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Aranmula Kannadi
Aranmula Kannadi, meaning the Aranmula mirror, is a handmade, metal-alloy, first surface mirror made in Aranmula, a small town in Pathanamthitta, today's Kerala, India. Description Unlike normal "silvered" glass mirrors, it is a metal-alloy mirror or first surface mirror or front surface reflection mirror, which eliminates secondary reflections and aberrations typical of back surface mirrors. They are produced by one extended family in Aranmula. The exact metals used in the alloy are maintained as family secrets; metallurgists suggest that the alloy is a mix of copper and tin, so a type of speculum metal. It is polished for several days to achieve the mirror's reflective surface. The polishing is done using an abrasive paste made by mixing rice bran with oil extracted from seeds of ''maroṭṭi (Hydnocarpus pentandrus)''. Cultural significance The origins of the are linked to Aranmula Parthasarathy Temple. According to legend, centuries ago the royal chief brought eig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aranmula Kannadi
Aranmula Kannadi, meaning the Aranmula mirror, is a handmade, metal-alloy, first surface mirror made in Aranmula, a small town in Pathanamthitta, today's Kerala, India. Description Unlike normal "silvered" glass mirrors, it is a metal-alloy mirror or first surface mirror or front surface reflection mirror, which eliminates secondary reflections and aberrations typical of back surface mirrors. They are produced by one extended family in Aranmula. The exact metals used in the alloy are maintained as family secrets; metallurgists suggest that the alloy is a mix of copper and tin, so a type of speculum metal. It is polished for several days to achieve the mirror's reflective surface. The polishing is done using an abrasive paste made by mixing rice bran with oil extracted from seeds of ''maroṭṭi (Hydnocarpus pentandrus)''. Cultural significance The origins of the are linked to Aranmula Parthasarathy Temple. According to legend, centuries ago the royal chief brought eig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metallurgy
Metallurgy is a domain of materials science and engineering that studies the physical and chemical behavior of metallic elements, their inter-metallic compounds, and their mixtures, which are known as alloys. Metallurgy encompasses both the science and the technology of metals; that is, the way in which science is applied to the production of metals, and the engineering of metal components used in products for both consumers and manufacturers. Metallurgy is distinct from the craft of metalworking. Metalworking relies on metallurgy in a similar manner to how medicine relies on medical science for technical advancement. A specialist practitioner of metallurgy is known as a metallurgist. The science of metallurgy is further subdivided into two broad categories: chemical metallurgy and physical metallurgy. Chemical metallurgy is chiefly concerned with the reduction and oxidation of metals, and the chemical performance of metals. Subjects of study in chemical metallurgy include mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mirrors
A mirror or looking glass is an object that Reflection (physics), reflects an image. Light that bounces off a mirror will show an image of whatever is in front of it, when focused through the lens of the eye or a camera. Mirrors reverse the direction of the image in an equal yet opposite angle from which the light shines upon it. This allows the viewer to see themselves or objects behind them, or even objects that are at an angle from them but out of their field of view, such as around a corner. Natural mirrors have existed since prehistoric times, such as the surface of water, but people have been manufacturing mirrors out of a variety of materials for thousands of years, like stone, metals, and glass. In modern mirrors, metals like silver or aluminium are often used due to their high reflectivity, applied as a thin coating on glass because of its naturally smooth and very Hardness (materials science), hard surface. A mirror is a Wave (physics), wave reflector. Light consis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speculum Metal
Speculum metal is a mixture of around two-thirds copper and one-third tin, making a white brittle alloy that can be polished to make a highly reflective surface. It was used historically to make different kinds of mirrors from personal grooming aids to optical devices until it was replaced by more modern materials such as metal-coated glass mirrors. Speculum metal mixtures usually contain two parts copper to one part tin along with a small amount of arsenic, although there are other mixtures containing silver, lead, or zinc. This is about twice the proportion of tin to copper typically used in bronze alloys. Archaeologists and others prefer to call it "high-tin bronze", although this broad term is also used for other alloys such as bell metal, which is typically around 20% tin. Large speculum metal mirrors are hard to manufacture, and the alloy is prone to tarnish, requiring frequent re-polishing. However, it was the only practical choice for large mirrors in high-precision opt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bronze Mirror
Bronze mirrors preceded the glass mirrors of today. This type of mirror, sometimes termed a copper mirror, has been found by archaeology, archaeologists among elite assemblages from various cultures, from Etruscan art, Etruscan Italy to Japan. Typically they are round and rather small, in the West with a handle, in East Asia with a knob to hold at the back, often with a loop for a cord, or silk tassel. Some were fitted with small stands, and others had a hinged protective cover. They are first-surface mirrors, where the immediate bronze surface is flat, plain and highly polished to be reflective, rather than second-surface mirrors, like modern glass mirrors, where the reflection comes from a backing applied to the glass. They are significantly inferior to modern mirrors in terms of the quality of the reflection, but in older societies were sufficiently impressive to have religious significance in some societies. Examples include the melong in Tibetan Buddhism and the Toli ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aranmula Kottaram
Aranmula Kottaram or Aranmula Palace is an old palace at Aranmula, a historical and traditional village in Kerala, India. Aranmula Palace was built more than 200 years ago. This palace is known as Aranmula Vadakke Kottaram. Aranmula vadakke kottaram was the halt place of holy journey "Thiruvabharana khosha yathra"( A ritual of sabarimala temple and pandalam palace) at Aranmula. It is situated in front of Aranmula Sree Partha Sarathi Temple and very close to the Holy River Pampa. Vadakke kottaram is one of the best and rare example of architectural form Nalukettu which is made based on Thachu Sastra, or the Science of Carpentry and Traditional Vasthu. See also *Aranmula Aranmula is a temple town in the state of Kerala, India. It is known as the cultural capital of Pathanamthitta district, located at a distance of around 116 km from Trivandrum, the capital of Kerala, it is situated on the banks of the ... References Palaces_in_Kerala History of Pathanamt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geographical Indication
A geographical indication (GI) is a name or sign used on products which corresponds to a specific geographical location or origin (e.g., a town, region, or country). The use of a geographical indication, as an indication of the product's source, is intended as a certification that the product possesses certain qualities, is made according to traditional methods, or enjoys a good reputation due to its geographical origin. Article 22.1 of the TRIPS Agreement defines geographical indications as ''"...indications which identify a good as originating in the territory of a Member f the World Trade Organization or a region or locality in that territory, where a given quality, reputation or other characteristic of the good is essentially attributable to its geographical origin."'' ''Appellation d'origine contrôlée'' ('Appellation of origin') is a sub-type of geographical indication where quality, method, and reputation of a product originate from a strictly defined area specified in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London
London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a major settlement for two millennia. The City of London, its ancient core and financial centre, was founded by the Romans as '' Londinium'' and retains its medieval boundaries.See also: Independent city § National capitals The City of Westminster, to the west of the City of London, has for centuries hosted the national government and parliament. Since the 19th century, the name "London" has also referred to the metropolis around this core, historically split between the counties of Middlesex, Essex, Surrey, Kent, and Hertfordshire, which largely comprises Greater London, governed by the Greater London Authority.The Greater London Authority consists of the Mayor of London and the London Assembly. The London Mayor is distinguished fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Museum
The British Museum is a public museum dedicated to human history, art and culture located in the Bloomsbury area of London. Its permanent collection of eight million works is among the largest and most comprehensive in existence. It documents the story of human culture from its beginnings to the present.Among the national museums in London, sculpture and decorative and applied art are in the Victoria and Albert Museum; the British Museum houses earlier art, non-Western art, prints and drawings. The National Gallery holds the national collection of Western European art to about 1900, while art of the 20th century on is at Tate Modern. Tate Britain holds British Art from 1500 onwards. Books, manuscripts and many works on paper are in the British Library. There are significant overlaps between the coverage of the various collections. The British Museum was the first public national museum to cover all fields of knowledge. The museum was established in 1753, largely b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bahrain
Bahrain ( ; ; ar, البحرين, al-Bahrayn, locally ), officially the Kingdom of Bahrain, ' is an island country in Western Asia. It is situated on the Persian Gulf, and comprises a small archipelago made up of 50 natural islands and an additional 33 artificial islands, centered on Bahrain Island which makes up around 83 percent of the country's landmass. Bahrain is situated between Qatar and the northeastern coast of Saudi Arabia, to which it is connected by the King Fahd Causeway. According to the 2020 census, the country's population numbers 1,501,635, of which 712,362 are Bahraini nationals. Bahrain spans some , and is the third-smallest nation in Asia after the Maldives and Singapore. The capital and largest city is Manama. Bahrain is the site of the ancient Dilmun civilization.Oman: The Lost Land [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hamad Bin Isa Al Khalifa
Hamad bin Isa bin Salman Al Khalifa ( ar, حمد بن عيسى بن سلمان آل خليفة '; 28 January 1950) is King of Bahrain since 14 February 2002, after ruling as Emir of Bahrain from 6 March 1999. He is the son of Isa bin Salman Al Khalifa, the previous and first emir. The country has been ruled by the Al Khalifa dynasty since 1783. Early life and education Hamad bin Isa Al Khalifa was born on 28 January 1950 in Riffa, Bahrain. His parents were Isa bin Salman Al Khalifa, then Crown Prince, and Hessa bint Salman Al Khalifa. After attending Manama secondary school in Bahrain, Hamad was sent to England to attend Applegarth College in Godalming, Surrey before taking a place at The Leys School in Cambridge. Hamad then underwent military training, first with the British Army at Mons Officer Cadet School at Aldershot in Hampshire, graduating in September 1968. Four years later, in June 1972, Hamad attended the United States Army Command and General Staff Colle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
King Of Bahrain
The King of the Kingdom of Bahrain ( ar, ملك مملكة البحرين) is the monarch and head of state of Bahrain. The House of Khalifa has been the ruling family since 1783. Between 1783 and 1971, the Bahraini monarch held the title of hakim, and, from 1971 until 2002, the title of emir. On 14 February 2002, the emir of Bahrain, Hamad bin Isa Al Khalifa, declared Bahrain a kingdom and proclaimed himself the first king. The king enjoys wide ranging powers, which include appointing the prime minister and the cabinet, holding supreme command over the Defence Force, chairing the Higher Judicial Council, appointing the parliament's upper house and dissolving its elected lower house. List of rulers Hakims of Bahrain (1783–1971) The Arabic title of the Hakim, as transliterated, was ''Hakim al-Bahrayn'' ( en, Caretaker of Bahrain). The Hakim also held the honorific title of sheikh. Emirs of Bahrain (1971–2002) The Arabic title of the Emir, as transliterated, was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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