The fact that a particle cannot be precisely localized is the:
a. photoelectric effect
b. uncertainty principle
c. principle of a hologram
d. principle of a laser
e. reason why photons are emitted

Hi again, answer123:

The answer here is b)uncertainty principle.

The uncertainty principle says basically: "The more precisely the
POSITION is determined, the less precisely the MOMENTUM is known"


For references:
"The Uncertainty Principle"
http://hyperphysics.phy-astr.gsu.edu/hbase/uncer.html


"Heisenberg's Uncertainty Principle"
http://thorin.adnc.com/~topquark/quantum/heisenbergmain.html


"The Uncertainty Principle"
http://theory.uwinnipeg.ca/physics/quant/node7.html


Search keywords:
uncertainty principle

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I hope this helps, please feel free to request of any clarifications
that you need.

livioflores-ga