20092008 | 5 11 | 1 0 | 6 0 | 25 14 | 19 13 | 21 7 | 12 2 | 2 0 | 0 0 | 0 0 | 0 0 |
Mtr: | MMX | ¼A | ½A | A | B | C | D | E | F | G | H |
Which Fish Are Okay to Eat? [Interactive]
2 days ago
Trains, rocketry, experimental photography, chemistry, and other mad science
20092008 | 5 11 | 1 0 | 6 0 | 25 14 | 19 13 | 21 7 | 12 2 | 2 0 | 0 0 | 0 0 | 0 0 |
Mtr: | MMX | ¼A | ½A | A | B | C | D | E | F | G | H |
2009 2008 | 5 11 | 1 | 6 | 25 14 | 19 13 | 21 7 | 12 2 | 2 | |||||||||
Mtr: | MMX | 1/4A | 1/2A | A | B | C | D | E | F | G | H | I | J | K | L | M+ | unkn |
note that if you measure distance in seconds velocity becomes dimensionless. In particular you could put c = 1. All velocities would then be measured as fractions of c.
The idea is similar to lightseconds but not the same, since lightseconds is actually a unit of length, whereas here we have introduced a system of units in which any dimensionfull quantity can be expressed as any other one (if we also have h = G = 1). That is we can express mass as a certain multiple of an inverse meter, or second. So mass is really the same as a frequency. And of course in this system all our usual units correspond to particular dimensionfull quantities: one meter, one second, etc. And thus they can be expressed in terms of each other.