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The Codex Leicester, The Most Expensive Book In The World (Cost: $30.8 million)

The Codex Leicester (also briefly known as Codex Hammer) is a collection of largely scientific writings by Leonardo da Vinci. The codex is named after Sarah ThomasCoke, later created Earl of Leicester, who purchased it in 1719. Of Leonardo's 30 scientific journals, the Codex may be the most famous of all.
The Codex provides an insight into the inquiring mind of the definitive Renaissance artist, scientist and thinker as well as an exceptional illustration of the link between artand science and the creativity of the scientific process.

The manuscript does not take the form of a single linear script, but is rather a mixture of Leonardo's observations and theories on astronomy; the properties of water, rocks, and fossils; air, and celestial light.

The topics addressed include:
an explanation of why fossils can be found onmountains. Hundreds of years before plate tectonics became accepted scientific theory, Leonardo believed that mountains had previously formed sea beds, which were gradually lifted until they formed mountains.
the movement of water. This is the main topicof the Leicester Codex. Among other things, Leonardo wrote about the flow of water in rivers, and how it is affected by different obstacles put in its way. From his observations he made recommendationsabout bridge construction and erosion.

The luminosity of the moon. Leonardo speculated that the moon's surface is coveredby water, which reflects light from the sun. In this model, waves on the water's surface cause the light to be reflected in many directions, explaining why the moon is not as bright as the sun. Leonardo explained that the pale glow on the dark portion of the crescent moon is caused by sunlight reflected from the Earth. Thus, he described the phenomenon of planetshine one hundred years before the German astronomer, Johannes Kepler, proved it.

Physically, the Codex takes the form of 18 sheets of paper, each folded in half and written on both sides, forming the complete 72-page document. At one time the sheets were bound together, but they are now displayed separately. It was handwritten in Italian by Leonardo, using his characteristic mirror writing, and supported by copious drawings and diagrams.

Recent history:
The Codex is put on public display once a yearin a different city around the world, as shownin the table below. In 2000, it was displayed at Sydney's Powerhouse Museum. In 2004, it was exhibited in the Château de Chambord, and in 2005 in Tokyo. One page was exhibited at the Seattle Museum of Flight's 2006 exhibit "Leonardo da Vinci: Man, Inventor, Genius." From June to August 2007, the codex was the centerpiece of a two-month exhibition hosted by the Chester Beatty Library in Dublin, Ireland.

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Posted By mili3kid On 06:38 Sat, 15 Jun 2013

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