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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 ''[[Thud!]]'', has issues with this when she turns into a bat. She has to settle for turning into many bats. Which are a pain to get back together...
** ''[[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).
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