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No Conservation of Energy: Difference between revisions
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'''Ridcully:''' Say again.
'''Ponder:''' I mean he'll end up arriving '''as''' a circle. Fifty feet wide. }}
** Salacia, a vampire in ''[[
** ''[[Discworld]]'' magic also obeys the conservation of momentum (except for [[Flying Broomstick|flying broomsticks]]). If a wizard wants to hurl himself from the ground to the top of a tower, he has to cause a stone with an identical weight to his to fall from the top of the tower and magically link his ascent to the stone's descent.
*** Magic carpets are also exempt, although this may be because they use magic in a different way (in 'Weird Sisters' Magrat's broomstick is shown to lose its capacity to fly if it loses too much magic, and in Equal Rites, Granny's broomstick doesn't work in sunlight, although this is later solved).
** Telekinesis also gets a brief mention when it is pointed out that when you try and lever an object using your own mind as a fulcrum, the most likely outcome is that your brain gets forced out of your ears. Much training in the psychic equivalent of a gym is required.
** While the Discworld novels are reasonably respectful of conservation of energy (as much as one can be while satisfying the demands of [[Theory of Narrative Causality|Narrative Causality]] and [[Rule of Funny]]) they often play fast and loose with ''entropy''. A lot of [[
* ''[[Wild Cards]]'' shapeshifters often have a [[Hand Wave]] of "virtual particles", basically acting in ways that in no way resemble the virtual particles of real-world physics.
** However, when "Captain Trips" undergoes an uncontrolled transformation into the gigantic creature called "Monster" in one book, the narration makes it very clear that the process is sucking up a huge amount of the nearby landscape to provide the mass for the creature's huge body.
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