It’s usually a two step process. First you compute how much light the faces of an object are receiving. This depends on their orientation towards the light source. If you hold a piece of cardboard in front of a lightbulb, the front side will be illuminated and the backside will be dark. If you turn it sideways, both sides will be somewhat illuminated.
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The Battle for Castle Itter, the Austrian village of Itter in the North Tyrol, was fought in the final days of World War II in Europe, five days after the death of Adolf Hitler.
Troops of the 23rd Tank Battalion of the US 12th Armored Division led by Lieutenant John C. “Jack” Lee, Jr., anti-Nazi German Army soldiers, and imprisoned French VIPs defended the castle against a small force from the 17th Waffen-SS Panzer Grenadier Division.
The French prisoners included former prime ministers, generals, and a tennis star. It may have been the only battle in the war in which Americans and Germans fought as allies. Popular accounts of the battle have called it the “strangest” battle of World War II.
Fordlândia is a now-abandoned, prefabricated industrial town established in the Amazon Rainforest in 1928 by American industrialist Henry Ford to secure a source of cultivated rubber for the automobile manufacturing operations of the Ford Motor Company in the US.
Ford had negotiated a deal with the Brazilian government granting a concession of 10,000 km2 of land. The land was hilly, rocky and infertile. None of Ford’s managers had the requisite knowledge of tropical agriculture.
The mostly indigenous workers on the plantations, given unfamiliar food such as hamburgers and forced to live in American-style housing, disliked the way they were treated – they had to wear ID badges, and work through the middle of the day under the tropical sun – and would often refuse to work. In 1930 the native workers revolted against the managers.
By 1945 synthetic rubber had been developed, reducing world demand for natural rubber. Ford’s investment opportunity dried up overnight without producing any rubber for Ford’s tires, making Fordlândia a total disaster.