thermodynamics - Why does the nature always prefer low energy …
The decrease of potential energy is the consequence of the first (energy conservation) and second (evolution to more likely macro states) law of thermodynamics. As macro states with a lot of energy stored in heat (random thermal motion) contain many more micro states and are therefore much more likely, energy tends to get transferred from ...
string theory - "low-energy effective action" but in what sense ...
The previous sentence may also be applied in the classical theory: the low-energy effective action becomes accurate for calculations of interactions of waves whose frequency is much lower than the stringy frequency or, equivalently, whose wavelength is much longer than the string scale, $\lambda\gg l_{\rm string}$.
Why does noble gas electron configuration have low energy?
Jul 17, 2015 · $\begingroup$ Note that the filling rule minimizes the energy of an entire system, not necessarily the energy of a single atom. That is, if you can considerably reduce the energy of one atom at the cost of slightly increasing the energy of another, you are still ahead of the game and the system can bond. $\endgroup$ –
Why are lower energy systems stable? - Physics Stack Exchange
Apr 23, 2017 · A system in a low energy state requires energy be added from somewhere to bring it to a higher energy state. This therefore can't happen by itself. However, a system in a high energy state doesn't need external energy to tranform to a low energy state.
Examples of a lower energy state being a lower entropy state?
Jun 28, 2019 · Of the particle reactions I know of, the lower-energy state is a great stand-in for the higher-entropy state. Big particles decay into jets of little particles, excited atoms emit photons unless forbidden, and so on. Since energy is conserved, I guess they're implicitly talking about low energy density when they say low-energy.
Why was the universe in an extraordinarily low-entropy state right ...
TLDR - Gravity clumps things together, and doesn't let them spread evenly. With gravity, being spread evenly is difficult/rare and therefore low-entropy, and being clumped is easy/common and therefore high-entropy. The energy of the universe was spread evenly after the big bang, and therefore, with gravity, it was low entropy.
The Preference for Low Energy States - Physics Stack Exchange
May 11, 2013 · The statement " energy is conserved" is true in the the sum of energies, kinetic and potential, in the problem. In the case of the apple, it has potential energy before it falls which turns into kinetic energy with the fall, the sum being constant. It reaches the ground as the lowest energy state because gravitational interaction is attractive.
electromagnetic radiation - What's the difference between low …
Dec 18, 2017 · Oscillating this field more rapidly involves more energy, in the same way as the higher frequency battle ropes did. Like with the battle ropes, the light waves travel at the same speed, regardless of whether they are high frequency (high energy) or …
What makes an electron jump down to lower energy level?
Aug 11, 2020 · Higher energy orbitals are in general larger than lower energy orbitals. So an electron tends to move toward lower energy orbitals. Classically, it would gain kinetic energy as it does so. Quantum mechanically, it emits the energy in a photon instead. The behavior of the quantum mechanical electron is governed by quantum mechanical laws.
Why does sunlight have low entropy? - Physics Stack Exchange
Jan 8, 2024 · Sunlight is low entropy because the sun is very hot. Entropy is essentially a measure of how spread out energy is. If you consider two systems with the same amount of thermal energy, then the one where that energy is more concentrated (low entropy) will be hotter. Sunlight transmits an energy flux of ~1000W/m² to Earth's surface.