Quotes About Thermodynamics

Heat Considered as a Mode of Motion.

It reflects a prevailing myth that production technology is no more amenable to human judgment or social interests than the laws of thermodynamics, atomic structure or biological inheritance.

He had made a discovery of the first magnitude. It opened up an entirely new approach to physics, which led to statistical mechanics, to a proper understanding of thermodynamics and to the use of probability distributions in quantum mechanics. If he had done nothing else, this breakthrough would have been enough to put him among the world's great scientists.

The increase of disorder or entropy is what distinguishes the past from the future, giving a direction to time.

the entropy of an isolated system always increases, and that when two systems are joined together, the entropy of the combined system is greater than the sum of the entropies of the individual systems.

My investigations revealed a deep and previously unsuspected relationship between gravity and thermodynamics, the science of heat, and resolved a paradox that had been argued over for thirty years without much progress: how could the radiation left over from a shrinking black hole carry all of the information about what made the black hole? I discovered that information is not lost, but it is not returned in a useful way—like burning an encyclopedia but retaining the smoke and ashes.

Our subjective sense of the direction of time, the psychological arrow of time, is therefore determined within our brain by the thermodynamic arrow of time. Just like a computer, we must remember things in the order in which entropy increases. This makes the second law of thermodynamics almost trivial. Disorder increases with time because we measure time in the direction in which disorder increases. You can't have a safer bet than that!

The problem with using gunk as the starting material for generating organized life is that the random thermodynamic forces that were available in the primordial earth—the billiard-ball-like molecular motions that we discussed in chapter 2—tend to destroy order rather than create it.

The First Law of Thermodynamics says that energy and matter cannot be created or destroyed. If this is true, how is it possible that all the energy and matter in our universe were created in the Big Bang?

The laws of thermodynamics were very clear on the subject – all debts must be paid in full.

Clausius summarized his application of entropy to thermodynamics in two dramatic phrases that had a big impact at the time. They were (1) First Law: The energy of the universe is constant, and (2) Second Law: The entropy of the universe tends to a maximum.

Meteorologists don't use a script, and most create their own graphics and certainly put together their own forecasts. Most of us went to school to become scientists - at least I did - and studied thermodynamics, physics, and tons of calculus to take this young science to the next level. Our accuracy is amazing and will only continue to improve.

We could not, for example, arrive at a principle like that of entropy without introducing some additional principle, such as randomness, to this topography.

So either closed timelike curves can't exist, or big macroscopic things can't travel on truly closed paths through spacetime—or everything we think we know about thermodynamics is wrong.

Once or twice I have been provoked and have asked the company how many of them could describe the Second Law of Thermodynamics. The response was cold: it was also negative. Yet I was asking something which is about the scientific equivalent of: Have you read a work of Shakespeare's?

What an organism feeds upon is negative entropy. Or, to put it less paradoxically, the essential thing in metabolism is that the organism succeeds in freeing itself from all the entropy it cannot help producing while alive.

Making things (cement, steel, plastic) 31% Plugging in (electricity) 27% Growing things (plants, animals) 19% Getting around (planes, trucks, cargo ships) 16% Keeping warm and cool (heating, cooling, refrigeration) 7%

That's what makes the creationist viewpoint not just staggeringly wrong, but sadly impoverished. In twisting around the Second Law of Thermodynamics, they take a powerful tool for understanding the world and try to make it into a barrier to understanding instead.

But there is a silver lining here. By inspiring people to learn the fundamental features of nature described by the Second Law of Thermodynamics, creationists can actually inspire a richer appreciation of the mechanism of evolution.

Nature's Compensation: Entropy The [second] law that entropy always increases, holds, I think, the supreme position among the laws of Nature. … if your theory is found to be against the second law of thermodynamics I can give you no hope; there is nothing for it but to collapse in deepest humiliation.

The 2nd law of thermodynamics has the same degree of truth as the statement that if you throw a tumblerful of water into the sea, you cannot get the same tumblerful of water out again.

The popularity of perpetual motion machines is widespread. On an episode of The Simpsons, entitled "The PTA Disbands," Lisa builds her own perpetual motion machine during a teachers' strike. This prompts Homer to declare sternly, "Lisa, get in here…in this house we obey the laws of thermodynamics!

Dutifully following the second law, we conclude that today's state derives from yesterday's even lower entropy state. And that state, we envision, derives from the day-before-yesterday's still lower entropy state, and so on, yielding a trail of ever-decreasing entropy taking us ever farther back in time until we finally reach the big bang.

Entropy can decrease. It's just ridiculously unlikely.