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Qibla Compass
A Qibla compass or qiblah compass (sometimes also called qibla/qiblah indicator or ''qiblanuma'') is a modified compass used by Muslims to indicate the direction to face to perform prayers. In Islam, this direction is called qibla, and points towards the city of Mecca and specifically to the Ka'abah. While the compass, like any other compass, points north, the direction of prayer is indicated by marks on the perimeter of the dial, corresponding to different cities, or by a second pointer set by the user according to their own location. To determine the proper direction, one has to know with some precision both the longitude and latitude of one's own location and those of Mecca, the city toward which one must face. Once that is determined, the values are applied to a spherical triangle, and the angle from the local meridian to the required direction of Mecca can be determined. The indicator usually consists of a round brass box with a hinged lid and an inset magnetic compass. A li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Al-Ashraf Compass And Qibla Diagram
__NOTOC__ Al-Ashraf, either from ( ar, الأشرف, 'the most noble') or (, 'the nobles'), may refer to: People * Al-Ashraf Al-Barsbay, Burji Mamluk sultan of Egypt (1422–1438) * Al-Ashraf Qansuh al-Ghuri, Mamluk Sultan (1501–1516) * Al-Ashraf Janbalat, Sultan of Egypt (1500–1501) * Al-Ashraf Khalil, Mamluk Sultan (1290–1293) * Al-Ashraf Kujuk, Mamluk Sultan (1341–1342) * Al-Ashraf Musa, Emir of Homs (1246–1263) * Al-Ashraf Musa, Sultan of Egypt (1250–1254) * Al-Ashraf Musa, Emir of Damascus and Ba'albek (1229–1237) * Al-Ashraf Sha'ban, Mamluk Sultan (1363–1377) * Al-Ashraf Tuman bay, last Sultan of Egypt (1516–1517) * Al-Ashraf Umar II (1242–1296), Rasulid sultan, mathematician and astronomer Places * Al Ashraf, Makkah, village in Makkah Region of Saudi Arabia * Al Ashraf, 'Asir, village in 'Asir Region of Saudi Arabia * Al-Ashraf (Taiz), district in Yemen Mosques * Al-Ashraf Mosque The Al-Ashraf Mosque or the Mosque-Madrasa of Sultan al-Ashraf Ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Islamic Culture
Islamic culture and Muslim culture refer to cultural practices which are common to historically Islamic people. The early forms of Muslim culture, from the Rashidun Caliphate to the early Umayyad period and the early Abbasid period, were predominantly Arab, Byzantine, Persian and Levantine. With the rapid expansion of the Islamic empires, Muslim culture has influenced and assimilated much from the Persian, Egyptian, North Caucasian, Turkic, Mongol, Indian, Bangladeshi, Pakistani, Malay, Somali, Berber, Indonesian, and Moro cultures. Islamic culture generally includes all of the practices which have developed around the religion of Islam. There are variations in the application of Islamic beliefs in different cultures and traditions. Language and literature Arabic Arabic literature ( ar, الأدب العربي / ALA-LC: ''al-Adab al-'Arabī'') is the writing, both prose and poetry, produced by writers in the Arabic language. The Arabic word used for literature is ''" A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Craig Retroazimuthal Projection
The Craig retroazimuthal map projection was created by James Ireland Craig in 1909. It is a modified cylindrical projection. As a retroazimuthal projection, it preserves directions from everywhere to one location of interest that is configured during construction of the projection. The projection is sometimes known as the Mecca projection because Craig, who had worked in Egypt as a cartographer, created it to help Muslims find their qibla. In such maps, Mecca is the configurable location of interest. Given latitude ''φ'' to plot, latitude ''φ'' of the fixed location of interest, longitude ''λ'' to plot, and the longitude ''λ'' of the fixed location of interest, the projection is defined by: :\begin x &= \lambda - \lambda_0\\ y &= \frac\Big(\sin \varphi \cos \left(\lambda - \lambda_0\right) - \tan \varphi_0 \cos \varphi\Big)\end But when ''λ'' − ''λ'' = 0, ''y'' above is undefined, so instead use the ratio's continuous completion: :y = \sin \varphi \cos \lef ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meridian (astronomy)
In astronomy, the meridian is the great circle passing through the celestial poles, as well as the zenith and nadir of an observer's location. Consequently, it contains also the north and south points on the horizon, and it is perpendicular to the celestial equator and horizon. Meridians, celestial and geographical, are determined by the pencil of planes passing through the Earth's rotation axis. For a location ''not'' at a geographical pole, there is a unique meridian plane in this axial-pencil through that location. The intersection of this plane with Earth's surface is the '' geographical meridian'', and the intersection of the plane with the celestial sphere is the celestial meridian for that location and time. There are several ways to divide the meridian into semicircles. In the horizontal coordinate system, the observer's meridian is divided into halves terminated by the horizon's north and south points. The observer's upper meridian passes through the zenith while the l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sundials
A sundial is a horological device that tells the time of day (referred to as civil time in modern usage) when direct sunlight shines by the apparent position of the Sun in the sky. In the narrowest sense of the word, it consists of a flat plate (the ''dial'') and a gnomon, which casts a shadow onto the dial. As the Sun appears to move through the sky, the shadow aligns with different hour-lines, which are marked on the dial to indicate the time of day. The ''style'' is the time-telling edge of the gnomon, though a single point or ''nodus'' may be used. The gnomon casts a broad shadow; the shadow of the style shows the time. The gnomon may be a rod, wire, or elaborately decorated metal casting. The style must be parallel to the axis of the Earth's rotation for the sundial to be accurate throughout the year. The style's angle from horizontal is equal to the sundial's geographical latitude. The term ''sundial'' can refer to any device that uses the Sun's altitude or azimuth ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astrolabes
An astrolabe ( grc, ἀστρολάβος ; ar, ٱلأَسْطُرلاب ; persian, ستارهیاب ) is an ancient astronomical instrument that was a handheld model of the universe. Its various functions also make it an elaborate inclinometer and an analog calculation device capable of working out several kinds of problems in astronomy. In its simplest form it is a metal disc with a pattern of wires, cutouts, and perforations that allows a user to calculate astronomical positions precisely. Historically used by astronomers, it is able to measure the altitude above the horizon of a celestial body, day or night; it can be used to identify stars or planets, to determine local latitude given local time (and vice versa), to survey, or to triangulate. It was used in classical antiquity, the Islamic Golden Age, the European Middle Ages and the Age of Discovery for all these purposes. The astrolabe's importance comes not only from the early developments into the study of astron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
