?

pg 229Nazi parade features a banner proclaiming, "Death to Marxism."The possibility of a peaceful Germany after World War I was precluded entirely by the terms of the Versailles Treaty and theintransigent hostility of France and England. Stripped of indu

Were the Nazis Socialists?

Adolf Hitler (Nazi, nazism, German leader).

9 Things You Might Not Know About Adolf Hitler

hydrography: Media

cartography

Videos

Ensuring maritime safety through hydrographic surveys

Ensuring maritime safety through hydrographic surveys

The use of hydrographic surveying to ensure safe navigation in the North Sea.

Video: Contunico © ZDF Studios GmbH, Mainz

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