half cycles

Non-symmetrical waves are possible, and in fact common. Some natural signals and almost all information carrying signals are non-symmetrical.

It is possible to generate any arbitrary wave form.

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More info? This get you rapidly into electrical engineering. Years to learn, because so much depends on so much else. But the basics can be found in a good 2nd year physics text.

You can also search the 'Net. Start with words like frequency, amplitude, phase, etc. Then look up other words you don't recognize in the hits you get. You will be flooded with information, unfortunately.

Or you can always get a BS EE


Regards,
LB

BTW, understanding this kind of thing will really help you understand (some aspects of) physics, so while this is not a good place to learn the nuts and bolts, it is a good place to get some pointers and some encouragement.

Thanks for that Larry - and youre right about the flood of info lol
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Kingdavid, You are asking a very interesting question that seems to divide QM and MM modeling down the middle. Can a hertz be divided? Not in QM but as I (mis)undertand MM everything is made of smaller things. So, you can divide a hertz. I prefer the QM way because it is simplier.