mep wrote:In my opinion it doesn't make sense to use imperial system for science. The metrical is simply better.
I've used both systems plenty, while in school and professionally. I don't agree that metric is better. It is no different. Either are trivially easy to use. After having metric extensively in years of physics classes, I still prefer imperial.
If you're already learning that Power = Torque * Angular Velocity, it's no more difficult to remember HP = Ft-Lbf * RPM / 5252. I'm sure just about every redneck, hillbilly gear head in the US can call that out from memory, so there's no excuse for professionals to not be able to handle it.
If you're already learning that 1 bar = 100 kPa, it's no more difficult to remember 1 atm = 14.7 psi, or 760 mmHg, or whatever. You have to remember Planck's constant for physics class being 6.626e-34 J, why is any other number challenging?
If I'm working on a car and know most of the suspension hardware is 6 & 8mm, that's no different than knowing that it's 1/4 and 5/16" (and need 7/16 and 1/2" wrenches)
Even C and F for temperature... if you know freezing is 0 and boiling is 100, why are 32 and 212 any damn different? A number is a number. There's nothing intuitive about boiling point being 100. Could be 1000. Could be 10. Could be 999. Doesn't matter!
Btw:. Race Car Vehicle Dynamics is written in imperial units.
Is it because it’s a quite old book?
No. Not that old, mid 90's. It is written in imperial units because it was put together by Americans. Those are the units we use. Still plenty widespread in pro motorsport here. Could we switch to Metric? Sure, we
could. It would require changing over absolutely outrageous amounts of equipment and instrumentation, for really no gain. Just a different set of numbers to use.
In the real world when you're in industry and especially manufacturing and anything involving North America, chances are you're going to have to use Imperial and Metric units at some point in your career. Might as well learn it now and be done with it. It's not going away.
Grip is a four letter word. All opinions are my own and not those of current or previous employers.