This shows you the differences between two versions of the page.
Both sides previous revision Previous revision | |||
advanced_notions:uncertainty_principle [2018/07/26 17:56] 77.177.199.249 [FAQ] |
advanced_notions:uncertainty_principle [2018/07/26 17:56] 77.177.199.249 [FAQ] |
||
---|---|---|---|
Line 125: | Line 125: | ||
<tabbox FAQ> | <tabbox FAQ> | ||
- | -->What's the origin of the uncertainty?# | ||
- | <blockquote>Quantum mechanics uses the generators of the corresponding symmetry as measurement operators. For instance, this has the consequence that a measurement of momentum is equivalent to the action of the translation generator. (Recall that invariance under translations leads us to conservation of momentum.) The translation generator moves our system a little bit and therefore the location is changed.<cite>Physics from Symmetry by J. Schwichtenberg</cite></blockquote> | ||
- | <-- | ||
--> Is there a time-energy uncertainty relation?# | --> Is there a time-energy uncertainty relation?# | ||
Line 175: | Line 172: | ||
<-- | <-- | ||
+ | -->What's the origin of the uncertainty?# | ||
+ | <blockquote>Quantum mechanics uses the generators of the corresponding symmetry as measurement operators. For instance, this has the consequence that a measurement of momentum is equivalent to the action of the translation generator. (Recall that invariance under translations leads us to conservation of momentum.) The translation generator moves our system a little bit and therefore the location is changed.<cite>Physics from Symmetry by J. Schwichtenberg</cite></blockquote> | ||
+ | <-- | ||