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The shell method goes as follows: Consider a volume in three dimensions obtained by rotating a cross-section in the xy-plane around the y-axis. Suppose the cross-section is defined by the graph of the positive function f(x) on the interval [a, b]. Then the formula for the volume will be:
Albert Angelo is the second novel written by the experimental novelist B. S. Johnson (1933–1973). Published in 1964 by Constable (and reissued in 1987 by New Directions), the book achieved fame for having holes cut in several pages as a narrative technique.
The Hollow Earth is an obsolete concept proposing that the planet Earth is entirely hollow or contains a substantial interior space. Notably suggested by Edmond Halley in the late 17th century, the notion was disproven, first tentatively by Pierre Bouguer in 1740, then definitively by Charles Hutton in his Schiehallion experiment around 1774.
As the race in space was winding down, soviet scientists turned inwards. You'd never guess that this is the site of one of their great achievements. This hard-to-find rusty cap in the ruins of a ...
The World Inside is a science fiction novel by American writer Robert Silverberg, published in 1971. The novel originally appeared as a series of shorter works in 1970 and 1971, all but one published in Galaxy , including the Hugo nominated novella "The World Outside".
The name derives from the shape of the diagram, i.e. a disc with a hole in the middle. The centre hole of the model depicts the proportion of people that lack access to life's essentials (healthcare, education, equity and so on) while the crust represents the ecological ceilings (planetary boundaries) that life depends on and must not be ...
According to the Independent, the idea was conjured up by the French company, Bic, who added the holes to prevent people from choking to death if they were to accidentally swallow one.
Donald Forrester Brown (23 February 1890 – 1 October 1916) was a New Zealand recipient of the Victoria Cross, the highest award for valour in the face of the enemy that could be awarded at that time to members of the British and Commonwealth armed forces.