"Duane Bozarth" wrote in message
...

I know folks keep saying that, but I've never been able to observe it...

Chris DeHut - the guy who produces Woodworking at Home DVD did a nice
'speriment on this. His approach and explanation made sense to me. He used a
dial indicator to show that a depression can appear.




Now I know what you're thinking - it doesn't take a dial indicator to know
when you're depressed...