Why is the function must be normalize ? what is the meaning of

[sciboudy]

why is the function must be normalize ? what is the meaning of normalization
I know it's ∫ψψ*=1 but what it mean ?

 

[oli4]

It means the total probability is 1

 

[Simon Bridge]

It means that the probability of finding the particle someplace in the Universe must be exactly 1.
[edit] Oli4 just beat me to it.

We need to do this because it is often easier to work out the shape of the wave-function without worrying about keeping the probabilities in line at every step.

 

[sciboudy]

Okay thank you simon and oli4