On Tue, Sep 18, 2012 at 2:27 PM, gary <li...@lazygranch.com> wrote: > > A similar problem occurs with matrixed LED displays mounted on machinery > that has vibration. Very common in industrial controls since they like LEDs > for readability. >
This is very evident on the new L train cars in Chicago. They have a multicolor LED sign for listing the train destination. For me at least the signs are unreadable when I try to read them from another moving train and hard to read from a platform when the structure vibrates. -- Ryan Szekeres KB9TQN _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
