It can get really interesting when you start to try to convert things like force or power in archaic terms.
“Since Einstein introduced special relativity, the theory and the special status it gives to the speed of light have appeared iron-clad.
Until now, that is. Scientists working on the OPERA experiment at the CERN laboratory in Switzerland beamed neutrinos 454 miles (730 kilometers) underground to Italy, and calculated how fast they made the trip. Shockingly, the neutrinos appeared to beat light speed by 60 billionths of a second. The finding appears to fly in the face of the last 106 years of physics.
“Our understanding hasn’t evolved at all, we’ve been doing extremely precise tests of special relativity since the very first days,” said Ben Monreal, an assistant professor of physics at University of California, Santa Barbara. “Special relativity has been passing tests with flying colors for over 100 years now. That is why this result is so surprising and unexpected.”
If the finding of the OPERA experiment does pan out, the implications are much more mind-bending. Under special relativity, if something travels faster than the speed of light, it goes backwards in time. Such a proposition could interfere with the basic rule that cause precedes effect, called causality.
“The reason a lot of physicists are very unmoved by these claims is that it could make causality itself very problematic,” Galison said. In other words, it raises the prospect of time travel.
There is another issue too. Einstein introduced the speed of light as a mathematical constant, c. If neutrinos can indeed exceed the speed of light, then c loses its special status, giving rise to a host of other problems elsewhere in physics, where c has been used in calculations, such as the famous formula E=mc^2. [Warped Physics: 10 Effects of Faster-Than-Light Discovery]
“For all of these reasons, people are going to need extra evidence to conclude that it is going to hold up,” Galison said.”
http://www.livescience.com/16248-speed-light-special-relativity-neutrinos.html
Gonvert is fun to mess with thanks for the pointer. I have been making improbable conversions all night. i.e. speed of sound in cubits per hour, rods/sec.