1. Past sounds

2015 ◽  
pp. 1-9
Author(s):  
Mike Goldsmith
Keyword(s):  
Low Frequency ◽  
Big Bang ◽  
Sound Waves ◽  
Very Low Frequency ◽  
Living Things ◽  
The World ◽  
Sonar Systems ◽  
History Of ◽  
Hearing Evolution ◽  
The Big Bang

‘Past sounds’ provides a history of sound from the origin of sound waves 300,000 years after the Big Bang to the modern day of ultrasound and electroacoustic technology. Primordial sound was of a very low frequency, but powerful and omnipresent, and the environment in which the first living things evolved was an acoustically rich one, profoundly affecting the forms, habits, and destinies of those creatures. Hearing evolution is described along with the human development of music and musical instruments. The Greeks built amphitheatres that dealt with the practicalities of sound and Pythagoras studied harmony on a monochord. The World Wars of the twentieth century accelerated electronics development and inspired underwater acoustic research and sonar systems.

scholarly journals Why anything rather than nothing? The answer of quantum mechanics

2020 ◽  
Author(s):  
Vasil Dinev Penchev
Keyword(s):  
Quantum Mechanics ◽  
Free Will ◽  
Big Bang ◽  
Mathematical Truth ◽  
The Bible ◽  
Philosophical Interpretation ◽  
The World ◽  
The Creation ◽  
The Big Bang ◽  
In Virtue Of

Many researchers determine the question “Why anything rather than nothing?” as the most ancient and fundamental philosophical problem. Furthermore, it is very close to the idea of Creation shared by religion, science, and philosophy, e.g. as the “Big Bang”, the doctrine of “first cause” or “causa sui”, the Creation in six days in the Bible, etc.Thus, the solution of quantum mechanics, being scientific in fact, can be interpreted also philosophically, and even religiously. However, only the philosophical interpretation is the topic of the text.The essence of the answer of quantum mechanics is:1. The creation is necessary in a rigorous mathematical sense. Thus, it does not need any choice, free will, subject, God, etc. to appear. The world exists in virtue of mathematical necessity, e.g. as any mathematical truth such as 2+2=4.2. The being is less than nothing rather than more than nothing. So, the creation is not an increase of nothing, but the decrease of nothing: it is a deficiency in relation of nothing. Time and its “arrow” are the way of that diminishing or incompleteness to nothing.

scholarly journals From cosmos to intelligent life: the four ages of astrobiology

2012 ◽  
Vol 11 (4) ◽  
pp. 345-350 ◽  
Author(s):  
Marcelo Gleiser
Keyword(s):  
Chemical Elements ◽  
Life Forms ◽  
Big Bang ◽  
Self Awareness ◽  
First Stars ◽  
History Of ◽  
Life On Earth ◽  
The Big Bang ◽  
The Universe ◽  
Intelligent Life

AbstractThe history of life on Earth and in other potential life-bearing planetary platforms is deeply linked to the history of the Universe. Since life, as we know, relies on chemical elements forged in dying heavy stars, the Universe needs to be old enough for stars to form and evolve. The current cosmological theory indicates that the Universe is 13.7 ± 0.13 billion years old and that the first stars formed hundreds of millions of years after the Big Bang. At least some stars formed with stable planetary systems wherein a set of biochemical reactions leading to life could have taken place. In this paper, I argue that we can divide cosmological history into four ages, from the Big Bang to intelligent life. The physical age describes the origin of the Universe, of matter, of cosmic nucleosynthesis, as well as the formation of the first stars and Galaxies. The chemical age began when heavy stars provided the raw ingredients for life through stellar nucleosynthesis and describes how heavier chemical elements collected in nascent planets and Moons gave rise to prebiotic biomolecules. The biological age describes the origin of early life, its evolution through Darwinian natural selection and the emergence of complex multicellular life forms. Finally, the cognitive age describes how complex life evolved into intelligent life capable of self-awareness and of developing technology through the directed manipulation of energy and materials. I conclude discussing whether we are the rule or the exception.

scholarly journals Repackaging Popular Culture: Commentary and Critique in Community

2012 ◽  
Vol 5 (2) ◽  
Author(s):  
Tully Barnett ◽  
Ben Kooyman
Keyword(s):  
Popular Culture ◽  
Science Fiction ◽  
Everyday Life ◽  
Pop Culture ◽  
Big Bang ◽  
Fan Culture ◽  
High Stakes ◽  
History Of ◽  
Nerd Culture ◽  
The Big Bang

Contemporaneous with the collision of Science Fiction/Fantasy with the mainstream evident in the success of nerd culture show The Big Bang Theory (2007- ), Joss Whedon’s The Avengers (2012), the growth of Comic Con audiences and so on, Dan Harmon developed Community (2009- ), a sitcom depicting a study group at a second-rate community college. The show exemplifies a recent gravitation away from the multi-camera, laugh-track driven sitcom formula, alternating between “straight” episodes dealing with traditional sitcom premises, though always inflected with self-aware acumen, and more ambitious, unconventional episodes featuring outlandish premises, often infused with the trappings of genre and geek fandom. The show presents apocalyptic action- and Western-style paintball wars, epidemics that evoke zombie cinema, a Yahtzee game that spirals into alternate timelines, and a high-stakes Dungeons and Dragons game that blurs the boundaries between reality and fantasy.  Both the straight and the unconventional episodes ultimately serve the same purpose, examining the intersection between nerd culture and everyday life. This essay discusses a number of episodes which exemplify Community’s intersections between everyday life and popular culture, charting the show’s evolving preoccupation with pop culture and intertwining of reality and fantasy. It discusses Community’s self-referentiality as a sitcom, its ambitious and elaborate recreations of and homages to pop culture artefacts, and its explicit gravitation towards Science Fiction and Telefantasy in its third season. Through its various homages to popular culture and ongoing depiction of fan culture, we posit that the show is both a work of fandom and a work about fandom, advocating for the pivotal role of fandom in everyday life and for popular culture as a tool for interpreting, comprehending and navigating life. In this respect, the show contributes to the long history of both the sitcom and Telefantasy as vehicles for cultural commentary.

scholarly journals Quasi-Steady State Cosmology

1994 ◽  
Vol 159 ◽  
pp. 293-299
Author(s):  
G. Burbidge ◽  
F. Hoyle ◽  
J.V. Narlikar
Keyword(s):  
Steady State ◽  
Early Universe ◽  
Particle Physics ◽  
Physical Theory ◽  
Big Bang ◽  
Quasi Steady State ◽  
Recent Developments ◽  
History Of ◽  
The Big Bang ◽  
The Universe

The standard big bang cosmology has the universe created out of a primeval explosion that not only created matter and radiation but also spacetime itself. The big bang event itself cannot be discussed within the framework of a physical theory but the events following it are in principle considered within the scope of science. The recent developments on the frontier between particle physics and cosmology highlight the attempts to chart the history of the very early universe.

A THEORY OF SPACE, TIME AND MATTER

1996 ◽  
Vol 11 (18) ◽  
pp. 3247-3255 ◽  
Author(s):  
P.S. WESSON ◽  
J. PONCE DE LEON ◽  
H. LIU ◽  
B. MASHHOON ◽  
D. KALLIGAS ◽  
...  
Keyword(s):  
Gravitational Field ◽  
Extra Dimension ◽  
Big Bang ◽  
Space Time ◽  
Cosmological Models ◽  
The World ◽  
New Type ◽  
The Big Bang ◽  
Insight Into ◽  
Classical Tests Of Relativity

We unify the gravitational field with its source by considering a new type of 5D manifold in which space and time are augmented by an extra dimension which induces 4D matter. The classical tests of relativity are satisfied, and for solitons we obtain new effects which can be tested astrophysically. The canonical cosmological models are in agreement with observations, and we gain new insight into the nature of the big bang. Our inference is that the world may be pure geometry in 5D.

Extremely low frequency detection of electrical discharges at Minamidake crater (Sakurajima volcano, Japan)

2020 ◽  
Author(s):  
Caron E.J. Vossen ◽  
Corrado Cimarelli ◽  
Alec J. Bennett ◽  
André Geisler ◽  
Damien Gaudin ◽  
...  
Keyword(s):  
Low Frequency ◽  
Japan Meteorological Agency ◽  
Frequency Range ◽  
Electrical Discharges ◽  
Very Low Frequency ◽  
Extremely Low Frequency ◽  
Sakurajima Volcano ◽  
Frequency Detection ◽  
The World ◽  
Active Volcanoes

<p>Volcanoes are increasingly better monitored around the world. Nonetheless, the detection and monitoring of volcanic ash plumes remains difficult, especially in remote areas. Intense electrical activity and lightning in volcanic plumes suggests that electrical monitoring of active volcanoes can aid the detection of ash emissions in near real-time. Current very low frequency and wide-band thunderstorm networks have proven to be able to detect plumes of large magnitude. However, the time delay and the relatively high number of non-detected explosive episodes show that the applicability of these systems to the detection of smaller (and often more frequent) ash-rich explosive events is limited. Here we use a different type of thunderstorm detector to observe electrical discharges generated by the persistent Vulcanian activity of Minamidake crater at Sakurajima volcano in Japan. The sensors consist of two antennas that measure the induced current due to the change in electric field with time. In contrast to the current thunderstorm networks, these sensors measure within the extremely low frequency range (1-45 Hz) and can detect lightning up to 35 kilometres distance.</p><p>Two detectors were installed at a distance of 3 and 4 kilometres from Minamidake crater and recorded almost continuously since July 2018. Within this period, the ash plumes reached a maximum height of 5.5 kilometres above the crater rim. Using a volcanic lightning detection algorithm and the catalogue of volcanic explosions compiled by the Japan Meteorological Agency (JMA), the number of electrical discharges was determined for each individual explosive event. In addition, the start of electrical discharges was compared to the eruption onset estimated by the JMA.</p><p>Preliminary results show that the detector closest to the crater had the highest detection efficiency. It detected electrical discharges during 60% of the eruptions listed by the JMA. This is significantly higher than for the World Wide Lightning Location Network, which detected electrical discharges (in the very low frequency range) within 20 kilometres of Sakurajima for less than 0.005% of the eruptions. Furthermore, the results show that for 40% of the detected eruptions, electrical discharges were detected before the estimated JMA timing. Hence, electrical discharges can mark the inception of the explosion with a higher precision and are an indication of ash emission. This demonstrates the value of the cost-effective sensors used here as a monitoring tool at active volcanoes.</p>

Periodization

2012 ◽  
Author(s):  
Luigi Cajani
Keyword(s):  
World War Ii ◽  
World History ◽  
Big Bang ◽  
Human Beings ◽  
Human History ◽  
Creation Myths ◽  
Current Trends ◽  
The Enlightenment ◽  
History Of ◽  
The Big Bang

This article presents an overview of the different periodizations of world history. It discusses first world histories that originated as part and parcel of religious visions which connect Creation myths and human history; Greek and Roman historiography; the Christian synthesis of salvation; medieval European historiography of the Six Ages and the Four Empires; Muslim historiography; the European discovery of new histories; the challenges against biblical chronology; Voltaire and the Enlightenment; German Aufklärung; Eurocentrism during the nineteenth century; Marxist historiography; UNESCO's world history after World War II; and current trends. The discussion ends with the big history, which places human history within the wider framework of the history of the universe, thus starting with the Big Bang and going through the formation of the galaxies, the solar system, planet Earth, and the geological eras until the evolution of human beings, and down to the present day.

scholarly journals QUARK MATTER AND NUCLEAR COLLISIONS A BRIEF HISTORY OF STRONG INTERACTION THERMODYNAMICS

2012 ◽  
Vol 21 (08) ◽  
pp. 1230006 ◽  
Author(s):  
HELMUT SATZ
Keyword(s):  
High Energy ◽  
Big Bang ◽  
Nuclear Collision ◽  
Strong Interactions ◽  
Extreme Temperatures ◽  
Nuclear Collisions ◽  
The Past ◽  
History Of ◽  
The Big Bang ◽  
Theory And Experiment

The past 50 years have seen the emergence of a new field of research in physics, the study of matter at extreme temperatures and densities. The theory of strong interactions, quantum chromodynamics (QCD), predicts that in this limit, matter will become a plasma of deconfined quarks and gluons — the medium which made up the early universe in the first 10 microseconds after the Big Bang. High energy nuclear collisions are expected to produce short-lived bubbles of such a medium in the laboratory. I survey the merger of statistical QCD and nuclear collision studies for the analysis of strongly interacting matter in theory and experiment.

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