Blog page 608



                                               

Streaming vibration current

The streaming vibration current and the associated streaming vibration potential is an electric signal that arises when an acoustic wave propagates through a porous body in which the pores are filled with fluid. Streaming vibration current was ex ...

                                               

Surface conductivity

Surface conductivity is an additional conductivity of an electrolyte in the vicinity of the charged interfaces. Surface and volume conductivity of liquids correspond to the electrically driven motion of ions in an electric field. A layer of count ...

                                               

Zeta potential titration

Zeta potential titration is a titration of heterogeneous systems, for example colloids and emulsions. Solids in such systems have very high surface area. This type of titration is used to study the zeta potential of these surfaces under different ...

                                               

Aesthetics of nature

Aesthetics of nature developed as a sub-field of philosophical ethics. In the 18th and 19th century, the aesthetics of nature advanced the concepts of disinterestedness, the pictures, and the introduction of the idea of positive aesthetics. The f ...

                                               

Balance of nature

The balance of nature is a theory that proposes that ecological systems are usually in a stable equilibrium or homeostasis, which is to say that a small change will be corrected by some negative feedback that will bring the parameter back to its ...

                                               

Natural environment

The natural environment encompasses all living and non-living things occurring naturally, meaning in this case not artificial. The term is most often applied to the Earth or some parts of Earth. This environment encompasses the interaction of all ...

                                               

Barnacle Geese Myth

A myth about the origins of the Barnacle goose is that the Barnacle Geese emerge fully formed from the common Barnacle. The migration patterns of may birds including the Barnacle Geese were not fully known until the late 19th or early 20th centur ...

                                               

Nature religion

A nature religion is a religious movement that believes nature and the natural world is an embodiment of divinity, sacredness or spiritual power. Nature religions include indigenous religions practiced in various parts of the world by cultures wh ...

                                               

Patterns in nature

Patterns in nature are visible regularities of form found in the natural world. These patterns recur in different contexts and can sometimes be modelled mathematically. Natural patterns include symmetries, trees, spirals, meanders, waves, foams, ...

                                               

Physis

Physis is a Greek theological, philosophical, and scientific term usually translated into English as "nature". The term is central to Greek philosophy, and as a consequence to Western philosophy as a whole. In pre-Socratic usage, physis was contr ...

                                               

Preternatural

The preternatural or praeternatural is that which appears outside or beside the natural. It is "suspended between the mundane and the miraculous". In theology, the term is often used to distinguish marvels or deceptive trickery, often attributed ...

                                               

Space

Space is the boundless three-dimensional extent in which objects and events have relative position and direction. Physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part ...

                                               

The World We Live In (Life magazine)

The World We Live In appeared in the pages of LIFE magazine from December 8, 1952, to December 20, 1954. A science series, it comprised 13 chapters published on an average of every eight weeks. Written by Lincoln Barnett, The World We Live In spa ...

                                               

Construction history

The history of construction overlaps many other fields like structural engineering and relies on other branches of science like archaeology, history and architecture to investigate how the builders lived and recorded their accomplishments. Those ...

                                               

Accelerating expansion of the universe

The accelerating expansion of the universe is the observation that the expansion of the universe is such that the velocity at which a distant galaxy is receding from the observer is continuously increasing with time. The accelerated expansion was ...

                                               

Age of the universe

In physical cosmology, the age of the universe is the time elapsed since the Big Bang. The current measurement of the age of the universe is around 13.8 billion years – 13.799 ± 0.021 billion years within the Lambda-CDM concordance model. The unc ...

                                               

Big Bang

The Big Bang theory is a cosmological model of the observable universe from the earliest known periods through its subsequent large-scale evolution. The model describes how the universe expanded from an initial state of very high-density and high ...

                                               

Clockwork universe

In the history of science, the clockwork universe compares the universe to a mechanical clock. It continues ticking along, as a perfect machine, with its gears governed by the laws of physics, making every aspect of the machine predictable.

                                               

Cosmic age problem

The cosmic age problem is a historical problem in astronomy concerning the age of the universe. The problem was that at various times in the 20th century, some objects in the universe were estimated to be older than the time elapsed since the Big ...

                                               

Cosmic latte

Cosmic latte is the average color of the universe, found by a team of astronomers from Johns Hopkins University. In 2001, Karl Glazebrook and Ivan Baldry determined that the average color of the universe was a greenish white, but they soon correc ...

                                               

Cosmic time

Cosmic time is the time coordinate commonly used in the Big Bang models of physical cosmology. Such time coordinate may be defined for a homogeneous, expanding universe so that the universe has the same density everywhere at each moment in time. ...

                                               

Cosmogony

Cosmogony and the root of γίνομαι / γέγονα) is any model concerning the origin of either the cosmos or the universe.

                                               

Cosmological horizon

A cosmological horizon is a measure of the distance from which one could possibly retrieve information. This observable constraint is due to various properties of general relativity, the expanding universe, and the physics of Big Bang cosmology. ...

                                               

Location of Earth

Knowledge of the location of Earth has been shaped by 400 years of telescopic observations, and has expanded radically since the start of the 20th century. Initially, Earth was believed to be the center of the Universe, which consisted only of th ...

                                               

Gold universe

A Gold universe is a cosmological model of the universe. In these models, the universe starts with a Big Bang and expands for some time, with increasing entropy and a thermodynamic arrow of time pointing in the direction of the expansion. After t ...

                                               

Graphical timeline from Big Bang to Heat Death

This is the timeline of the Universe from Big Bang to Heat Death scenario. The different eras of the universe are shown. The heat death will occur in 10 100 years, if protons decay. Usually the logarithmic scale is used for such timelines but it ...

                                               

Graphical timeline of the universe

This more than 20-billion-year timeline of our universe shows the best estimates of major events from the universes beginning to anticipated future events. Zero on the scale is the present day. A large step on the scale is one billion years; a sm ...

                                               

Graphical timeline of the Big Bang

This timeline of the Big Bang shows a sequence of events as currently theorized by scientists. It is a logarithmic scale that shows 10 ⋅ log 10 {\displaystyle 10\cdot \log _{10}} second instead of second. For example, one microsecond is 10 ⋅ log ...

                                               

Graphical timeline of the Stelliferous Era

This is the timeline of the stelliferous era but also partly charts the primordial era, and charts more of the degenerate era of the heat death scenario. The scale is 10 × log 10 ⁡ { t } {\displaystyle 10\times \log _{10}\{t\}} where { t } {\disp ...

                                               

Lambda-CDM model

The ΛCDM or Lambda-CDM model is a parametrization of the Big Bang cosmological model in which the universe contains three major components: first, a cosmological constant denoted by Lambda and associated with dark energy; second, the postulated c ...

                                               

Observable universe

The observable universe is a spherical region of the universe comprising all matter that can be observed from Earth or its space-based telescopes and exploratory probes at the present time, because electromagnetic radiation from these objects has ...

                                               

Particle horizon

The particle horizon, or the cosmic light horizon) is the maximum distance from which light from particles could have traveled to the observer in the age of the universe. Much like the concept of a terrestrial horizon, it represents the boundary ...

                                               

Three-torus model of the universe

The three-Torus model is a cosmological model proposed in 1984 by Alexei Starobinsky and Yakov Borisovich Zeldovich at the Landau Institute in Moscow. The theory describes the shape of the universe as a three-dimensional torus.

                                               

Ylem

Ylem is a term that was used by George Gamow, his student Ralph Alpher, and their associates in the late 1940s for a hypothetical original substance or condensed state of matter, which became subatomic particles and elements as we understand them ...

                                               

International broadcasting

International broadcasting is broadcasting that is deliberately aimed at a foreign, rather than a domestic, audience. It usually is broadcast by means of longwave, mediumwave, or shortwave radio, but in recent years has also used direct satellite ...

                                               

List of shortwave radio broadcasters

                                               

Joe Adamov

Joe Adamov, Russian: Иосиф Адамов, was a journalist and presenter on Radio Moscow and its successor, the Voice of Russia, for over sixty years. Of Armenian descent, he was born in Batumi, Georgia. As a child, he lived with his family in England a ...

                                               

Agência Brasil

Agência Brasil is the national public news agency, run by the Brazilian government. It is a part of the public media corporation Empresa Brasil de Comunicação, created in 2007 to unite two government media enterprises Radiobras and TVE. It is pub ...

                                               

Agência Estado

                                               

Association for International Broadcasting

The Association for International Broadcasting - AIB - is the not-for-profit, non-governmental trade association that represents and supports international television and radio broadcasters and online broadcasters. Founded in 1993, the AIB has de ...

                                               

British DX Club

The British DX Club is an association of radio hobbyists and enthusiasts, based in the United Kingdom. It caters for DXers and others with an interest in listening to the short wave, medium wave, long wave and FM radio bands, and studying current ...

                                               

Willis Conover

Willis Clark Conover, Jr. was a jazz producer and broadcaster on the Voice of America for over forty years. He produced jazz concerts at the White House, the Newport Jazz Festival, and for movies and television. By arranging concerts where people ...

                                               

Digital Radio Mondiale

Digital Radio Mondiale is a set of digital audio broadcasting technologies designed to work over the bands currently used for analogue radio broadcasting including AM broadcasting, particularly shortwave, and FM broadcasting. DRM is more spectral ...

                                               

Duga radar

Duga was a Soviet over-the-horizon radar system used as part of the Soviet missile defense early-warning radar network. The system operated from July 1976 to December 1989. Two operational Duga radars were deployed, one near Chernobyl and Chernih ...

                                               

DXing

DXing is the hobby of receiving and identifying distant radio or television signals, or making two-way radio contact with distant stations in amateur radio, citizens band radio or other two-way radio communications. Many DXers also attempt to obt ...

                                               

Eastern Bloc media and propaganda

Eastern Bloc media and propaganda was controlled directly by each countrys Communist party, which controlled the state media, censorship and propaganda organs. State and party ownership of print, television and radio media served as an important ...

                                               

English-language radio

English-language radio refers to radio stations that broadcast primarily in the English language and are located in countries where English is not an official language or majority language. Often referred to as "English-speaking radio" or "Expat ...

                                               

European Broadcasting Area

The European Broadcasting Area is defined by the International Telecommunication Union as such: The "European Broadcasting Area" is bounded on the west by the western boundary of Region 1, on the east by the meridian 40° East of Greenwich and on ...

                                               

The Filipino Channel

The Filipino Channel, commonly known as TFC, is a global subscription television network based in Daly City, California with studio in Redwood City, California and offices in Africa, Australia, Brazil, Canada, Cayman Islands, UAE, Ethiopia, Hunga ...

                                               

The Flattery Show

The Flattery Show was the first English-language radio chat show aired in the south west of France and a flagship Sunday evening programme broadcast on Radio Coteaux in the Gascony region. The show was presented by Irish radio presenter John Slat ...

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Pino - logical board game which is based on tactics and strategy. In general this is a remix of chess, checkers and corners. The game develops imagination, concentration, teaches how to solve tasks, plan their own actions and of course to think logically. It does not matter how much pieces you have, the main thing is how they are placement!

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