Light - Early Greek ideas - Article Index

Encyclopedia - Light: Encyclopedia Ii - Light - Theories About Light
Light - Early Greek ideas. In 55 BC Lucretius, continuing the ideas of earlier atomists, wrote that light and heat from the Sun were co...   » Read the article

Encyclopedia - Light: Encyclopedia Ii - Light - Theories About Light
Light - Early Greek ideas. In 55 BC Lucretius, continuing the ideas of earlier atomists, wrote that light and heat from the Sun were co...   » Read the article

Encyclopedia - Light: Encyclopedia Ii - Light - Measurement Of Light
The following quantities and units are used to measure the quantity or "brightness" of light. edit edit Sometimes confusingly called "in...   » Read the article

Encyclopedia - Light: Encyclopedia - Light
Light is electromagnetic radiation with a wavelength that is visible to the eye (visible light) or, in a technical or scientific context,...   » Read the article

Dictionary - Devil: Spiritual - Theosophy Dictionary On Devil
Devil (from Greek diabolos slanderer, adversary; cf Italian diavolo, French diable)   The Devil of the New Testament and Christia...   » Read the article

Dictionary - Pentateuch: Spiritual - Theosophy Dictionary On Pentateuch
Pentateuch [from Greek pente five + teuchos books]   A work in five books; the first five books of the Bible, containing stories ...   » Read the article

Dictionary - Gnosticism: New Age Spirituality Dictionary On Gnosticism
Gnosticism (from Gk. gnosis, "knowledge") A pre- Christian category of religions which emphasizes that a personal experience...   » Read the article

Dictionary - Gnosticism: New Age Spirituality Dictionary On Gnosticism
Gnosticism (from Gk. gnosis, "knowledge") A pre- Christian category of religions which emphasizes that a personal experience...   » Read the article

Dictionary - Woman: Spiritual - Theosophy Dictionary On Woman
Woman In philosophy, symbolizes the mother aspect of nature or feminine characteristic of the universe always found in the triads of F...   » Read the article

Dictionary - Soma: Spiritual - Theosophy Dictionary On Soma
Soma (Sanskrit) In Hinduism, the moon astronomically; mystically, a sacred beverage of initiates, "made from a rare mountain plan...   » Read the article

Dictionary - Principles: Spiritual - Theosophy Dictionary On Principles
Principles A beginning, foundation, source, or essence from which things proceed; principles are thus the fundamental essences out of ...   » Read the article

Encyclopedia - Light: Encyclopedia Ii - Light - Speed Of Light
Although some people speak of the "velocity of light", the word velocity should be reserved for vector quantities, that is, those with bo...   » Read the article

Encyclopedia - Light: Encyclopedia Ii - Light - Refraction
All light propagates at a finite speed. Even moving observers always measure the same value of c, the speed of light in vacuum, as c = 29...   » Read the article

Encyclopedia - Light: Encyclopedia Ii - Light - Light Sources
There are many sources of light. The most common light sources are thermal: a body at a given temperature emits a characteristic spectrum...   » Read the article

Encyclopedia - Light: Encyclopedia Ii - Light - Visible Electromagnetic Radiation
Visible light is the portion of the electromagnetic spectrum between the frequencies of 380 THz (3.8×1014 hertz) and 750 ...   » Read the article

Encyclopedia - Light: Encyclopedia Ii - Light - Color And Wavelengths
The different wavelengths are detected by the human eye and then interpreted by the brain as colors, ranging from red at the longest wave...   » Read the article