Search results
Results from the WOW.Com Content Network
The metastability of silica glass, for example, is characterised by lifetimes on the order of 10 98 years [4] (as compared with the lifetime of the universe, which is thought to be around 1.3787 × 10 10 years). [5] Sandpiles are one system which can exhibit metastability if a steep slope or tunnel is present. Sand grains form a pile due to ...
The paradox predates Buridan; it dates to antiquity, being found in Aristotle's On the Heavens. [4] Aristotle, in ridiculing the Sophist idea that the Earth is stationary simply because it is spherical and any forces on it must be equal in all directions, says that is as ridiculous as saying that [4]
A simple example of metastability can be found in an SR NOR latch, when both Set and Reset inputs are true (R=1 and S=1) and then both transition to false (R=0 and S=0) at about the same time. Both outputs Q and Q are initially held at 0 by the simultaneous Set and Reset inputs.
Metastability is basically a theory of how global integrative and local segregative tendencies coexist in the brain. [ 17 ] [ 18 ] The Operational Architectonics is centered on the fact that in the metastable regime of brain functioning, the individual parts of the brain exhibit tendencies to function autonomously at the same time as they ...
A nuclear isomer is a metastable state of an atomic nucleus, in which one or more nucleons (protons or neutrons) occupy excited state levels (higher energy levels). ). "Metastable" describes nuclei whose excited states have half-lives 100 to 1000 times longer than the half-lives of the excited nuclear states that decay with a "prompt" half life (ordinarily on the order of 10
Homochirality is an obvious characteristic of life on Earth, yet extraterrestrial samples contain largely racemic compounds. [7] It is not known whether homochirality existed before life, whether the building blocks of life must have this particular chirality, or whether life must be homochiral at all.
Example of a biological network between genes and proteins that controls entry into S phase. However, with knowledge of network interactions and a set of parameters for the proteins and protein interactions (usually obtained through empirical research), it is often possible to construct a model of the network as a dynamical system .
The definition of life has long been a challenge for scientists and philosophers. [ 2 ] [ 3 ] [ 4 ] This is partially because life is a process, not a substance. [ 5 ] [ 6 ] [ 7 ] This is complicated by a lack of knowledge of the characteristics of living entities, if any, that may have developed outside Earth.