Zero, zip, nada, none: that's how much is left after you turn matter into energy, via a bomb or a power station. But what kind of power station is best? It's actually impossible to say.
I’ve heard that coal-fired power stations are dirty, wind-farms are ugly, and nuclear power stations are dangerous (but much more efficient at producing energy).
Do you agree? I don’t, and I’ll provide the supporting logic in a minute. But first let’s unpack the conventional wisdom and hold it up to the light until it withers and dies!
Power stations are designed to transform matter into energy, or one form of energy into another. If you’ve got nothing better to do, you can use Einstein’s equation, E=MC2, to work out the energy equivalent of the mass1 of any given chunk of matter. The equation says that energy (E) equals mass (M) multiplied by the speed of light (C) squared.
I’ve heard that the reason why you get so much energy via nuclear processes2 is that the speed of light (squared) is such a big number. Really?
Joule's apparatus for measuring the mechanical equivalent of heat energy. A descending weight attached to a string causes a paddle immersed in water to rotate. Caption by Wikipedia, 6 May 2014.
Originally proposed in 1899 by German physicist Max Planck, Planck units “…are also known as natural units because the origin of their definition comes only from properties of nature and not from any human construct.” (Wikipedia 5 Nov. 2016) The Planck length is 0.000000000000000000000000000000000016 meters: supposedly the shortest length possible in the universe.
Engraved portrait of Dorothy Pentreath, last native speaker of the Cornish language, of Paul near Mousehole, Cornwall (c. 1692-1777)
An example of a light cone, the three-dimensional surface of all possible light rays arriving at and departing from a point in spacetime. Source: https://commons.wikimedia.org/wiki/User:MissMJ.
I downloaded this image a number of years ago, can't remember where and can't provide attribution: apologies to the copyright-owner. Actually it's unclear as to whether dolphins were granted legal personhood status, or whether India "merely" banned the use of dolphins in aquatic theme parks. But whatever happened in reality has no bearing on whether cetaceans are or are not persons, or on how they should be treated. This issue is a great example of the relativity of values and the significance of context. The movie,
Relativity, by M. C. Escher. Lithograph, 1953.
One of the 54 so-called "wrathful deities", Karma Heruka, in union with his consort, Karma Krodeshvari, painted by Shawu Tsering and photographed by Jill Morley Smith, in The Tibetan Book of The Dead, Penguin Classics Deluxe Edition (2005)
Aztec ritual human sacrifice portrayed in the page 141 (folio 70r) of the Codex Magliabechiano. 16th century
Gaia, Primordial Deity of the Earth, painting by Anselm Feuerbach (1875)
From Einstein we learn about the relativity that applies to aspects of time and space. But relativity is even more absolute than Einstein imagined! Everything is relative, including the meaning of words,
The shortest way between two points may not always be a straight line. Sci-Fi spaceship engines warp, fold or curve space so folk can get from A to B without going through all the space between.