Werner Heisenberg (1901 - 1976)

maybe just by hearin' this you're changin' what you (hear) --
B la la la la!
Heisenberg determined that uncertainty was --

tell me my position my momentum what you (hear) --
B la la la la!
can you know the future if you cannot know the (now)

Ever since Isaac Newton the basic assumption was that a real,
concrete world existed. Didn't matter if we observed it. It was
there and doing what it did regardless of us. Heisenberg argued that
such things as the orbits of electrons did not exist in nature unless
and until we observed them.

In quantum mechanics, A times B does not always equal B times A. The
more you know the position of a particle, the less you know the
momentum -- and vice versa. According to Heisenberg's Uncertainty
Principle, electrons can jump at random from one energy state to
another, by virtue of uncertainty. This "tunneling" makes possible
nuclear reactions that power the sun.

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