Difference between revisions of "Reversible"
(→The Mammalian Brain) |
(→Context) |
||
| Line 3: | Line 3: | ||
==Context== | ==Context== | ||
| + | |||
| + | ===Computations=== | ||
| + | |||
===Physics=== | ===Physics=== | ||
| + | |||
===The Mammalian Brain=== | ===The Mammalian Brain=== | ||
The nerve cell consists of a ''body'' from which originate one or more branches. Each branch is a ''axon'' of the cell. The nerve impulse i a change, propagated at a (normally) fixed speed along each axon. This is most often characterized as an electric disturbance, with a potential of about 50 millivolts for about one millisecond. This change in coincident with a chemical change along the axon. At the termination of the axon the chemical character of the change is more obvious and characteristic substances appear as the pulse arrives. Once the pulse is forwarded, all constituents of the nerve cell reverses to there quiescent state. This may not be the same level of reversibility as is evident above, but it is import in minimizing the total energy consumption of the brain.<ref>John von Nuemann, ''The Computer & the Brain'' Yale Univ Press (1958) ISBN 9780300181111</ref> | The nerve cell consists of a ''body'' from which originate one or more branches. Each branch is a ''axon'' of the cell. The nerve impulse i a change, propagated at a (normally) fixed speed along each axon. This is most often characterized as an electric disturbance, with a potential of about 50 millivolts for about one millisecond. This change in coincident with a chemical change along the axon. At the termination of the axon the chemical character of the change is more obvious and characteristic substances appear as the pulse arrives. Once the pulse is forwarded, all constituents of the nerve cell reverses to there quiescent state. This may not be the same level of reversibility as is evident above, but it is import in minimizing the total energy consumption of the brain.<ref>John von Nuemann, ''The Computer & the Brain'' Yale Univ Press (1958) ISBN 9780300181111</ref> | ||
| − | |||
===Society=== | ===Society=== | ||
Revision as of 21:45, 24 May 2023
Contents
Full Title or Meme
There are many examples in nature and in society where we would like to run things backwards or do things differently.
Context
Computations
Physics
The Mammalian Brain
The nerve cell consists of a body from which originate one or more branches. Each branch is a axon of the cell. The nerve impulse i a change, propagated at a (normally) fixed speed along each axon. This is most often characterized as an electric disturbance, with a potential of about 50 millivolts for about one millisecond. This change in coincident with a chemical change along the axon. At the termination of the axon the chemical character of the change is more obvious and characteristic substances appear as the pulse arrives. Once the pulse is forwarded, all constituents of the nerve cell reverses to there quiescent state. This may not be the same level of reversibility as is evident above, but it is import in minimizing the total energy consumption of the brain.[1]
Society
Nostalgia is a powerful emotion that all humans are effected by from time to time. However, there are periods where a desire to reverse the clock to a more "natural" or "normal" time overwhelms rational thought. Taken to the extreme the back-to-nature effort seems to cause us to forget all of the advances that have made the human plight more enjoyable.
Others
References
- ↑ John von Nuemann, The Computer & the Brain Yale Univ Press (1958) ISBN 9780300181111
