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## Main Question or Discussion Point

When examining the Schrodinger equation for a particle in a square well there is a lower case “i” that shows up in the equations that never gets defined. I have checked several sources and its usage is somewhat uniform and yet not defined.

Can someone define the “i” ?

One source I am looking at is:

galileo.phys.virginia.edu/classes/252/electron_in_a_box "dot" html

It will be the first equation.

Thanks

Can someone define the “i” ?

One source I am looking at is:

galileo.phys.virginia.edu/classes/252/electron_in_a_box "dot" html

It will be the first equation.

Thanks