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Keilim
''Keilim ''or ''Kelim'' (, literally "Vessels") is the first tractate in the Order of Tohorot in the Mishnah. It contains thirty chapters, making it the longest tractate in the Mishnah. The Tosefta on Keilim consists of twenty-five chapters,Jewish Encyclopedia bibliography: * Z. Frankel, Hodegetica in Mischnam', p. 263, Leipsic, 1859. divided into ''Bava Kama'' ("First Gate"), ''Bava Metzia'' ("Middle Gate"), and ''Bava Batra'' ("Final Gate") of ''Keilim''. The tractate discusses the laws of ritual purity and impurity pertaining to all types of vessels. * Chapter 1 clarifies the ranking of ritual impurities * Chapters 2–10 discuss earthenware vessels ( clay ovens, etc.) * Chapters 11–14 discuss metal vessels * Chapters 15–19 discuss vessels made of wood, leather, and bone * Chapters 20–25 discuss laws of purity and impurity for vessels * Chapters 26–28 discuss laws pertaining to leather and clothing * Chapter 29 discusses the seams of clothing and vessels * Chapter 30 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clay Oven
The primitive clay oven, or earthen oven / cob oven, has been used since ancient times by diverse cultures and societies, primarily for, but not exclusive to, baking before the invention of cast-iron stoves, and gas and electric ovens. The general build and shape of clay ovens were, mostly, common to all peoples, with only slight variations in sizeMaimonides (1967), p. 46 (Seder Taharot), s.v. ''Keilim'' 5:1. and in materials used to construct the oven. In primitive courtyards and farmhouses, earthen ovens were built on the ground. In Arabian, Middle Eastern and North African societies, bread was often baked within a clay oven called in some Arabic dialects a ''Tabun oven, tabun'' (also Transliteration, transliterated ''taboon'', from the ), or else in a clay oven called a ''tannour'', and in other dialects ''mas'ad''. The clay oven, synonymous with the Hebrew word ''tannour'', lit. 'oven', was shaped like a truncated cone (geometry), cone, with an opening either at the top or b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tohorot
''Tohorot'' () is the sixth and last order of the Mishnah (also of the Tosefta and Talmud). This order deals with the clean/unclean distinction and family purity. This is the longest of the orders in the Mishnah. There are 12 tractates: #'' Keilim:'' (כלים "Vessels"); deals with a large array of various utensils and how they fare in terms of purity. 30 chapters, the longest in the Mishnah. #'' Oholot:'' (אוהלות "Tents"); deals with the uncleanness from a corpse and its peculiar property of defiling people or objects either by the latter "tenting" over the corpse, or by the corpse "tenting" over them, or by the presence of both corpse and person or object under the same roof or tent. #'' Nega'im:'' (נגעים "Plagues"); deals with the laws of the ''tzaraath''. #''Parah:'' (פרה "Cow"); deals largely with the laws of the Red Heifer ''(Para Adumah)''. #'' Tohorot:'' (טהרות "Purities"); deals with miscellaneous laws of purity, especially the actual mechanics of cont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bone
A bone is a rigid organ that constitutes part of the skeleton in most vertebrate animals. Bones protect the various other organs of the body, produce red and white blood cells, store minerals, provide structure and support for the body, and enable mobility. Bones come in a variety of shapes and sizes and have complex internal and external structures. They are lightweight yet strong and hard and serve multiple functions. Bone tissue (osseous tissue), which is also called bone in the uncountable sense of that word, is hard tissue, a type of specialised connective tissue. It has a honeycomb-like matrix internally, which helps to give the bone rigidity. Bone tissue is made up of different types of bone cells. Osteoblasts and osteocytes are involved in the formation and mineralisation of bone; osteoclasts are involved in the resorption of bone tissue. Modified (flattened) osteoblasts become the lining cells that form a protective layer on the bone surface. The mine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jerusalem Talmud
The Jerusalem Talmud (, often for short) or Palestinian Talmud, also known as the Talmud of the Land of Israel, is a collection of rabbinic notes on the second-century Jewish oral tradition known as the Mishnah. Naming this version of the Talmud after Palestine or the Land of Israelrather than Jerusalemis considered more accurate, as the text originated mainly from Galilee in Byzantine Palaestina Secunda rather than from Jerusalem, where no Jews were allowed to live at the time. The Jerusalem Talmud predates its counterpart, the Babylonian Talmud (known in Hebrew as the ), by about a century. It was written primarily in Galilean Aramaic. It was compiled between the late fourth century to the first half of the fifth century. Both versions of the Talmud have two parts, the Mishnah (of which there is only one version), which was finalized by Judah ha-Nasi around the year 200 CE, and either the Babylonian or the Jerusalem Gemara. The Gemara is what differentiates the Jerusalem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Talmud
The Talmud (; ) is the central text of Rabbinic Judaism and the primary source of Jewish religious law (''halakha'') and Jewish theology. Until the advent of Haskalah#Effects, modernity, in nearly all Jewish communities, the Talmud was the centerpiece of Jewish culture, Jewish cultural life and was foundational to "all Jewish thought and aspirations", serving also as "the guide for the daily life" of Jews. The Talmud includes the teachings and opinions of thousands of rabbis on a variety of subjects, including halakha, Jewish ethics, Jewish philosophy, philosophy, Jewish customs, customs, Jewish history, history, and Jewish folklore, folklore, and many other topics. The Talmud is a commentary on the Mishnah. This text is made up of 63 Masekhet, tractates, each covering one subject area. The language of the Talmud is Jewish Babylonian Aramaic. Talmudic tradition emerged and was compiled between the destruction of the Second Temple in 70 CE and the Arab conquest in the early seve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gemara
The Gemara (also transliterated Gemarah, or in Yiddish Gemore) is an essential component of the Talmud, comprising a collection of rabbinical analyses and commentaries on the Mishnah and presented in 63 books. The term is derived from the Aramaic word and rooted in the Semitic word ג-מ-ר (gamar), which means "to finish" or "complete". Initially, the Gemara was transmitted orally and not permitted to be written down. However, after Judah the Prince compiled the Mishnah around 200 CE, rabbis from Babylonia and the Land of Israel extensively studied the work. Their discussions were eventually documented in a series of books, which would come to be known as the Gemara. The Gemara, when combined with the Mishnah, forms the full Talmud. There are two versions of the Gemara: the Babylonian Talmud (Talmud Bavli) and the Jerusalem Talmud (Talmud Yerushalmi). The Babylonian Talmud, compiled by scholars in Babylonia around 500 CE and primarily from the academies of Sura, Pumbedi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glass
Glass is an amorphous (non-crystalline solid, non-crystalline) solid. Because it is often transparency and translucency, transparent and chemically inert, glass has found widespread practical, technological, and decorative use in window panes, tableware, and optics. Some common objects made of glass are named after the material, e.g., a Tumbler (glass), "glass" for drinking, "glasses" for vision correction, and a "magnifying glass". Glass is most often formed by rapid cooling (quenching) of the Melting, molten form. Some glasses such as volcanic glass are naturally occurring, and obsidian has been used to make arrowheads and knives since the Stone Age. Archaeological evidence suggests glassmaking dates back to at least 3600 BC in Mesopotamia, Ancient Egypt, Egypt, or Syria. The earliest known glass objects were beads, perhaps created accidentally during metalworking or the production of faience, which is a form of pottery using lead glazes. Due to its ease of formability int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clothing
Clothing (also known as clothes, garments, dress, apparel, or attire) is any item worn on a human human body, body. Typically, clothing is made of fabrics or textiles, but over time it has included garments made from animal skin and other thin sheets of materials and natural products found in the environment, put together. The wearing of clothing is mostly restricted to human beings and is a feature of all human societies. The amount and type of clothing worn depends on gender, body type, social factors, and geographic considerations. Garments cover the body, footwear covers the feet, gloves cover the hands, while hats and headgear cover the head, and underwear covers the intimate parts. Clothing serves many purposes: it can serve as protection from the elements, rough surfaces, sharp stones, rash-causing plants, and insect bites, by providing a barrier between the skin and the environment. Clothing can insulate against cold or hot conditions, and it can provide a hygienic barrie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wood
Wood is a structural tissue/material found as xylem in the stems and roots of trees and other woody plants. It is an organic materiala natural composite of cellulosic fibers that are strong in tension and embedded in a matrix of lignin that resists compression. Wood is sometimes defined as only the secondary xylem in the stems of trees, or more broadly to include the same type of tissue elsewhere, such as in the roots of trees or shrubs. In a living tree, it performs a mechanical-support function, enabling woody plants to grow large or to stand up by themselves. It also conveys water and nutrients among the leaves, other growing tissues, and the roots. Wood may also refer to other plant materials with comparable properties, and to material engineered from wood, woodchips, or fibers. Wood has been used for thousands of years for fuel, as a construction material, for making tools and weapons, furniture and paper. More recently it emerged as a feedstock for the production ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leather
Leather is a strong, flexible and durable material obtained from the tanning (leather), tanning, or chemical treatment, of animal skins and hides to prevent decay. The most common leathers come from cattle, sheep, goats, equine animals, buffalo, pigs and hogs, ostriches, and aquatic animals such as seals and alligators. Leather can be used to make a variety of items, including clothing, footwear, handbags, furniture, tools and sports equipment, and lasts for decades. Leather making has been practiced for more than 7,000 years and the leading producers of leather today are China and India. Critics of tanneries claim that they engage in unsustainable practices that pose health hazards to the people and the environment near them. Production processes The leather manufacturing process is divided into three fundamental subprocesses: preparatory stages, tanning, and crusting. A further subprocess, finishing, can be added into the leather process sequence, but not all leathers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metal
A metal () is a material that, when polished or fractured, shows a lustrous appearance, and conducts electrical resistivity and conductivity, electricity and thermal conductivity, heat relatively well. These properties are all associated with having electrons available at the Fermi level, as against nonmetallic materials which do not. Metals are typically ductile (can be drawn into a wire) and malleable (can be shaped via hammering or pressing). A metal may be a chemical element such as iron; an alloy such as stainless steel; or a molecular compound such as polythiazyl, polymeric sulfur nitride. The general science of metals is called metallurgy, a subtopic of materials science; aspects of the electronic and thermal properties are also within the scope of condensed matter physics and solid-state chemistry, it is a multidisciplinary topic. In colloquial use materials such as steel alloys are referred to as metals, while others such as polymers, wood or ceramics are nonmetallic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
