Yeah, good point.

Software engineers; probably got C's in Physics.

You could have had the decency, as I did , to check for an earlier thread on this topic, especially as you're so late to the party!!!

And he got a gif working!!

Got to agree with Del - it's not a sine wave, however, not all of the shapes are semi-circles, so no GA from me.

I do wonder, though, why yours made the Home page and the first one didn't. It's only 2 below yours on the General page. CR4's not being US-Centric is it?

Edit: I see the first thread is now on home page...near the bottom.

I could have sworn there was no previous thread about it. That's my story and I'm stickin' to it.

I give him credit, though, for posting the gif. The screenshot I posted looks lame in comparison.

Nice catch Rose...A mystery though, I have it at 7 posts separation...I usually just click on all threads anyway, you'd be surprised how many posts don't make the front page, and evidently different places have different front pages...cheers!

At the time there was no concept of Sine-wave and Harmonics.

And C/s was not named Hertz.

The poster should have posted from Wikpedia

It is a gif but how to activate it on CR4 posts?

GIFs were deactivated 5 or 6 years ago because they were being over used in posts. One member seemed to have to post at least one gif for every three lines of text. Really annoying and migraine inducing - they usually involved things flashing on and off. It spoilt his informative posts.

Of course the shame is that the occasional useful gif is also deactivated. Well mostly: there are a few that get through!

Thanks with regards!