IBM ScanMaster

From: John Allain <allain_at_panix.com>
Date: Wed Apr 4 18:11:40 2001

>> First fax machine was over 100 years ago with synchronized
>> pendulums.

>How do you synchronize to a remote pendulum?

I'm stepping into memories now, including college physics,
But, as I recall and understand, the pendulums would basically
oscillate at the same frequency since they were of the same length.
All that would be required is to send a synch pulse at the end
of a scan (rough analog to TV VIR) to align the next full scan.
The remainder body of the pendulum swing would be kept
in tune using only the ballistic physics of the thing.

   To the other poster, the article I have is of a later
   invention, but still massivly old. (Going to get it now)

John A.
Received on Wed Apr 04 2001 - 18:11:40 BST