I am working with engineering equations in a vacuum system and want to emphasize that a certain set of parameters will not work. Usually, this is due to real world effects (friction, pump efficiency factors, wear and tear of bearings, etc), but I want to emphasize that a particular setup wouldn't work even under perfect textbook conditions.
I would like to say it is "theoretically impossible", but that has a ring of just the opposite of what I would like to say! It sounds like:
a safety rating better than 100% is theoretically impossible, but the
Tesla Model S did it!
What is a word or phrase to say something is absolutely forbidden by fundamental, physical laws, even under ideal conditions?
Best Answer
I'd suggest fundamentally impossible when writing for an audience which is not familiar with the field, while obviously impossible would work for an audience which is familiar with it.