Three Basic Principles of Quantum Mechanics
-
The event probability P in an ideal experiment is given by the
square of the absolute value of complex number which is called the probability
amplitude (or shortly "Amplitude") :
P = ½f½2
= φ · φ*
-
If there are few possible events then can be applied so called
superposition principle (linear combination):
f = φ1
+ φ2
P = ½f½2 = ½f1
+ φ2½2
← Interference
-
If one carry out an experiment in which it is possible to choose
alternative decision then the total probability is as follows:
P = P1 + P2 = ½f1½2
+ ½f2½2
← no Interference
Contrary to classical description of nature we can only talk about
the event probabilities in quantum mechanics.