The Mechanical Universe...and Beyond is a critically-acclaimed series of 52 thirty-minute videotape programs covering the basic topics of an introductory university physics course. This well produced and highly informative 52 episode series, hosted by David Goodstein of Caltech, is available as Video on Demand (Note: simple registration required to view videos).
posted on Feb 6, 2008 - View this thread

Physicists have 'solved' mystery of levitation Professor Ulf Leonhardt and Dr Thomas Philbin, from the University of St Andrews in Scotland, have worked out a way of reversing ... the Casimir force, so that it repels instead of attracts. Their discovery could ultimately lead to frictionless micro-machines with moving parts that levitate. But they say that, in principle at least, the same effect could be used to levitate bigger objects too, even a person.
posted on Aug 19, 2007 - View this thread

Reversible flow! In the 1960s, the National Committee for Fluid Mechanics Films produced a series of films for education in fluid mechanics. This clip is part of "Low Reynolds Number Flow"; you can find the entire collection streamed here. Interesting demonstrations abound. (1st link is QT; rest are RealPlayer.)
posted on Aug 17, 2007 - View this thread

The astronomical clock in the French city of Besancon is quite a mechanical marvel. Built in 1860, its inner workings are comprised of more than 30,000 interoperating pieces, driving 37 separate clockface gauges. It is one of the finest intersections between art & mechanics that I've ever come across.
posted on Jul 4, 2006 - View this thread

Does dark matter exist? Dark matter has been suggested as a solution to the galaxy rotation problem where individual stars don't seem to rotate the way Newton's laws would predict. Now, some scientists are saying that observations fit with Einstein's general relativity, without any dark matter needed. I just find it amazing that no one has tried this yet.
posted on Oct 10, 2005 - View this thread

Machine by SymmetryLab: fixed points, spinners, pistons, elastics, and connectors. Dig the frictionless world.

SymmetryLab's other stuff is noteworthy as well.
posted on Apr 30, 2005 - View this thread

An Industrial Art Gallery Is it just me, or do you find hand-drawn mechanical diagrams capturing concepts of physics strangely soothing?
posted on Jan 18, 2005 - View this thread

How engines work. This isn't new but it's a great resource for the mechanically minded and the mechanically challanged as well. It includes animations and step by step descriptions of how most existing engines work, from Steam Locomotive to Jet Propulsion. Simple yet informative.
posted on Mar 11, 2002 - View this thread

Really, really nice... lots of lovely devices...
posted on Nov 21, 2001 - View this thread

Future of computing - Light or Molecules?
posted on Jun 23, 2001 - View this thread