A Quote by Carl Ludwig

For the first time there was constructed with this machine [locomotive engine] a self-acting mechanism in which the interplay of forces took shape transparently enough to discern the connection between the heat generated and the motion produced. The great puzzle of the vital force was also immediately solved for the physiologist in that it became evident that it is more than a mere poetic comparison when one conceives of the coal as the food of the locomotive and the combustion as the basis for its life.

Carl Ludwig

Quote Topics

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Quote Author

Carl Ludwig
German - Physician
December 29, 1816 - April 23, 1895

The most convincing proof of the conversion of heat into living force [vis viva] has been derived from my experiments with the electro-magnetic engine, a machine composed of magnets and bars of iron set in motion by an electrical battery. I have proved by actual experiment that, in exact proportion to the force with which this machine works, heat is abstracted from the electrical battery. You see, therefore, that living force may be converted into heat, and that heat may be converted into living force, or its equivalent attraction through space.

James Prescott Joule

For truly in nature there are many operations that are far more than mechanical. Nature is not simply an organic body like a clock, which has no vital principle of motion in it; but it is a living body which has life and perception, which are much more exalted than a mere mechanism or a mechanical motion.

Anne Conway, Viscountess Conway

The physiological combustion theory takes as its starting point the fundamental principle that the amount of heat that arises from the combustion of a given substance is an invariable quantity-i.e., one independent of the circumstances accompanying the combustion-from which it is more specifically concluded that the chemical effect of the combustible materials undergoes no quantitative change even as a result of the vital process, or that the living organism, with all its mysteries and marvels, is not capable of generating heat out of nothing.

Robert Mayer

If you're the guy who basically shows up with coal at the locomotive, they will put it in the train. Like, they won't even assess whatever or not it's good coal. Just throw it in there.

Damon Lindelof

By 2025, more than half of the power units you see on the road will have some relevance of electrification. There may be a base combustion engine, but it is combustion and electrification that will make the machine run.

Sergio Marchionne

One: There is a low limit of weight [of about] 50 pounds beyond which it is impossible for an animal to fly. Two: The animal machine is far more effective than any we can hope to make. Three: The weight of any machine constructed for flying, including fuel and engineer, cannot be less than three or four hundred pounds. Is it not demonstrated that a true flying machine, self-raising, self-sustaining, self-propelling, is physically impossible?

Joseph LeConte

[I predict] the electricity generated by water power is the only thing that is going to keep future generations from freezing. Now we use coal whenever we produce electric power by steam engine, but there will be a time when there'll be no more coal to use. That time is not in the very distant future. ... Oil is too insignificant in its available supply to come into much consideration.

Charles Proteus Steinmetz

We used to take a used locomotive engine, tear it down, rebuild it, and put it back out there. We treated all the engines the same.

Jamie S. Miller

When I went to Harvard Law School I became interested in the connection between legal standards for safety and automobile engineering design. At that time, it was all blamed on a "nut behind the wheel," so-called, the driver. But I knew that the vehicle had a great deal to do with that because I had come across some Air Force-sponsored studies at medical schools. The Air Force found they were losing more men on the highways than in the Korean War.

Ralph Nader

There is no war on coal. Period. There are more coal jobs and more coal produced in Ohio than there were five years ago, in spite of the talking points and the yard signs.

Sherrod Brown

Horses and mules, and even sail cars, made more rapid progress than did the earliest locomotive.

John Moody

We're not our skin of grime, we're not our dread bleak dusty imageless locomotive, we're all beautiful golden sunflowers inside, we're blessed by our own seed & hairy naked accomplishment-bodies growing into mad black formal sunflowers in the sunset, spied on by our eyes under the shadow of the mad locomotive riverbank sunset Frisco hilly tincan evening sitdown vision.

Allen Ginsberg

Which was first, Matter or Force? If we think on this question, we shall find that we are unable to conceive of matter without force, or force without matter. When God created the elements of which the earth is composed, He created certain wondrous forces, which are set free and become evident when matter acts on matter.

William Crookes

Just as the system of the sun, planets and comets is put in motion by the forces of gravity, and its parts persist in their motions, so the smaller systems of bodies also seem to be set in motion by other forces and their particles to be variously moved in relation to each other and, especially, by the electric force.

Isaac Newton

It's so easy to demagogue the issue and make someone who speaks out against the internal-combustion engine sound like an insane communist, when the truth is that the internal-combustion engine is the biggest threat to my life in the next 25 years, in terms of what it's doing to our environment and how it's depleting the ozone layer and so forth.