Let us next consider a point which belongs to pure mechanics, the history of the principle of virtual motions or virtual velocities.
In this form the principle of virtual velocities is identical with Huygens's principle of the impossibility of a perpetual motion.
One thing let me recommend, if you use as principles either this, or that of virtual velocities, or any other, state them broadly and in general terms.
I have marked as somewhat obscure a part of the illustration of the principle of virtual velocities.
The demonstration of the principle of virtual velocities is so easy and direct in Laplace that I cannot imagine anything capable of rendering it plainer than he has done.
This was accomplished when Lagrange supplied, as the basis of the whole of rational mechanics, the single principle of virtual velocities.
Lagrange asserts[117] that the ancients were entirely ignorant of the principle of virtual velocities, although Galileo, to whom he refers it, distinctly mentions that he himself found it in the writings of Aristotle.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "virtual velocities" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
