The theory of general relativity predicts that a sufficiently compact mass will deform spacetime to form a black hole.
For road vehicles, steam propulsion has the advantage of having high torque from stationary, removing the need for a clutch and transmission, though start-up time and sufficiently compact packaging remain a problem.
There seemed a faint possibility here, if they could devise an envelope and a sufficiently compact source of heat.
The toleta is a rather simple table, easy to consult and perform calculations with, and sufficiently compact to be memorized by navigators (as Bianco recommends).
The best-known examples are black holes: if mass is compressed into a sufficiently compact region of space (as specified in the hoop conjecture, the relevant length scale is the Schwarzschild radius), no light from inside can escape to the outside.
According to general relativity, the gravitational collapse of a sufficiently compact mass forms a singular black hole.
When mass is concentrated into a sufficiently compact region of space, general relativity predicts the formation of a black hole - a region of space with a gravitational effect so strong that not even light can escape.
Credit for the original idea may belong to George F. Green, who proposed it back in 1879 but was probably unable to build or obtain the sufficiently compact motor required by his design.
Even his friends began to doubt him, believing that, at 5 feet 11 1/2 inches, he was not sufficiently compact to be a world-record marathoner.
I had to detect a pattern sufficiently compact, and then produce a complementary pattern on the ship; negative where the wall is positive and vice versa.