A universal resolution limit: 'The lower bound on the energy for bounded systems is equivalent to the Bekenstein upper bound on the entropy to energy ration for bounded systems

GRIN Verlag
Free sample

Scientific Essay from the year 2009 in the subject Physics - Theoretical Physics, Technical University of Berlin, language: English, abstract: Several approaches can be used to proof the assumption that an universal upper bound on the entropy to energy ratio (S/E) exists in bounded systems. In 1981 Jacob D. Bekenstein published his findings that S/E is limited by the “effective radius” of the system and mentioned various approaches to derive S/E employing quantum statistics or thermodynamics. It can be shown that similar results are obtained considering the energetic difference of longitudinal eigenmodes inside a closed cavity like it was done by Max Planck in 1900 to derive the correct formula for the spectral distribution of the black-body radiation. Considering an information theoretical approach this derivation suggests that the variance of an expectation value DO is the same like a variance of the probability D

for measuring O : DO = D

* O . Implications of these findings are shortly discussed.

Read more

Reviews

Loading...

Additional Information

Publisher
GRIN Verlag
Read more
Published on
Nov 26, 2010
Read more
Pages
4
Read more
ISBN
9783640761920
Read more
Read more
Best For
Read more
Language
English
Read more
Genres
Science / Physics / General
Read more
Content Protection
This content is DRM protected.
Read more
Eligible for Family Library

Reading information

Smartphones and Tablets

Install the Google Play Books app for Android and iPad/iPhone. It syncs automatically with your account and allows you to read online or offline wherever you are.

Laptops and Computers

You can read books purchased on Google Play using your computer's web browser.

eReaders and other devices

To read on e-ink devices like the Sony eReader or Barnes & Noble Nook, you'll need to download a file and transfer it to your device. Please follow the detailed Help center instructions to transfer the files to supported eReaders.
Franz-Josef Schmitt
Photosynthesis and the complex network within plants is becoming more important than ever, because of the earth’s changing climate. In addition, the concepts can be used in other areas, and the science itself is useful in practical applications in many branches of science, including medicine, biology, biophysics, and chemistry. This original, groundbreaking work by two highly experienced and well-known scientists introduces a new and different approach to thinking about living organisms, what we can learn from them, and how we can use the concepts within their scientific makeup in practice.

This book describes the principles of complex signaling networks enabling spatiotemporally-directed macroscopic processes by the coupling of systems leading to a bottom-up information transfer in photosynthetic organisms. Top-down messengers triggered by macroscopic actuators like sunlight, gravity, environment or stress lead to an activation of the gene regulation on the molecular level. Mainly the generation and monitoring, as well the role of reactive oxygen species in photosynthetic organisms as typical messengers in complex networks, are described. A theoretical approach according to the principle of synergetics is presented to model light absorption, electron transfer and membrane dynamics in plants. A special focus will be attended to nonlinear processes that form the basic principle for the accumulation of energy reservoirs and large forces enabling the dynamics of macroscopic devices.

This volume is a must-have for any scientist, student, or engineer working with photosynthesis. The concepts herein are not available anywhere else, in any other format, and it is truly a groundbreaking work with sure to be long-lasting effects on the scientific community.

Franz-Josef Schmitt
Photosynthesis and the complex network within plants is becoming more important than ever, because of the earth’s changing climate. In addition, the concepts can be used in other areas, and the science itself is useful in practical applications in many branches of science, including medicine, biology, biophysics, and chemistry. This original, groundbreaking work by two highly experienced and well-known scientists introduces a new and different approach to thinking about living organisms, what we can learn from them, and how we can use the concepts within their scientific makeup in practice.

This book describes the principles of complex signaling networks enabling spatiotemporally-directed macroscopic processes by the coupling of systems leading to a bottom-up information transfer in photosynthetic organisms. Top-down messengers triggered by macroscopic actuators like sunlight, gravity, environment or stress lead to an activation of the gene regulation on the molecular level. Mainly the generation and monitoring, as well the role of reactive oxygen species in photosynthetic organisms as typical messengers in complex networks, are described. A theoretical approach according to the principle of synergetics is presented to model light absorption, electron transfer and membrane dynamics in plants. A special focus will be attended to nonlinear processes that form the basic principle for the accumulation of energy reservoirs and large forces enabling the dynamics of macroscopic devices.

This volume is a must-have for any scientist, student, or engineer working with photosynthesis. The concepts herein are not available anywhere else, in any other format, and it is truly a groundbreaking work with sure to be long-lasting effects on the scientific community.

Sean Carroll
*INSTANT NEW YORK TIMES BESTSELLER*
"Vivid . . . impressive. . . . Splendidly informative."—The New York Times
"Succeeds spectacularly."—Science
"A tour de force."—Salon

Already internationally acclaimed for his elegant, lucid writing on the most challenging notions in modern physics, Sean Carroll is emerging as one of the greatest humanist thinkers of his generation as he brings his extraordinary intellect to bear not only on Higgs bosons and extra dimensions but now also on our deepest personal questions: Where are we? Who are we? Are our emotions, our beliefs, and our hopes and dreams ultimately meaningless out there in the void? Do human purpose and meaning fit into a scientific worldview?

In short chapters filled with intriguing historical anecdotes, personal asides, and rigorous exposition, readers learn the difference between how the world works at the quantum level, the cosmic level, and the human level—and then how each connects to the other. Carroll's presentation of the principles that have guided the scientific revolution from Darwin and Einstein to the origins of life, consciousness, and the universe is dazzlingly unique.  

Carroll shows how an avalanche of discoveries in the past few hundred years has changed our world and what really matters to us. Our lives are dwarfed like never before by the immensity of space and time, but they are redeemed by our capacity to comprehend it and give it meaning.

The Big Picture is an unprecedented scientific worldview, a tour de force that will sit on shelves alongside the works of Stephen Hawking, Carl Sagan, Daniel Dennett, and E. O. Wilson for years to come.
Franz-Josef Schmitt
Photosynthesis and the complex network within plants is becoming more important than ever, because of the earth’s changing climate. In addition, the concepts can be used in other areas, and the science itself is useful in practical applications in many branches of science, including medicine, biology, biophysics, and chemistry. This original, groundbreaking work by two highly experienced and well-known scientists introduces a new and different approach to thinking about living organisms, what we can learn from them, and how we can use the concepts within their scientific makeup in practice.

This book describes the principles of complex signaling networks enabling spatiotemporally-directed macroscopic processes by the coupling of systems leading to a bottom-up information transfer in photosynthetic organisms. Top-down messengers triggered by macroscopic actuators like sunlight, gravity, environment or stress lead to an activation of the gene regulation on the molecular level. Mainly the generation and monitoring, as well the role of reactive oxygen species in photosynthetic organisms as typical messengers in complex networks, are described. A theoretical approach according to the principle of synergetics is presented to model light absorption, electron transfer and membrane dynamics in plants. A special focus will be attended to nonlinear processes that form the basic principle for the accumulation of energy reservoirs and large forces enabling the dynamics of macroscopic devices.

This volume is a must-have for any scientist, student, or engineer working with photosynthesis. The concepts herein are not available anywhere else, in any other format, and it is truly a groundbreaking work with sure to be long-lasting effects on the scientific community.

Franz-Josef Schmitt
Photosynthesis and the complex network within plants is becoming more important than ever, because of the earth’s changing climate. In addition, the concepts can be used in other areas, and the science itself is useful in practical applications in many branches of science, including medicine, biology, biophysics, and chemistry. This original, groundbreaking work by two highly experienced and well-known scientists introduces a new and different approach to thinking about living organisms, what we can learn from them, and how we can use the concepts within their scientific makeup in practice.

This book describes the principles of complex signaling networks enabling spatiotemporally-directed macroscopic processes by the coupling of systems leading to a bottom-up information transfer in photosynthetic organisms. Top-down messengers triggered by macroscopic actuators like sunlight, gravity, environment or stress lead to an activation of the gene regulation on the molecular level. Mainly the generation and monitoring, as well the role of reactive oxygen species in photosynthetic organisms as typical messengers in complex networks, are described. A theoretical approach according to the principle of synergetics is presented to model light absorption, electron transfer and membrane dynamics in plants. A special focus will be attended to nonlinear processes that form the basic principle for the accumulation of energy reservoirs and large forces enabling the dynamics of macroscopic devices.

This volume is a must-have for any scientist, student, or engineer working with photosynthesis. The concepts herein are not available anywhere else, in any other format, and it is truly a groundbreaking work with sure to be long-lasting effects on the scientific community.

Franz-Josef Schmitt
Diplomarbeit aus dem Jahr 2005 im Fachbereich Physik - Optik, Note: 1.0, Technische Universität Berlin, Sprache: Deutsch, Abstract: Im Rahmen dieser Arbeit wurde die Fluoreszenzdynamik in ganzen Zellen von Acaryochloris marina (A.marina) durch Anregung mittels verschiedener gepulster Lichtquellen mit unterschiedlichen Anregungswellenlängen bei physiologischen und kryostatischen Temperaturen untersucht. A.marina ist ein erst 1996 entdecktes Cyanobakterium, welches wegen einer bisher einzigartigen molekularen Zusammensetzung des lichtsammelnden Antennensystems wissenschaftlich sehr interessant ist. Während höhere Pflanzen und andere Cyanobakterien überwiegend Chlorophyll a und b als Hauptpigmente des membraninternen Lichtsammelkomplexes (LHC) aufweisen, enthält der LHC von A.marina fast ausschließlich Chl d. Bei Chl d ist die langwellige Absorptionsbande im Vergleich zu Chl a und Chl b um mehr als 30 nm rotverschoben. Dies ermöglicht A.marina, den nahen Infrarotbereich des Sonnenlichtes zur Photosynthese zu nutzen und auf engem Raum symbiontisch mit anderen Cyanobakterien zusammenzuleben. Auch die membranexterne Phycobiliproteinantenne (PBP Antenne) von A. marina hat einen anderen Aufbau als in typischen Cyanobakterien. Aus dem energetisch niedrigeren Anregungszustand des Chl d und der Struktur der LHC- und PBP Antenne ergeben sich wesentliche Fragen zum Anregungsenergietransfer in A.marina. Aus der Analyse der Fluoreszenzdynamik bei physiologischen Temperaturen konnte auf die Dynamik der Exzitonen im Antennensystem rückgeschlossen werden. Dazu wurden die gewonnenen Messdaten mit Hilfe eines Kompartimentierungsmodells analysiert und iterativ mit den Messdaten abgeglichen. Dies ermöglichte die quantitative Erfassung der auftretenden Exzitonen- und Elektronentransferzeiten. Es zeigte sich insbesondere, dass der Transfer vom terminalen Ende der PBP Antenne in die Chl dhaltige Core-Antenne mit einer Zeitkonstanten von 60 ps abläuft und damit schneller ist, als bei anderen Cyanobakterien. Durch eine Simulation konnte gezeigt werden, dass die Zeitkonstante einer schnellen Fluoreszenzkomponente an der Grenze des Auflösungsvermögens verkürzt wiedergegeben wird. Eine Abschätzung des räumlichen Abstands zwischen den nächsten Nachbarn der Pigmente der PBP Antenne und des Chl d-haltigen LHC aus den gemessenen Spektren mit Hilfe der Theorie des Förster-Resonanz-Energie-Transfers (FRET) unter der Annahme gekoppelter Dipole, ergab einen centercenter Abstand von 3,3 nm
©2018 GoogleSite Terms of ServicePrivacyDevelopersArtistsAbout Google
By purchasing this item, you are transacting with Google Payments and agreeing to the Google Payments Terms of Service and Privacy Notice.