lead vs led definition
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Led vs. lead Led vs. lead. The verb lead makes led in the past tense and as a past participle. Writers often mistakenly use lead in these roles, perhaps due to erroneous analogy with the verb read, which is uninflected. Lead is of course the correct spelling for the malleable, bluish-white element used in pipes, solder, bullets, and paints. 12 Comments.
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Definitions &Translations lead, pencil lead(noun) mixture of graphite with clay in different degrees of hardness; the marking substance in a pencil. jumper cable, jumper lead, lead, booster cable(noun) a jumper that consists of a short piece of wire. it was a tangle of jumper cables and clip leads. lead(verb) the playing of a card to start a trick in bridge. the lead was in the dummy.
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Led vs. Lead: Whatâs the Difference? What is the Difference Between Led and Lead? The main difference between led and lead is tense. Led is the past tense of lead. She leads the way to prosperity. She led the way to prosperity. One of these examples is happening now (present tense) and the other has already happened (past tense). The problem, however, is that the past tense led is pronounced exactly like lead (a soft, toxic metal).
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What is the difference between lead and led? As verbs the difference between lead and led is that lead is to cover, fill, or affect with lead; as, continuous firing leads the grooves of a rifle or lead can be to guide or conduct with the hand, or by means of some physical contact connection; as, a father leads a child; a jockey leads a horse with a halter; a dog leads a blind man while led is (lead).
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Lead glass Lead glass, commonly called crystal, is a variety of glass in which lead replaces the calcium content of a typical potash glass.
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- A light-emitting diode (LED) is a semiconductor device that creates light using solid-state electronics. A diode is composed of a layer of electron rich material separated by a layer of electron deficient material which forms a junction.
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LED lamp An LED lamp is an electric light or light bulb for use in lighting fixtures that produces light using light-emitting diodes. LED lamps have a lifespan and electrical efficiency which are several times greater than incandescent lamps, and are significantly more efficient than most fluorescent lamps, with some chips able to emit more than 300 lumens per watt. The LED lamp market is projected to grow by more than twelve-fold over the next decade, from $2 billion in the beginning of 2014 to $25 bill
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- 1.1 Technical introduction : Physical function. Like a normal diode, the LED consists of a chip of semiconducting material impregnated, or doped, with impurities to create a p-n junction. As in other diodes, current flows easily from the p-side, or anode, to the n-side, or cathode, but not in the reverse direction.
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- In typography, leading (/ˈlɛdɪŋ/ LED-ing) refers to the distance between the baselines of successive lines of type. The term originated in the days of hand-typesetting, when thin strips of lead were inserted into the forms to increase the vertical distance between lines of type. The term is still used in modern page-layout software such as QuarkXPress and Adobe InDesign.
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lead 1 lead1. 1  to go before or with to show the way; conduct or escort: to lead a group on a cross-country hike. 2  to conduct by holding and guiding: to lead a horse by a rope. 3  to influence or induce; cause: Subsequent events led him to reconsider his position.
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lead Verb: lead (led) leed. 1  Accompany somebody somewhere to show them the way. 2  Have as a result or residue. 3  Tend to or result in.  Travel in front of; go in advance of 1  others. Cause to undertake a certain action.  Stretch out over a distance, space, time, or scope; run or extend between two points or beyond a certain 1  point. Be in charge  of.
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Lead Versus Led Example 5: Lead is often used in fishing weights (“lead” is a noun meaning a type of metal). Definition of “led”. “Led” in most cases is a verb. Example 6: She led the team to victory last week in the championship game (“led” is a verb in past tense form).
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light-emitting diode (LED) A light-emitting diode (LED) is a semiconductor device that emits visible light when an electric current passes through it. A light-emitting diode (LED) is a semiconductor device that emits visible light when an electric current passes through it. WhatIs.com Search Thousands of Tech Definitions
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- Lead Crystal. Lead crystal is made from glass that has been treated with lead oxide and hand or machine cut to make facets. This gives the glass a higher index of refraction and creates an attractive sparkling effect that is prized throughout the world. Englishman George Ravenscroft is credited with discovering lead crystal in 1676.
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What is the difference between LCD and led monitors? LED is a technology used in LCD monitors for improving the energy efficiency of the system. 2nd answer: Also to make the colors and picture sharpness much better. An LCD screen puts out no light. Zero.
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What Does LED Stand For and How Does it Work? LED stands for light emitting diode. A diode is an electrical component with two terminals which conduct the electricity only in one direction. With an electrical current, the diode emits a bright light around the small bulb.
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- Lead is a heavy, soft, bluish-gray metal that occurs naturally in the rocks and soil of the earth's crust. It is also produced from burning fossil fuels such as coal, oil, gasoline, and natural gas; mining; and manufacturing. Lead has no distinctive taste or smell. The chemical symbol for elemental lead is Pb.
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- LEDs are semiconductor diodes, electronic devices that permit current to flow in only one direction. The diode is formed by bringing two slightly different materials together to form a PN junction (Figure 2).
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LED Basics: How to tell which lead is positive or negative If the LED has two leads with leads that are equal in length, you can look at the metal plate inside the LED. The smaller plate indicates the positive (anode) lead; the larger plate belongs to the negative (cathode) lead. Unfortunately, some jumbo LEDS have the plates reversed so this is not a fool-proof method. If the LED has a flat area (on the plastic housing), the lead adjacent to the flat area is the negative (cathode) lead. It’s a little bit harder to determine the polarity with Surface Mount LEDS. Some are marked with a (-) to indicate the negative lead, but often, they are not.
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LED buying guide Light-emitting diodes, or LEDs, are the new rock stars of the bulb world. When an LED is switched on, electrons and electron holes come together (and don't worry, I'm not completely sure I fully understand what a hole is in this context, either).
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Occupational Safety and Health Administration Inorganic lead is a malleable, blue-gray, heavy metal that occurs naturally in the Earth’s crust. Lead was one of the first metals used by humans and consequently, the cause of the first recorded occupational disease (lead colic in a 4th century BC metal worker). In 2012, U.S. production of lead was estimated at 1.6 million metric tons; primarily from secondary refining of scrap metal.
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Lead - Pb Lead: the essentials. Lead is a bluish-white lustrous metal. It is very soft, highly malleable, ductile, and a relatively poor conductor of electricity. It is very resistant to corrosion but tarnishes upon exposure to air. Lead pipes bearing the insignia of Roman emperors, used as drains from the baths, are still in service. Alloys include pewter and solder. Tetraethyl lead (PbEt 4) is still used in some grades of petrol (gasoline) but is being phased out on environmental grounds.
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- Background. Lead is a dense, soft, low-melting metal. It is an important component of batteries, and about 75% of the world's lead production is consumed by the battery industry. Lead is the densest common metal except for gold, and this quality makes it effective in sound barriers and as a shield against X-rays.ead is used to make bearings and solder, and it is important in rubber production and oil refining. Lead production dates back at least 8,000 years. Lead was used in Egypt as early as 5,000. , and in the time of the Pharaohs it was used in pottery glazes and as solder.
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- Lead and Copper Rule. The Lead and Copper Rule (LCR) is a United States federal regulation which limits the concentration of lead and copper allowed in public drinking water at the consumer's tap, as well as limiting the permissible amount of pipe corrosion occurring due to the water itself.
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lead lead (countable and uncountable, plural leads) ( 1 uncountable) A heavy, pliable, inelastic metal element, having a bright, bluish color, but easily tarnished; both malleable and ductile, though with little tenacity. It is easily fusible, forms alloys with other metals, and is an ingredient of solder and type metal. Atomic number 82, symbol Pb (from Latin plumbum). (countable) A plummet or mass of lead attached to a line, used in sounding depth at sea or (dated) to estimate velocity in knots. A thin strip of type metal, used to separate lines of type in printing. (uncountable, typography) Vertical space in advance of a row or between rows of text.
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Lead Lead is a chemical element that is assigned the symbol Pb (from the Latin plumbum) and the atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and has a relatively low melting point.