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Weathering.
Exfoliation.
Since expansion is the process of a substance's dimensions increasing, e.g., thermal expansion caused by a rise in temperature, the logical opposite would be contraction.
A rhythmic muscular contraction in the body is called Peristalsis.
Tetanus
Exfoliation.
Weathering.
Exfoliation.
Exfoliation.
Exfoliation.
constant contraction of a muscle is called the muscle tone
Tonus is the continous baseline muscle tone in the body.
The Universe is not expanding. The Universe is in equilibrium. The idea that the Universe is expanding results from a mis-interpretation of Hubble's redshift measures and the Biblical Creation Story. Einstein observed that the universe was not contracting under gravity and added a cosmological constant to "account" for the lack of contraction. This cosmological constant is an anti-gravity feature that adds expansion. mathematicians claimed that Einstein's Equations only allowed for expansion or contraction. When the redshift was discovered the deal was sealed. Hubble did not interpret the redshift as an expansion, he called it "an hither to unknown principle of nature". Hubble was correct and the current view of expansion is wrong. There is a herd mentality in physics like in Stock Market Bubbles. The Big Bang is a Bubble, there is no expansion.
Since expansion is the process of a substance's dimensions increasing, e.g., thermal expansion caused by a rise in temperature, the logical opposite would be contraction.
It does that when the engine is cooling off. It's called expansion and contraction.
The turning points of the cycle are called the peak, which is at the end of the expansion phase, and the trough, which is at the end of the contraction phase.
It is called concentric isotonic contraction.