Shadowfish wrote:the speed of light would be exactly 3*10^8 m/s. I can't be bothered to remember all of those digits.
Why not call it an even billion, and the metre would be a lot closer to a foot.
gmalivuk wrote:I think the first thing to do would be to actually define the goddamn kilogram. Right now, it's just "defined" as the mass of some standard chunk of metal.
The reason for this is that it's a lot easier to precisely compare two masses than to measure just about any of the properties one might use to define it.
bonder wrote:I'd take a tip from the high energy physicists: redefine so that c = h = h_bar = mu_naught = epsilon_naught = pi = G =1.
High energy physicists actually do things like this (I admit I carried it a bit to the extreme) but then at the end of their calculations, they use dimensional analysis to find out how many c's and h_bar's etc. that they need for the correct answer.
Once, a high energy physics professor was doing a calculation in class and in order to get the right answer in the end said "and we can see through dimensional analysis, we need a 2*pi in here"....
You can't set pi to 1, but you can define some of those constants as being 1/pi or 2pi or something times what it is normally / in other systems
kwan3217 wrote:What would I change? Simple. Make the meter 1/10 as long as it is now, and make a gram the mass of 1 (new) m^3=1(new)liter=1(old)liter of water. Since the mass system isn't really based on water anymore, just say that the kilogram artifact is exactly one new gram.
This of course would propagate through all the electrical units in interesting ways, but my guess is that amps and farads wouldn't be too large to use anymore.
The amp was actually arbitrarily defined to be the size it is now. Your units would actually propagate through quite a lot in interesting ways. If we hold the Amp to be the same value it is now, we have:
Code: Select all
(based on the assumption that all these use the new gram where they used the old kilogram)
Force 0.1 N
Pressure 10 Pa
Energy 0.01 J
Power 0.01 W
Voltage 100 V
Capacitance 0.01 F
Resistance 100 Ohm
Conductance 0.01 S
Magnetic flux 100 Wb
If you made the amp smaller, the volt and ohm would be even bigger, along with the weber (the farad and siemens would be smaller). Though, the amp isn't "too big" - it's too big for microelectronics, but not for, you know, power line engineering, etc.