A thin strip of type metal, used to separate lines of type in printing.
Metal used for flashing material.
A heavy, soft, malleable, ductile, bluish white metallic element often used as an alloy in making steel. Lead, when added to steel, can make a more free-machining steel.
a naturally-occurring heavy, soft metallic element; human exposure can cause brain and nervous system damage, especially in children.
A heavy metal used for thousands of years for pipes, roofs, gutters etc.
This odorless and tasteless chemical can leach into water from the corrosion of household plumbing systems or from the erosion of natural deposits. According to the definition in California Proposition 65, may lead to elevated blood pressure levels and/or kidney damage in adults. If ingested regularly by children, lead may cause delays in physical or mental development.
A metal known to be toxic since Roman times, lead is still used in faucets today. As an additive to tin, brass, or antimony, lead makes the metal softer and easier to work with. The EPA has set no maximum contaminant ( MCL) for lead. The expense of replacing U.S. plumbing systems that contain lead is so astronomical that it can only be done slowly and gradually. See purged line.
a metal that can make infants and young children sick.
Emitted from the combustion of leaded gasoline. When released into the air, lead particles can be inhaled or incorporated into the soil as a metal particle. Lead accumulates in the body over time and effects many tissues including the brain, kidneys, and bone marrow. It is especially damaging to young children. As of 1991, the sale of leaded gasoline in California has ceased. The burning of materials that contain lead, such as wood painted with lead paint, is prohibited.
1. Soft and heavy metallic element used since Roman times. 2. Short, insulated electrical conductor 3. The section of masonry wall built up as a guide for laying the balance of the wall. A line is attached to leads as a guide for constructing a wall between them. 4. Hanging (usually vertical) guide beam that aligns the hammer and the pile 5. The distance a screw thread advances in one complete turn
A heavy soft malleable ductile but inelastic bluish white metallic element found mostly in combination and used in pippes, cable sheaths, batteries, solder, type metal, and shields against radioactivity.
A heavy, ductile, soft gray metal. Relatively impenetrable to radiation. Uses include storage batteries, cable covering, ammunition, pipe, solder and alloys, paint base. Hazard: Long term exposure damages the blood-forming bone marrow and the urinary, reproductive, and nervous systems.
Soft, malleable bluish-grey metal. Its principal ore is galena (lead sulfide).
A heavy metal that is hazardous to human health if it is breathed or swallowed.
Lead is a heavy metal which is highly toxic. It is excreted very slowly from the body and is therefore stored there. Among other things, lead interferes with the formation of haemoglobin, which is needed to bind oxygen to the blood. Leaded fuel has been a major source of lead emissions and still remains a problem in many parts of the world. Lead is also used in electrical cables and as an additive in paint, for example. Lead is one of the toxic heavy metals we must stop using if we are to improve the environment in the longer term.
an environmental heavy metal linked to developmental defects. (More? Defects - Chemical Notes | Defects - Heavy Metals )
A heavy metal used in many materials and products. It is a natural element and does not break down in the environment. When absorbed into the body, it can be highly toxic to many organs and systems.
a heavy metal that may be hazardous to health if breathed or swallowed. Lead can bioaccumulate in fish and wildlife.
One of the metals that may be alloyed with tin to create pewter. Because there were no tin mines in this country, the only source of tin for 18th century American pewterers was scrap English pewter, melted down and adulterated with lead. This is why, generally, most American cast pewter will contain more lead than comparable English pewter. Britannia, English or American, contains no lead and modern pewter, by law, contains no lead.
A heavy metal that is harmful is breathed or swallowed.
A naturally occurring trace metal that accumulates in the environment and can be toxic to humans and aquatic life. Important sources of lead in surface waters include steel and iron industries, lead production, and processing operations, and urban runoff. Measured in mg/L or ppm. The Action Level for lead is 0.015 mg/L or ppm.
(1)A metallic element (chemical symbol Pb). (2)A metal conductor used to provide a connection from the inside of a device package to the outside world for soldering or other mounting techniques. Leads are also commonly called pins.
A toxic metal with the symbol Pb, which stands for Plumbum (latin), with a very high density.
heavy, very soft dull silvery metal with a low melting point: may be used as a weight in the base of sculpture
is a highly toxic, heavy, bluish gray metal that was used in paints, pipe solder, food cans, gasoline, and in some mini-blinds. You can be exposed to lead through old paint and paint dust, water, food, dirt, and dishes made in some countries.
Usually comes from corrosion of pipes and plumbing fixtures. Causes numerous health disorders and reduced IQ scores.
Lead is a metal contaminant that occurs in drinking water as a result of the corrosion of pipes in a plumbing system. Ingestion of lead can cause severe developmental delays in children and kidney failure and/or stroke in adults.
a metal added to some gasoline to improve engine performance. As the engine runs, lead particles escape through the exhaust pipe. Sources of lead include paint, metal refineries, and manufacturing of lead storage batteries.
A metal, previously used as a pigment in paints. Discontinued in the early 1950s by industry consensus standard, and banned by the Consumer Products Safety Commission in 1978 because of its toxicity. .
a heavy metal. Several isotopes of lead, such as Pb-210 which emits beta radiation, are in the uranium decay chain.
An octane enhancer. One gram of lead increases the octane of one gallon of gasoline about 6 numbers. The EPA has phased down the use of lead in gasoline as it has been determined to be a health hazard. Lead has been prohibited in highway vehicle gasoline since January 1, 1996.
Soft metal used in various alloy products. Damages nervous system, causes abdominal pain, and can lead to blood and brain disorders.
A natural metal used in pipes, cable sheaths, batteries, solder, and radioactivity shields. Children who are exposed to lead may have delayed physical or mental development and minor attention span deficits and learning disabilities. Exposed adults may experience kidney problems and high blood pressure.
A heavy metal that thuds when dropped. Used in the expression "Our lead title this season is luminous and compelling."
An inelastic, bluish-white, metallic element found mostly in combination with other metals, and used primarily in pipes, cable sheaths, batteries and solder
A heavy metal that is hazardous to health if breathed or swallowed. Its use in gasoline, paints, and plumbing compounds has been sharply restricted or eliminated by federal laws and regulations.
Lead is a heavy metal that can accumulate in the human body. It exhibits a high degree of chronic toxicity, especially in children. Lead can adversely affect mental development and performance, kidney function, liver function, and blood chemistry. Exposure to lead typically occurs through ingestion or inhalation. Sources of ambient lead are combustion of fuels with lead additives, coal combustion, smelting operations, carbattery plants or incinerators that burn waste containing lead or lead compounds. The introduction of unleaded gasoline in 1975 has significantly reduced ambient lead levels.
Lead is a metal found naturally in the environment as well as in manufactured products. The major sources of lead emissions have historically been motor vehicles (such as cars and trucks) and industrial sources. Due to the phase out of leaded gasoline, metals processing is the major source of lead emissions to the air today. The highest levels of lead in air are generally found near lead smelters. Other stationary sources are waste incinerators, utilities, and lead-acid battery manufacturers. In the ambient air, lead exists primarily as inhalable-size particulate matter. Lead occurs naturally in small quantities in soil, water and air. Learn More...
A gray-white metal that is soft, malleable, ductile, and resistant to corrosion. Sources of lead resulting in concentrations in the air include industrial sources and crustal weathering of soils followed by fugitive dust emissions. Health effects from exposure to lead include brain and kidney damage and learning disabilities. Lead is the only substance which is currently listed as both a criteria air pollutant and a toxic air contaminant.
Poisonous heavy metallic element. Exposure to lead compounds can cause anemia, mood swings, intense abdominal cramps, confusion and brain damage. Nerve paralysis usually begins with the hands. Before 1950, about 25% of all severe cases ended in death.
A toxic pollutant, typically found in older homes, that is a component of lead-based paint.
A soft, malleable heavy metal. In the past, compounds of lead were used as a white pigment, and were used in primers to prevent tannin bleed-through.
An ion that causes haze and is toxic.
Tetra-ethyl (TEL) or tetra-methyl (TML) lead, primarily. These lead alkyls improve the octane rating of certain motor gasoline blendstocks quite inexpensively. Concern about the health effects of lead and other airborne pollutants generated restrictions on use of these octane boosters in many parts of the world over the past few years.
A heavy (density 11.3) soft metal, with a dull blue-grey appearance. It has a low melting point, and for this reason it has been used in solders. Lead is a toxic substance. Its main use is in batteries; especially those used in vehicles. Its chemical symbol is Pb.
a heavy metal that is soluble in water and can be easily absorbed in the body, where it accumulates. One of the six criteria pollutants, it was commonly used in gasoline until it was banned in the 1980s.
A heavy metal (according to Zeppelin.)
Space added between lines of type to space out text and provide visual separation of the lines. Measured in points or fractions therof. Named after the strips of lead which used to be inserted between lines of metal type.
a soft malleable, heavy metal; has low melting point and a high coefficient of thermal expansion.
A chemical element (symbol Pb) that is a soft, dense, bluish-gray metal. Very durable, resistant to corrosion, and malleable. Can combine chemically with other atoms or molecules to make new compounds.
A heavy, bluish-white chemical that can be easily shaped.
The metal from which bullets are traditionally made. They may also be made of steel, copper, or other materials.
1. An electrical wire, which carries current from one point to another in a circuit or to or from a piece of apparatus. 2. The linear distance moved by a threaded object in one rotation. 3. Built-up masonry wall section, from which other courses are stepped back successively. 4. Dense, soft metallic element; atomic symbol Pb, atomic number 82, atomic weight 207.19. This metallic chemical found can be found in paint and plumbing in older dwellings and is a health risk.
A soft heavy gray metal used in solder and other alloys.
Lead is a soft, blue-grey, easily worked heavy metal that is naturally present in rocks and soils. It is used to make some kinds of glass, shot for shotguns, and combined with other metals for use in a variety of metallic items. Lead may be released to the environment by human activities, including the use of leaded-gasoline (in North America, lead was added to gasoline until the 1980s). Lead can be toxic to living things. In animals and people, lead accumulates in the brain and bones.
Lead is a heavy metal that occurs naturally in the environment and is produced from man-made sources. Most exposures to lead come from lead paint and emissions from industrial facilities like metal smelters. Other sources of exposure include crystal tableware, porcelain enamel and contaminated food. Lead is a suspected carcinogen, a known hormone disruptor, and can damage almost every organ and system in the human body, particularly the nervous system. Lead has been indicated as a cause of decreased mental ability, developmental delays, behavioural disorders and reproductive defects.
One of the metals that may be alloyed with tin to create pewter. Romano-British pewter often contains a relatively high lead content, making it fairly soft and heavy. Some British pewter measures of the late 17th and early 18th century can also contain a significant lead content. Because there were no tin mines in the USA, the only source of tin for 18th century American pewterers was scrap English pewter, melted down and adulterated with lead. This is why, generally, most American cast pewter will contain more lead than comparable English pewter. However, modern L.T.P. (London Touch Plate), Britannia, English or American pewter contains no lead by law.
Lead is a heavy metal that has gained a great deal of attention from the EPA, which in 1991 imposed new standards for lead levels in drinking water that are 10 times more protective than levels previously thought to be safe. It is estimated that 40 million Americans currently drink water containing more lead than the limit set by the EPA. Lead poisoning can cause mental retardation adn birth defects. Basic filtration rated for lead reduction will offer protection.
A metal found in natural deposits as ores containing other elements. Sometimes used in household plumbing materials or in water service lines. Exposure to high levels of lead can cause interference with red blood cell chemistry, delays in physical and mental development in babies and young children, slight deficits in the attention span, hearing, and learning abilities of children, and slight increases in the blood pressure of some adults. Long-term exposure can cause a stroke, kidney disease and cancer.
A metallic chemical element present in older dwellings, primarily in the form of lead-based paint and lead plumbing. Exposure to lead has been found to be a health risk.
The metal part of and electronic component used to secure and solder that component in place. - The metric prefix “Mega” (abbreviated “Meg”). The Greek letter “ M ” stands for the number, one million.
Lead was rarely used in manufacture of household items, not because of the danger of lead poisoning, which wasn't understood until the 20th century, but because of the metal's softness. Strangely, and sadly, the most common antiques found made of lead are children's toys. It was long a regular practice to make toy soldiers from lead. This was due to the ease of molding lead and the cheapness of the material. Lead is a dull gray color normally but looks silvery when scratched.
The term for tetraethyl or tetramethyl lead which is sometimes added to gasoline to improve its octane rating.
A very heavy - yet soft, metallic element that is poisonous if ingested. Chemical symbol "Pb" because the Romans used it in their "Plumbing". Many believe that the Roman Empire was slowly poisoned because their drinking water was contaminated by the LEAD plumbing they used. The discovery of LEAD as a slow poison was not discovered until about a century ago. The use of LEAD by humans throughout history has resulted in much discord among families and communities. See SATURNISM and CERUSE.
0.0020.0020.002 0.50 EPA 239.2
a tasteless, odorless water contaminant that may be leached from lead-based solder used to join pipes
The official name for the metal "feet" on an IC. Also called "pins." The part of the lead assembly that is formed after a portion of the lead frame is cut away. The chip's connection to the outside world.
The recommended maximum level is less than 1.015 mg/L. Lead can occur due to corrosion of lead containing household plumbing and by industrial pollution. Major toxic effects include anemia, neurological dysfunction/damage and renal impairment.
A malleable metal once extensively used for flashings.
soft, heavy, blue-gray metallic element which is used to make pipe
A chemical element which belongs to the heavy metals (specific weight 11.341 g/cm³). It is used in the form of bivalent and / or quadrivalent compounds (PbSO4 or PbO2), as porous sponge lead for active masses, and as lead-antimony or lead-calcium alloys for grids in lead batteries.
a soft workable metal used for miscellaneous flashings.
A soft, dense, metallic element. Lead is bluish in color, but tarnishes readily to a dull gray. It is both malleable and ductile and easily fuses with other metals to form alloys. Lead is used in containers, sheets, tubes, pipes, solder, type metal, bullets, radiation shielding, paints, and antiknock compounds.
the Contaminant of Concern at the Tar Creek Superfund Site; a metal that was mined at the site; a metal that can cause health and learning problems.
(pronounced 'led') space added between lines of type to space out text and provide visual separation of the lines. Leading is as important as type size in determining the overall appearance and readability of a text element or column of type. Measured in points or fractions thereof - from the strips of lead that used to be inserted between lines of metal type.
Lead (IPA: ) is a chemical element in the periodic table that has the symbol Pb and atomic number 82. A soft, heavy, toxic and malleable poor metal, lead is bluish white when freshly cut but tarnishes to dull gray when exposed to air. Lead is used in building construction, lead-acid batteries, bullets and shot, and is part of solder, pewter, and fusible alloys.