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Klaf (organization)
Klaf or Qelaf ( he, קְלָף) is the designation given a particular piece of skin. The Talmudic definition includes both the form of the skin and the way it is processed, in particular, that it must be tanned. Since the innovative ruling of '' Rabbeinu Tam'' (12th century Tosafist) it is primarily used to refer to parchment or vellum. It is one of the materials upon which a writes certain Jewish liturgical and ritual documents. Description and rules is a specially prepared, tanned, split skin of a kosher animal goat, cattle, or deer. Rabbinic literature addresses three forms of tanned skin: , consisting of the full, unsplit hide; and and , which are the split halves of the full hide. The rabbinic scholars are divided upon which is the inner and which is the outer of the two halves. Maimonides is of the opinion that was the inner layer and that was the outer layer The " Shulchan Aruch" rules in the reverse that was the outer layer and that was the inner layer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tefillin
Tefillin (; Modern Hebrew language, Israeli Hebrew: / ; Ashkenazim, Ashkenazic pronunciation: ), or phylacteries, are a set of small black leather boxes with leather straps containing scrolls of parchment inscribed with verses from the Torah. Tefillin are worn by adult Jews during weekday morning prayers. In Orthodox Judaism, Orthodox and traditional communities, they are worn solely by men, while some Reform Judaism , Reform and Conservative Judaism, Conservative (Masorti) communities allow them to be worn by both men and women. By traditional Jewish Law (halacha), women are exempt from most time-dependent positive commandments. Although "tefillin" is technically the plural form (the singular being "tefillah"), it is often used as a singular as well. The arm-tefillah (or ''shel yad'' [literally "of the hand"]) is placed on the upper (non-dominant) arm, and the strap wrapped around the forelimb, hand and middle finger; while the head-tefillah (or ''shel rosh'' [literally "of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sefer Torah
A ( he, סֵפֶר תּוֹרָה; "Book of Torah"; plural: ) or Torah scroll is a handwritten copy of the Torah, meaning the five books of Moses (the first books of the Hebrew Bible). The Torah scroll is mainly used in the ritual of Torah reading during Jewish prayers. At other times, it is stored in the holiest spot within a synagogue, the Torah ark, which is usually an ornate curtained-off cabinet or section of the synagogue built along the wall that most closely faces Jerusalem, the Mizrah, direction Jews face when Jewish prayer, praying. The text of the Torah is also commonly printed and bookbinding, bound in codex, book form for non-ritual functions, called a (plural ) ("five-part", for the five books of Moses), and is often accompanied by commentaries or translations. History The En-Gedi Scroll is an ancient Hebrew parchment found in 1970 at Ein Gedi, Israel. Radiocarbon testing dates the scroll to the third or fourth century CE (210–390 CE), although paleograp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitzvah
In its primary meaning, the Hebrew word (; he, מִצְוָה, ''mīṣvā'' , plural ''mīṣvōt'' ; "commandment") refers to a commandment commanded by God to be performed as a religious duty. Jewish law () in large part consists of discussion of these commandments. According to religious tradition, there are 613 such commandments. In its secondary meaning, the word ''mitzvah'' refers to a deed performed in order to fulfill such a commandment. As such, the term ''mitzvah'' has also come to express an individual act of human kindness in keeping with the law. The expression includes a sense of heartfelt sentiment beyond mere legal duty, as "you shall love your neighbor as yourself" (Leviticus 19:18). The opinions of the Talmudic rabbis are divided between those who seek the purpose of the ''mitzvot'' and those who do not question them. The latter argue that if the reason for each ''mitzvah'' could be determined, people might try to achieve what they see as the purpose of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halakha
''Halakha'' (; he, הֲלָכָה, ), also transliterated as ''halacha'', ''halakhah'', and ''halocho'' ( ), is the collective body of Jewish religious laws which is derived from the written and Oral Torah. Halakha is based on biblical commandments ('' mitzvot''), subsequent Talmudic and rabbinic laws, and the customs and traditions which were compiled in the many books such as the ''Shulchan Aruch''. ''Halakha'' is often translated as "Jewish law", although a more literal translation of it might be "the way to behave" or "the way of walking". The word is derived from the root which means "to behave" (also "to go" or "to walk"). ''Halakha'' not only guides religious practices and beliefs, it also guides numerous aspects of day-to-day life. Historically, in the Jewish diaspora, ''halakha'' served many Jewish communities as an enforceable avenue of law – both civil and religious, since no differentiation of them exists in classical Judaism. Since the Jewish Enlightenment (''Hask ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abraham Ben Isaac Of Narbonne
Abraham ben Isaac of Narbonne ()(c. 1080-85 – 1158) was a Provençal rabbi, also known as Raavad II, and author of the halachic work ''Ha-Eshkol'' (''The Cluster''). Biography Abraham ben Isaac was probably born at Montpellier. His teacher was Moses ben Joseph ben Merwan ha-Levi, and during the latter's lifetime Abraham was appointed president (Av Beth Din) of the rabbinical board of Narbonne – composed of nine members – and was made principal of the rabbinical academy. In the latter capacity he taught two of the greatest Talmudists of Provence – namely, Abraham ben David III, who afterward became his son-in-law, and Zerahiah ha-Levi. Abraham ben Isaac died at Narbonne in 1158. Writings Like most of the Provençal scholars, Raavad II was a diligent author, composing numerous commentaries upon the Talmud, all of which, however, have been lost with the exception of that upon the treatise ''Baba Batra'', of which a manuscript has been preserved in Munich. Numerous quo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Talmud
The Talmud (; he, , Talmūḏ) is the central text of Rabbinic Judaism and the primary source of Jewish religious law (''halakha'') and Jewish theology. Until the advent of modernity, in nearly all Jewish communities, the Talmud was the centerpiece of Jewish cultural life and was foundational to "all Jewish thought and aspirations", serving also as "the guide for the daily life" of Jews. The term ''Talmud'' normally refers to the collection of writings named specifically the Babylonian Talmud (), although there is also an earlier collection known as the Jerusalem Talmud (). It may also traditionally be called (), a Hebrew abbreviation of , or the "six orders" of the Mishnah. The Talmud has two components: the Mishnah (, 200 CE), a written compendium of the Oral Torah; and the Gemara (, 500 CE), an elucidation of the Mishnah and related Tannaitic writings that often ventures onto other subjects and expounds broadly on the Hebrew Bible. The term "Talmud" may refer to eith ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandpaper
upright=1.35, Sheets of sandpaper with different grit sizes (40 (coarse), 80, 150, 240, 600 (fine)). Sandpaper and glasspaper are names used for a type of coated abrasive that consists of sheets of paper or cloth with abrasive material glued to one face. There are many varieties of sandpaper, with variations in the paper or backing, the material used for the grit, grit size, and the bond. In the modern manufacture of these products, sand and glass have been replaced by other abrasives such as aluminium oxide or silicon carbide. It is common to use the name of the abrasive when describing the paper, e.g. "aluminium oxide paper", or "silicon carbide paper". Sandpaper is produced in a range of grit sizes and is used to remove material from surfaces, whether to make them smoother (for example, in painting and wood finishing), to remove a layer of material (such as old paint), or sometimes to make the surface rougher (for example, as a preparation for gluing). The grit size of san ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tannin
Tannins (or tannoids) are a class of astringent, polyphenolic biomolecules that bind to and precipitate proteins and various other organic compounds including amino acids and alkaloids. The term ''tannin'' (from Anglo-Norman ''tanner'', from Medieval Latin ''tannāre'', from ''tannum'', oak bark) refers to the use of oak and other bark in tanning animal hides into leather. By extension, the term ''tannin'' is widely applied to any large polyphenolic compound containing sufficient hydroxyls and other suitable groups (such as carboxyls) to form strong complexes with various macromolecules. The tannin compounds are widely distributed in many species of plants, where they play a role in protection from predation (acting as pesticides) and might help in regulating plant growth. The astringency from the tannins is what causes the dry and puckery feeling in the mouth following the consumption of unripened fruit, red wine or tea. Likewise, the destruction or modification of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oak Apple
Oak apple or oak gall is the common name for a large, round, vaguely apple-like gall commonly found on many species of oak. Oak apples range in size from in diameter and are caused by chemicals injected by the larva of certain kinds of gall wasp in the family Cynipidae. The adult female wasp lays single eggs in developing leaf buds. The wasp larvae feed on the gall tissue resulting from their secretions, which modify the oak bud into the gall, a structure that protects the developing larvae until they undergo metamorphosis into adults. Considerable confusion exists in the general literature between the oak apple and the oak marble gall. The oak marble is frequently called the oak apple due to the superficial resemblance and the preponderance of the oak marble gall in the wild. Other galls found on oak trees include the oak artichoke gall and the acorn cup gall, but each of these has its own distinctive form. Some common oak-apple-forming species are the '' Biorhiza pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galls
Galls (from the Latin , 'oak-apple') or ''cecidia'' (from the Greek , anything gushing out) are a kind of swelling growth on the external tissues of plants, fungi, or animals. Plant galls are abnormal outgrowths of plant tissues, similar to benign tumors or warts in animals. They can be caused by various parasites, from viruses, fungi and bacteria, to other plants, insects and mites. Plant galls are often highly organized structures so that the cause of the gall can often be determined without the actual agent being identified. This applies particularly to some insect and mite plant galls. The study of plant galls is known as cecidology. In human pathology, a gall is a raised sore on the skin, usually caused by chafing or rubbing. Causes of plant galls Insects and mites Insect galls are the highly distinctive plant structures formed by some herbivorous insects as their own microhabitats. They are plant tissue which is controlled by the insect. Galls act as both the habitat a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barley
Barley (''Hordeum vulgare''), a member of the grass family, is a major cereal grain grown in temperate climates globally. It was one of the first cultivated grains, particularly in Eurasia as early as 10,000 years ago. Globally 70% of barley production is used as animal fodder, while 30% as a source of fermentable material for beer and certain distilled beverages, and as a component of various foods. It is used in soups and stews, and in barley bread of various cultures. Barley grains are commonly made into malt in a traditional and ancient method of preparation. In 2017, barley was ranked fourth among grains in quantity produced () behind maize, rice and wheat. Etymology The Old English word for barley was ', which traces back to Proto-Indo-European and is cognate to the Latin word ' "flour" (''see corresponding entries''). The direct ancestor of modern English ''barley'' in Old English was the derived adjective ''bærlic'', meaning "of barley". The first citation of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
