Quantum tunneling is an interesting thing.
It can be observed by using a cheap electronic part - the simple tunnel diode.
https://www.youtube.com/watch?v=upbsK0PIOb8
Oh, don’t be upset if you can’t understand this phenomenon...no one really understands it. The quantum world is very mysterious and unfathomable compared to the simple Newtonian world we all ‘seem’ to exist in... this Newtonian world is built upon the quantum world and thus is actually just as mysterious... but at least it seems to make sense to us.