The word "Salt" in English often means 'table salt' or 'edible salt' (which is salt that can be eaten). This kind of salt is made up mostly of sodium chloride (NaCl). It is one of the few minerals that are eaten a lot by humans, but it can be used for other things besides giving food its flavor.. There are different kinds of edible salt: unrefined salt (for example sea salt), refined salt (table salt), and iodized salt. It is a crystalline solid that has the color white, pale pink, or light gray. It is usually taken from sea water or rock deposits. Natural sea salt has little parts and pieces of other minerals besides sodium chloride. Rock salts that can be eaten are sometimes a little grayish in color because of these other minerals.. Sodium (Na) and chlorine (Cl) are the two elements that make up sodium chloride. Both of these are needed for all living creatures, including humans, but they are not always eaten in the form of salt, where they are found together in large amounts. Some ...

A European superstition holds that spilling salt is an evil omen. One widespread explanation of the belief that it is unlucky to spill salt is that Judas Iscariot spilled the salt at the Last Supper. Leonardo da Vinci's The Last Supper depicts Judas Iscariot having knocked over a salt-cellar. A more simple explanation is that salt used to be extremely expensive and spilling it was associated with future loss in general. Another explanation may be that salt makes the soil barren for a long time, so spilling salt is a form of cursing a land. This may not be the actual explanation; salt was a valuable commodity in ancient times, and as such a symbol of trust and friendship. A German proverb held that "whoever spills salt arouses enmity". According to Charles Nodier, among "savages", the "action of spilling salt ... indicates among them the refusal of protection and hospitality from such strangers as they may have reason to suspect are thieves and murderers." Salt is also a religious symbol. Salt is ...

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... , also known as ammonia inhalants, spirit of hartshorn or sal volatile, are chemical compounds often used to arouse consciousness. The usual active compound is ammonium carbonate-a colorless-to-white, crystalline solid ((NH4)2CO3). Because most modern solutions are mixed with water, they should more properly be called "aromatic spirits of ammonia". Modern solutions may also contain other products to perfume or act in conjunction with the ammonia, such as lavender oil or eucalyptus oil. Historically, smelling salts have been used on people feeling faint, or who have fainted. They are usually administered by others, but may be self-administered; some at-risk groups, such as pregnant women, may be advised to keep them close to hand. Smelling salts are often used on athletes (particularly boxers) who have been dazed or knocked unconscious to restore consciousness and mental alertness. Smelling salts are now banned in most boxing competitions, but are not ...

... is used in bath salts, swimming pools, as an alkalinity source for water treatment, and as a phosphate-free product replacing the trisodium phosphate for heavy duty cleaning.[citation needed]. Sodium sesquicarbonate is used in the conservation of copper and copper alloy artifacts that corrode due to contact with salt (called "bronze disease" due to its effect on bronze). The chloride from salt forms copper(I) chloride. In the presence of oxygen and water, even the small amount of moisture in the atmosphere, the cuprous chloride forms copper(II) chloride and hydrochloric acid, the latter of which dissolves the metal and forms more cuprous chloride in a self-sustaining reaction that leads to the entire destruction of the object. Treatment with sodium sesquicarbonate removes copper(II) chlorides from the corroded layer.[citation needed]. It is also used as a precipitating water softener, which combines with hard water minerals (calcium- and magnesium-based minerals) to form ...

When wind, whitecaps, and breaking waves mix air into the sea surface, the air regroups to form bubbles, floats to the surface, and bursts at the air-sea interface.[9] When they burst, they release up to a thousand particles of sea spray,[9][10] which range in size from nanometers to micrometers and can be expelled up to 20 cm from the sea surface.[9] Film droplets make up the majority of the smaller particles created by the initial burst, while jet droplets are generated by a collapse of the bubble cavity and are ejected from the sea surface in the form of a vertical jet.[11][10] In windy conditions, water droplets are mechanically torn off from crests of breaking waves. Sea spray droplets generated via such a mechanism are called spume droplets [10] and are typically larger in size and have less residence time in air. Impingement of plunging waves on sea surface also generates sea spray in the form of splash droplets [10][12]. The composition of the sea spray depends primarily on the ...

Estimates of the total reserves of salt in the mines range from 82 million tons[which?][10] to 600 million tons.[11] In raw form it contains negligible amounts of Calcium, Magnesium, Potassium, Sulphates and moisture, with Iron, Zinc, Copper, Manganese, Chromium and Lead as trace elements.[24][25] Salt from Khewra, also known as Himalayan salt, is red, pink, off-white or transparent.[26] In the early years of British rule, the Khewra mine produced about 28,000 to 30,000 tons per annum; it increased to about 187,400 tons per annum for the five fiscal years ending 1946-7 and to 136,824 tons for the two years ending 1949-50 with the systematic working introduced by Dr H. Warth.[27] The mine's output was reported in 2003 to be 385,000 tons of salt per annum, which amounts to almost half of Pakistan's total production of rock salt.[28] At that rate of output, the tunnel would be expected to last for another 350 years.[9]. The mine comprises nineteen stories, of which eleven are below ground. From the ...

The Ghanaian salt industry as of 2009 produces between 250,000 and 300,000 tonnes of salt annually. However, it is underachieving in terms of production capability. The Ghana Export Promotion Council (GEPC) has identified the sector as an important one to aid the diversification of Ghana's economy, and the Ghanaian government is currently within the process of developing the industry. Ghana has the production potential of 2.2 million tonnes of salt annually. Economists in Ghana believe the nation's salt industry represents a potential source of revenue from Nigerian purchasers who currently rely on Brazilian imports. The GEPC has requested that the Commonwealth Secretariat establish a framework in Ghana to coordinate the development of the salt sector in the country. As a result, a team of consultants have conducted many interviews and seminars and undertaken market analysis with a realistic strategy and targets. While developers realise that Ghana will never be a leading world producer, the ...

The earliest stone bridge over the Liffey of which there is solid evidence was the Bridge of Dublin (on the site of the current Fr. Mathew Bridge), built by the Dominicans in 1428, which survived well into the 18th century.[16] This four-arch bridge included various buildings such as a chapel, bakehouse and possibly an inn[17] and replaced an earlier wooden bridge (Dubhghalls Bridge) on the same site. Island Bridge (a predecessor of the current bridge) was added in 1577. With the development of commercial Dublin in the 17th century, four new bridges were added between 1670 and 1684: Barrack, or Bloody Bridge, (the forerunner of the current Rory O'More Bridge), Essex Bridge (Grattan Bridge), Ormond Bridge (O'Donovan Rossa Bridge) and Arran Bridge. The oldest bridge still standing is Mellows Bridge, (originally Queens Bridge) constructed in 1764 on the site of Arran Bridge, which was destroyed by floods in 1763. The first iron bridge was the Ha'penny Bridge built in 1816. Farmleigh Bridge, also ...

... is a chemical compound with the formula NaFe4S3(NO)7 first described by Zacharie Roussin.[1] It consists of the sodium salt of the [Fe4S3(NO)7]− anion and is classified as metal nitrosyl compound. The cluster anion has the geometry of an incomplete cubane-type cluster with C3v symmetry. The dark colour of the complex is attributed to a number of charge-transfer interactions.[2]. ...

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வேதியியலில் உப்பு (salt) என்பது ஒரு காடியும், காரமும் சேர்ந்து வேதியியல் வினைப்படும் பொழுது நடுமை அடைகையில் உருவாகும் பொருள். உப்புகள் மின்ம முனைப்படும் சேர்மங்கள் ஆகும். உப்புகளில் நேர்மின்மம் கொண்ட நேர்முனையி அல்லது கேட்டயான் (cation) பகுதியும், எதிர்மின்மம் கொண்ட எதிர்முனையி அல்லது ஆனையான் (anion) பகுதியும் கொண்ட ஆனால் மொத்தமாக மின்மம் ஏதுமற்ற, மின்மநடுநிலை கொண்ட ஒரு பொருள். ...

தருப்பைப்புல் என்பது Desmostachya bipinnata என்ற அறிவியல் பெயர் கொண்ட புல்வகையைச் சேர்ந்த தாவரம் ஆகும். இது புதர்ச் செடியாகத் தரையடி மட்டத் தண்டிலிருந்து செழித்து வளரும். இதில் பல வகைகள் உண்டு. தருப்பைப் பொதுவாக ஆங்கிலத்தில் ஆல்பா புல் (Halfa Grass), Big cordgrass, மற்றும் உப்புக்கோரைப்புல் (Salt reed-grass) என அறியப்படுகிறது.[5] பண்டைய மனித உலக வரலாற்றில் அறியப்பட்ட மற்றும் பயன்படுத்தப்பட்ட இத்தாவரம் ...