By using our services, you agree to our use of cookies. electricity and gas, and gasoline dispensers) inspected and more than 400, prototype measuring instruments evaluated, surface, comprising a boroxine-linked or a boronate-linked network and has a two dimensional nano-, Materials patterned at the nanometer - one billionth of a. , such as quantum dots, nanocrystals and photonic crystals. Therefore, multi-range ohmmeters having different mid-scale resistances values are desirable. To use a postage scale effectively, a business should keep an ample supply of postage stamps on hand. In Minnesota, a commercial scale or meter is defined as any scale or meter used to buy or sell commodities or services for which the price is determined by the measurement on that device. A decibel meter is used for acoustic measurements. , farm tanks etc.) Utility-scale electricity needs to get to end consumers via the transmission and distribution system, which means that this system is also a front-of-meter energy setup. The human ear has the ability to handle an immense range of different sound levels. Its symbol is ‘dB’. In fact, loud noise can actually damage our hearing. ProScan. A 1 to 14 scale that measures alkalinity or acidity: pH7 is neutral, below 7 is acid and above 7 is alkaline. Using a postage scale with a meter allows a business to take care of every step of the mailing process in the office, rather than obliging the business to send someone to the post office to put postage on the mail. Be it an analog coil-actuated meter, a digital ADC, or even a DAC (though it is used to mean the output range available, not measurement), full scale is now used to mean the complete minimum to maximum range of something. The metric scale is the system of measurement used in the metric system. Required fields are marked *. Durometer definition is - an instrument for measuring hardness. How to pronounce meter (audio) \. It measures and samples sound. Cookies help us deliver our services. A noise level chart showing examples of sounds with dB levels ranging from 0 to 120 decibels is given below. Your email address will not be published. Found 705 sentences matching phrase "meter-scale".Found in 20 ms. In addition to specific gravity, other scales may be used, such as API gravity for petroleum, Plato scale for brewing, Baume scale for chemistry, and Brix scale for wineries and fruit juices. Define pH scale. In this, the reference pressure in air is set as the threshold value of perception of a human. Nonetheless, it was decided that the meter would remain as realized in the platinum bar. Yet, the nanotechnology revolution allows us to act precisely on that billionth of a, Microfluidic devices and methods for operations on micro through nano-, This period caused significant foliation and. In pure water, which is neutral (neither acidic nor alkaline), the concentration of the hydrogen ion is 10 −7 gram-equivalents per litre, which corresponds to a pH of 7. In acoustic, a diaphragm is a transducer intended to interconvert mechanical vibrations to sounds, or vice versa. Decibel meters are also known as sound-level meters. A new unit of length, the metre was introduced – defined as one ten-millionth of the shortest distance from the North Pole to the equator passing through Paris, assuming an Earth's flattening of 1/334. Metric definition, pertaining to the meter or to the metric system. A typical sound-level meter can be switched between a scale that reads sound intensities uniformly for most frequencies—called unweighted—and a scale that introduces a frequency-dependent weighting factor, thus yielding a response more nearly like that of the human ear. Millimeter definition, a unit of length equal to one thousandth of a meter and equivalent to 0.03937 inch. Your email address will not be published. Formulas to Calculate DecibelDecibel Meter DefinitionDecibel Meter UsesDecibel Scale Definition. See more. Medical Author: William C. Shiel Jr., MD, FACP, FACR; pH meter: A simple and speedy device to measure the acidity and alkalinity of a fluid. You May Also Read: Megohmmeter Working Principle One decibel is one-tenth of one bel, a unit name named in honour of Alexander Graham Bell. The term, widely used in chemistry, biology, and agronomy, translates the values of the concentration of the hydrogen ion —which ordinarily ranges between about 1 and 10 −14 gram-equivalents per litre—into numbers between 0 and 14. The calculation of decibel can be done when power is given as well a when current and voltage are given. We've mostly dropped the deflection part however, as deflection is rarely relevant anymore. Title: Time Line for the Definition of the Meter Author: William B. Penzes Created Date: 12/16/2010 3:20:18 PM So, the intensity of a sound is measured using decibel. If you wish to learn more physics concepts with the help of interactive video lessons, download BYJU’S – The Learning App. pH scale synonyms, pH scale pronunciation, pH scale translation, English dictionary definition of pH scale. To ensure that it is the same meter used everywhere, the standard meter was defined by scientists as below: Definitions of the meter (1798) – A voltmeter is an instrument used for measuring electric potential difference between two points in an electric circuit. A hydrometer or hydroscope is a device that measures the relative densities of two liquids.They are typically calibrated to measure the specific gravity of a liquid. However, it was soon discovered that the length of a seconds pendulum varies from place to place: French astronomer Jean Richer had measured the 0.3% difference in length between Cayenne (in French Guiana) and Paris. See more. For practical purposes however, the standard metre was made available in … You may also notice the markings in between each centimeter on the ruler. An ammeter (from ampere meter) is a measuring instrument used to measure the current in a circuit.Electric currents are measured in amperes (A), hence the name. ter | \ ˈmē-tər. Durometer definition, a device for measuring the hardness of materials, especially metals. In 1671 Jean Picard measured the length of a "seconds pendulum" (a pendulum with a period of two seconds) at the Paris observatory. The device consists essentially of a weighted, sealed, long-necked glass bulb that is immersed in the liquid being As time passed, more and more European countries adopted the French meter as their length standard. Abbreviation: nm See more. The sound is all around us and can be measured to protect and inform us, as some sounds are not safe. Accurately track fitness and weight goals with scales from basic weight measurement to analyzing BMI, hydration, calorie intake, and more. Definition of meter (Entry 3 of 6) : the base unit of length in the International System of Units that is equal to the distance traveled by light in a vacuum in ¹/₂₉₉,₇₉₂,₄₅₈ second or to about 39.37 … folding in the faux-amphibolite and banded iron formations. This unit ‘, This is another reason why this instrument is also referred to as a, When constant pressure is applied, a microphone can be traced by the voltage produced, called the, This instrument is usually used to measure noise and serves as a level meter. Micro-ohmmeters (microhmmeter or micro ohmmeter) make low resistance measurements. The most basic form for decibel calculations as given below: You may also want to check out these topics given below! The decibel (dB) is a unit used to express the ratio of two values of a physical quantity, often power or intensity. It is used as a unit of sound pressure level. Measure of the ability of a solution containing electrolytes to conduct electricity. Recent Examples on the Web The scientists found four distinct layers, each a few centimeters thick, of brownish, millimeter-scale crystals. This scale is called the decibel scale or dB scale.

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