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Geomantic Figures
The 16 geomantic figures are the primary symbols used in divinatory geomancy. Each geomantic figure represents a certain formed state of the world or the mind and can be interpreted in various ways based upon the query put forth and the method used to generate the figures. When geomancy was introduced to Europe in the Middle Ages, the figures acquired astrological meanings and new forms of interpretation. The figures bear superficial resemblance to the ba gua, the eight trigrams used in the ''I Ching'', a Chinese classic text. Properties of the figures Each of the figures is composed of four lines, each line containing either one or two points. Each line represents one of the four classical elements: from top to bottom, the lines represent fire, air, water, and earth. When a line has a single point, the element is said to be active; otherwise, with two points, the element is passive. Because there are four lines, and since each line can be either active or passive, there are 24 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geomantic Figures
The 16 geomantic figures are the primary symbols used in divinatory geomancy. Each geomantic figure represents a certain formed state of the world or the mind and can be interpreted in various ways based upon the query put forth and the method used to generate the figures. When geomancy was introduced to Europe in the Middle Ages, the figures acquired astrological meanings and new forms of interpretation. The figures bear superficial resemblance to the ba gua, the eight trigrams used in the ''I Ching'', a Chinese classic text. Properties of the figures Each of the figures is composed of four lines, each line containing either one or two points. Each line represents one of the four classical elements: from top to bottom, the lines represent fire, air, water, and earth. When a line has a single point, the element is said to be active; otherwise, with two points, the element is passive. Because there are four lines, and since each line can be either active or passive, there are 24 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lunar Nodes
A lunar node is either of the two orbital nodes of the Moon, that is, the two points at which the orbit of the Moon intersection (Euclidean geometry), intersects the ecliptic. The ''ascending'' (or ''north'') node is where the Moon moves into the northern ecliptic coordinate system, ecliptic hemisphere, while the ''descending'' (or ''south'') node is where the Moon enters the southern ecliptic hemisphere. Eclipses A lunar eclipse can occur only when the full moon, full Moon is near either lunar node (within 11° 38' ecliptic longitude), while a solar eclipse can occur only when the new moon, new Moon is near either lunar node (within 17° 25'). Both solar eclipses of July 2000 (on the solar eclipse of July 1, 2000, 1st and solar eclipse of July 31, 2000, 31st days) occurred around the time when the Moon was at its ascending node. Ascending-node eclipses recur after one draconic year on average, which is about 0.94901 Gregorian year, as do descending-node eclipses. Precession B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logical Negation
In logic, negation, also called the logical complement, is an operation that takes a proposition P to another proposition "not P", written \neg P, \mathord P or \overline. It is interpreted intuitively as being true when P is false, and false when P is true. Negation is thus a unary logical connective. It may be applied as an operation on notions, propositions, truth values, or semantic values more generally. In classical logic, negation is normally identified with the truth function that takes ''truth'' to ''falsity'' (and vice versa). In intuitionistic logic, according to the Brouwer–Heyting–Kolmogorov interpretation, the negation of a proposition P is the proposition whose proofs are the refutations of P. Definition ''Classical negation'' is an operation on one logical value, typically the value of a proposition, that produces a value of ''true'' when its operand is false, and a value of ''false'' when its operand is true. Thus if statement is true, then \neg P (pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exclusive Or
Exclusive or or exclusive disjunction is a logical operation that is true if and only if its arguments differ (one is true, the other is false). It is symbolized by the prefix operator J and by the infix operators XOR ( or ), EOR, EXOR, , , , , , and . The negation of XOR is the logical biconditional, which yields true if and only if the two inputs are the same. It gains the name "exclusive or" because the meaning of "or" is ambiguous when both operands are true; the exclusive or operator ''excludes'' that case. This is sometimes thought of as "one or the other but not both". This could be written as "A or B, but not, A and B". Since it is associative, it may be considered to be an ''n''-ary operator which is true if and only if an odd number of arguments are true. That is, ''a'' XOR ''b'' XOR ... may be treated as XOR(''a'',''b'',...). Truth table The truth table of A XOR B shows that it outputs true whenever the inputs differ: Equivalences, elimination, and introduc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Binary Numeral System
A binary number is a number expressed in the base-2 numeral system or binary numeral system, a method of mathematical expression which uses only two symbols: typically "0" (zero) and "1" ( one). The base-2 numeral system is a positional notation with a radix of 2. Each digit is referred to as a bit, or binary digit. Because of its straightforward implementation in digital electronic circuitry using logic gates, the binary system is used by almost all modern computers and computer-based devices, as a preferred system of use, over various other human techniques of communication, because of the simplicity of the language and the noise immunity in physical implementation. History The modern binary number system was studied in Europe in the 16th and 17th centuries by Thomas Harriot, Juan Caramuel y Lobkowitz, and Gottfried Leibniz. However, systems related to binary numbers have appeared earlier in multiple cultures including ancient Egypt, China, and India. Leibniz was specifica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planetary Hours
The planetary hours are an ancient system in which one of the seven classical planets is given rulership over each day and various parts of the day. Developed in Hellenistic astrology, it has possible roots in older Babylonian astrology, and it is the origin of the names of the days of the week as used in English and numerous other languages. The classical planets are Saturn, Jupiter, Mars, Sun, the Sun, Venus, Mercury (planet), Mercury and Moon, the Moon, and they take rulership over the hours in this sequence. The sequence is from slowest- to fastest-moving as the planets appear in the night sky, and so is from furthest to nearest in the planetary spheres model. This order has come to be known as the "Chaldean order". As each day is divided into 24 hours, the first hour of a day is ruled by the planet three places down in the Chaldean order from the planet ruling the first hour of the preceding day; i.e. a day with its first hour ruled by the Sun ("Sunday") is followed by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apparent Retrograde Motion
Apparent retrograde motion is the apparent motion of a planet in a direction opposite to that of other bodies within its system, as observed from a particular vantage point. Direct motion or prograde motion is motion in the same direction as other bodies. While the terms ''direct'' and ''prograde'' are equivalent in this context, the former is the traditional term in astronomy. The earliest recorded use of ''prograde'' was in the early 18th century, although the term is now less common. Etymology The term ''retrograde'' is from the Latin word – "backward-step", the affix meaning "backwards" and "step". ''Retrograde'' is most commonly an adjective used to describe the path of a planet as it travels through the night sky, with respect to the zodiac, stars, and other bodies of the celestial canopy. In this context, the term refers to planets, as they appear from Earth, stopping briefly and reversing direction at certain times, though in reality, of course, we now understa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Declination
In astronomy, declination (abbreviated dec; symbol ''δ'') is one of the two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle. Declination's angle is measured north or south of the celestial equator, along the hour circle passing through the point in question. The root of the word ''declination'' (Latin, ''declinatio'') means "a bending away" or "a bending down". It comes from the same root as the words ''incline'' ("bend foward") and ''recline'' ("bend backward"). In some 18th and 19th century astronomical texts, declination is given as ''North Pole Distance'' (N.P.D.), which is equivalent to 90 – (declination). For instance an object marked as declination −5 would have an N.P.D. of 95, and a declination of −90 (the south celestial pole) would have an N.P.D. of 180. Explanation Declination in astronomy is comparable to geographic latitude, projected onto the celestial sphere, and right ascension is like ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saturn (astrology)
In astrology, planets have a meaning different from the astronomical understanding of definition of planet, what a planet is. Before the scientific revolution, age of telescopes, the night sky was thought to consist of two very similar components: fixed stars, which remained motionless in relation to each other, and moving objects/"Classical planet, wandering stars" ( grc, ἀστέρες πλανῆται, asteres planetai), which moved relative to the fixed stars over the course of the year(s). To the Ancient Greeks who learned from the Babylonians - the earliest astronomers/astrologers - this group consisted of the five planets visible to the naked eye and excluded Earth, plus the Sun and Moon. Although the Greek term ''planet'' applied mostly to the five 'wandering stars', the Ancients included the Sun and Moon as the ''Sacred 7 Luminaires/7 Heavens'' (sometimes referred to as "Lights",) making a total of 7 planets. The ancient Babylonians, Greeks, Persians, Romans and others ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jupiter (astrology)
In astrology, planets have a meaning different from the astronomical understanding of definition of planet, what a planet is. Before the scientific revolution, age of telescopes, the night sky was thought to consist of two very similar components: fixed stars, which remained motionless in relation to each other, and moving objects/"Classical planet, wandering stars" ( grc, ἀστέρες πλανῆται, asteres planetai), which moved relative to the fixed stars over the course of the year(s). To the Ancient Greeks who learned from the Babylonians - the earliest astronomers/astrologers - this group consisted of the five planets visible to the naked eye and excluded Earth, plus the Sun and Moon. Although the Greek term ''planet'' applied mostly to the five 'wandering stars', the Ancients included the Sun and Moon as the ''Sacred 7 Luminaires/7 Heavens'' (sometimes referred to as "Lights",) making a total of 7 planets. The ancient Babylonians, Greeks, Persians, Romans and others ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mars (astrology)
In astrology, planets have a meaning different from the astronomical understanding of definition of planet, what a planet is. Before the scientific revolution, age of telescopes, the night sky was thought to consist of two very similar components: fixed stars, which remained motionless in relation to each other, and moving objects/"Classical planet, wandering stars" ( grc, ἀστέρες πλανῆται, asteres planetai), which moved relative to the fixed stars over the course of the year(s). To the Ancient Greeks who learned from the Babylonians - the earliest astronomers/astrologers - this group consisted of the five planets visible to the naked eye and excluded Earth, plus the Sun and Moon. Although the Greek term ''planet'' applied mostly to the five 'wandering stars', the Ancients included the Sun and Moon as the ''Sacred 7 Luminaires/7 Heavens'' (sometimes referred to as "Lights",) making a total of 7 planets. The ancient Babylonians, Greeks, Persians, Romans and others ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venus (astrology)
In astrology, planets have a meaning different from the astronomical understanding of what a planet is. Before the age of telescopes, the night sky was thought to consist of two very similar components: fixed stars, which remained motionless in relation to each other, and moving objects/" wandering stars" ( grc, ἀστέρες πλανῆται, asteres planetai), which moved relative to the fixed stars over the course of the year(s). To the Ancient Greeks who learned from the Babylonians - the earliest astronomers/astrologers - this group consisted of the five planets visible to the naked eye and excluded Earth, plus the Sun and Moon. Although the Greek term ''planet'' applied mostly to the five 'wandering stars', the Ancients included the Sun and Moon as the ''Sacred 7 Luminaires/7 Heavens'' (sometimes referred to as "Lights",) making a total of 7 planets. The ancient Babylonians, Greeks, Persians, Romans and others thought of the 7 Classical Planets as gods and named their 7 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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