Constants Definition and 458 Threads

Source: Anderson, Principles of Relativity Physics p. 13, prob. 1.4 "Reparametrize the rotation group by taking, as new infinitesimal parameters, ε1 = ε23, ε2 = ε31, and ε3 = ε12 and calculate the structure constants for these parameters." My assumptions: (1) The εij mentioned in...

In a thread in PF's Special and General Relativity ("What if the speed of light was slower") there is a discussion on physical constants, including c. lethe pointed out that there are only 26* truly fundamental constants, and posted a link to a John Baez page with a discussion of these...

What is the purpose of all the Planck's stuff? Planck's length, Planck's energy. And what is Boltzman's constant? On my calculater (PCalc 2 for mac) what is the "Universal Gas" (8.31451)?

A block of mass 12.0 kg slides from rest down a frictionless 37.0 degree incline and is stopped by a strong spring with k=3.50e4 N/m. The block slides 3.00 m from the point of release to the point where is comes to a rest against the spring. When the block comes to rest, how far has the spring...

I would dearly like to know what material has the highest relative dielectric constant and how much is it?

I have been playing a bit with the units of coupling constants. Instead of setting c=1, h=1 (natural units) it is interesting to set c=1 but still to keep h explicit in the formulae. You may know that in natural units there is a basic difference between electromagnetism and gravity, namely...

Is there anywhere I can get a decent print out of the most predominanent constants and equations?

Some people try to memorize the digits of Pi, but why do they do it ? They say that first of all some day you may use all those digits, and secondly it helps you train your memory. I tried, i memorized the first 120 digits, then i got bored ! So, do you people think that memorizing some...