"When one teaches, two learn."
[Robert Half]

Quote of the Day, from brainyquote.com (2020/12/04)

Article of the Day

Near-contemporary depiction of the battle
Near-contemporary depiction of the battle

The Battle of Pontvallain, part of the Hundred Years' War, took place in north-west France on 4 December 1370. A French army under Bertrand du Guesclin heavily defeated an English force which had broken away from an army commanded by Robert Knolles. The French numbered 5,200 men, and the English force was approximately the same size. The English had plundered and burnt their way across northern France from Calais to Paris. With winter coming, the English commanders fell out and divided their army. The battle consisted of two separate engagements: one at Pontvallain where, after a forced march which continued overnight, Guesclin surprised a major part of the English force, and wiped it out. In a coordinated attack, Guesclin's subordinate, Louis de Sancerre, caught a smaller English force the same day, at the nearby town of Vaas, also wiping it out. The French harried the surviving Englishmen into the following year, recapturing much lost territory. (Full article...)

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Image of the Day

Colorful neon street signs in Kabukichō, Shinjuku, Tokyo.jpg
Source: Wikimedia Commons.

On this day: December 4

December 4: Navy Day in India

Jeremiah Horrocks observing the transit of Venus
Jeremiah Horrocks observing the transit of Venus

Knowledge about Earth

Facts and Figures

  • Age of Earth: ~ 4.568 billion years
  • World Population: 7.3 billion (July 2015)
  • Continents: 7 (Asia, Africa, North America, South America, Antarctica, Europe, and Australia)
  • Mean Radius: 6371.0 km
  • Axial Tilt: 23,44°

Image Source: Wikipedia - License: Public Domain (thanks to NASA)

Our Solar System

Our solar system consists of
1 star (Sun) and 8 planets (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune).

  • 1 AU (astronomical unit) is roughly the distance between Earth and the Sun (about 150 million kilometres).
  • The space probe Voyager 1 was launched by the NASA in 1977 and is meanwhile (autumn 2015) about 133 AU away from Earth.

Image Source: Wikipedia - License: CC BY-SA 3.0

Why you should extend your general knowledge:

There are many reasons why one should or wants to extend his knowledge.
First you should consider that "general knowledge" is knowledge which a group of humans - who belong together regional, temporal or otherwise - owns. Thus, it describes a basic understanding of specific categories of knowledge.

As the English philosopher Francis Bacon said before: "Wisdom is Power" [Bacon 1597].