In article ,
stan wrote:
On Jul 13, 11:22*am, DerbyDad03 wrote:
On Jul 13, 8:16*am, "Colbyt" wrote:





"DerbyDad03" wrote in message

...

I was watching Ice Road Truckers last night, which is sponsored by
Craftsman, so they kept running this commercial for one of their
cordless tool lines.

They show one clip where the guy is drilling into a piece of wood
attached to a tree - steps to a tree house maybe - with a wood boring
bit. Maybe it was an optical illusion, but I'd swear the drill is
running backwards - *counter clockwise. I rewound my DVR a bunch of
times, and ran it it slow motion. It sure looked to me like the bottom
of the bit was coming up and the 3/8" marking was going away from, not
coming towards the viewer.

Has anybody else seen this?

If you watch TV films closely you can see the same thing with cars wheels in
close-ups.
I recall seeing this a lot on the old Bonanza TV series with the wagon
wheels.

It is a function of the filming process.The *film image is a mirror image of
the actual event.

--
Colbyt
Please come visit *www.househomerepair.com

The *film image is a mirror image of the actual event.

Then why isn't *everything*, including any text, backwards?- Hide quoted text -

- Show quoted text -

That's a digression.
.
What we have been discussing is 'timing'; as each part of something
rotating (in the case of wheels it could be identical-looking spokes
for example) comes into each frame of a film or TV picture. It may
then appear to be ahead of or behind the one seen in the preceding
frame. So the item my 'appear' to rotate either forwards or backwards.

Mirror or not; viewing film is a matter of the optics used and how the
film is then projected onto either a screen or into a TV transmitter.

It was possible in some film installations, for example, to adjust the
focal length etc. of the projector so that the picture could be seen
reversed and/or perhaps upside down!

WHAT IN THE WORLD ARE YOU TALKING ABOUT!?

(Hmmm. The date -- nope, not 1apr09.)

Either one early suggestion is what's happening, he's coming OUT of
the hole (or maybe he's just TESTING the gears in the drill?, or
even knowing it'll be on a tv series, watched by people from HERE,
sabototaging us by planting a flame-war seed?), or it's that
old cowboy-movie-effect of wagon-wheels APPEARING to be turning
BACKWARDS (while in full flight from the indians).

Easy demonstration. Look at the TV.

Now, either spread out your fingers and WITH ALL POSSIBLE SPEED
wave your hand back and forth between your eyes and the tv.

Better, put a FAN between you and the tv, and look THROUGH
the fan at the tv.

Better yet, no tv, put TWO fans together, and through both
look out the window or somewhere bright enough -- unless the
fans are going at the EXACT same speed (in which case you're
looking at ONE fan with WIDER blades), you'll see a slow
movement of an "artifact" (someone please say it with a bit more
care and accuracy) invented (as is everything visual, I guess)
by your brain.

Or, get two not-so-well-tuned pianos and simultaneously hit the same key
on each. Here that warbling sound? Similar effect. Maybe. Maybe
I've gone way too far off on a tanget from wagon-wheels.

Someone can surely improve on what I'm saying.

David