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Bookmark or Share- Is information entropy the same as thermodynamic entropy?By far the most abused word in science is "entropy". Confusion over the different meanings of this word, already serious 35 years ago, reached disaster proportions with the 1948 advent of Shannon's information theory, which not only appropriated the same word for a new set of meanings; but even worse, proved to be highly relevant to statistical ...
- Physics Forums: Science Discussion, Homework Help, ArticlesPhysics Forums aims to provide a community for students, scientists, educators or hobbyists to learn and discuss science as it is currently generally understood and practiced by the professional scientific community. STEM homework help for students is available, as well as academic and career guidance. Join Physics Forums, where students ...
- How does light, which is an electromagnetic wave, carry information?The wavelength of the light reaching you is carrying information. Light from objects are also "doppler shifted" : the police use this effect to get the information - the speed of the car that they shine the radar gun on. The frequency is actually changed in this process. This frequency change is carrying information.
- Why is information indestructible? - Physics Stack ExchangeHowever, Susskind's claim is quite the opposite. How does one understand the loss of information by an entropy increasing process, and its connection to the statement “information is indestructible”. Black hole physics can be used in answers, but, as he proposes a general law of physics, I would prefer an answer not involving black holes.
- How is information related to energy in physics?3. Energy is the relationship between information regimes. That is, energy is manifested, at any level, between structures, processes and systems of information in all of its forms, and all entities in this universe is composed of information. To understand information and energy, consider a hypothetical universe consisting only of nothingness.
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