Second Law of Thermodynamics. The Second Law of…
![“Second Law of Thermodynamics. The Second Law of Thermodynamics states, “[A]lthough the total energy in the cosmos remains constant, the amount of energy available to do useful work is always getting smaller.” 70 The second law of thermodynamics assumes that the universe is a closed system because…” quote by Jeff Myers](https://sms4smile.com/q/i/393/jeff-myers-66878_air-force_second-law-of-thermodynamics-the-second_1281818.jpg)
““Second Law of Thermodynamics. The Second Law of Thermodynamics states, “[A]lthough the total energy in the cosmos remains constant, the amount of energy available to do useful work is always getting smaller.” 70 The second law of thermodynamics assumes that the universe is a closed system because there is nothing outside of it. The amount of useful energy is decreasing, therefore there must have been a time when the energy clock began ticking. 71 Walter Brown holds a Ph.D. in mechanical engineering from MIT and for many years was a professor at the U.S. Air Force Academy. “If the entire universe is an isolated system, then, according to the Second Law of Thermodynamics, the energy in the universe that is available for useful work has always been decreasing,” he says. “However, as one goes back in time, the amount of energy available for useful work would eventually exceed the total energy in the universe, which, according to the First Law of Thermodynamics, remains constant. This is an impossible condition, implying that the universe had a beginning.””
About This Quote
This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.
The second law suggests usable energy declines, implying the universe must have started at a finite point.
In simple terms: Energy loss points to a cosmic beginning.
Key Takeaway
Consider the universe’s finite past.
Themes
science
cosmology
entropy
Mood
thoughtful
inquisitive
Type
scientific
educational
When to use this quote
- physics lectures
- philosophical debates
- education
- public talks
Key Concepts
thermodynamics
closed system
energy
universe
Questions to Reflect On
- What does entropy tell us about time?
- Can a closed system truly exist?
A Different Perspective
The explanation oversimplifies complex cosmology.