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Video: How-To's
Why trains stay on the track
Apr 12, 2013
By Peter De Keles
Author
Bio
Physicist Richard Feynman thinks aloud about why trains stay on their tracks.From the BBC TV series 'Fun to Imagine'(1983).
Title:
Why trains stay on the track
LSOL.com Rating
Length
2:27
Release Date
12/21/2012
Overview
From the BBC TV series 'Fun to Imagine'(1983). Richard Feynman (1918-88) was one of the most remarkable and gifted theoretical physicists of any generation.
He was also known as the 'Great Explainer' because of his passion for helping non-scientists to imagine something of the beauty and order of the universe as he saw it.
wheel Design
Learn something new every day!
Tom Knight - 04/12/2013 - 13:41
Greasers
If everything this guy says is true, why do some railroads use greasers in curves?
Bill Ness - 04/12/2013 - 23:44
Greasers
Greasers are used primarily on very sharp turns. The NYC subways, especially the IRT lines for example, have sharp turns with greasers that can be seen from the platforms in many stations. It doesn't stop the squealing though, and that can be painfully loud!
Walter Bayer - 04/13/2013 - 07:26
Greasers
Walter, my comment might have been expressed as "If everything this guy says is true, greasers wouldn't be used in sharp curves."
