Emanationism

Emanationism is an idea in the cosmology or cosmogony of certain religious or philosophical systems. Emanation, from the Latin emanare meaning "to flow from" or "to pour forth or out of", is the mode by which all things are derived from the First Reality, or Principle. All things are derived from the first reality or perfect God by steps of degradation to lesser degrees of the first reality or God, and at every step the emanating beings are less pure, less perfect, less divine. Emanationism is a transcendent principle from which everything is derived, and is opposed to both Creationism (wherein the universe is created by a sentient God who is separate from creation) and materialism (which posits no underlying subjective and/or ontological nature behind phenomena being immanent).

Origins

Emanationism is a cosmological theory which asserts that all things "flow" from an underlying principle or reality, usually called the Absolute or Godhead. Any teachings which involve emanation are usually in opposition to creation ex nihilo as emanation advocates that everything has always existed and has not been "created" from nothing.

Emanation (Eastern Orthodox Christianity)

Emanation (literally "dripping") is a belief, found in Neoplatonism, that the cause of certain beings or states of being consists of an overflow from the essence of God or other higher spiritual beings, as opposed to a special act of creation. This overflow is usually conceived in a non-temporal way as a permanent relationship of causation rather than as an event causing an entity to come into existence at a given point in time. The word "emanation" can refer either to the process of emanation or to the thing emanated.

Equivalent concepts are found in Gnosticism and in Kabbalah (Jewish mysticism). This article explores similar concepts in Eastern Orthodoxy and Eastern Catholicism.

Concepts

The Neoplatonic concept of emanation can be compared to the statements made by fourteenth-century Eastern Orthodox theologian Gregory Palamas. He drew a distinction between God's essence and energies, affirming that God was unknowable in His essence, but knowable in His energies.

Radon

Radon is a chemical element with symbol Rn and atomic number 86. It is a radioactive, colorless, odorless, tastelessnoble gas, occurring naturally as a decay product of radium. Its most stable isotope, ²²²Rn, has a half-life of 3.8 days. Radon is one of the densest substances that remains a gas under normal conditions. It is also the only gas under normal conditions that only has radioactive isotopes, and is considered a health hazard due to its radioactivity. Intense radioactivity has also hindered chemical studies of radon and only a few compounds are known.

Radon is formed as one intermediate step in the normal radioactive decay chains through which thorium and uranium slowly decay into lead. Thorium and uranium are the two most common radioactive elements on earth; they have been around since the earth was formed. Their naturally occurring isotopes have very long half-lives, on the order of billions of years. Thorium and uranium, their decay product radium, and its decay product radon, will therefore continue to occur for tens of millions of years at almost the same concentrations as they do now. As radon itself decays, it produces new radioactive elements called radon progeny (formerly called daughters) or decay products. Unlike the gaseous radon itself, radon progeny are solids and stick to surfaces, such as dust particles in the air. If such contaminated dust is inhaled, these particles can stick to the airways of the lung and increase the risk of developing lung cancer.