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Power line adapter. Power-line communication (PLC) is the carrying of data on a conductor that is also used simultaneously for AC electric power transmission or electric power distribution to consumers. The line that does so is known as a power-line carrier.. In the past, power lines were solely used for transmitting electricity. However, with the introduction of advanced networking ...Laser rangefinder. A long-range laser rangefinder is capable of measuring distance up to 20 km; mounted on a tripod with an angular mount. The resulting system also provides azimuth and elevation measurements. A laser rangefinder, also known as a laser telemeter, is a rangefinder that uses a laser beam to determine the distance to an object.A long distance race is any running event on the track that is longer than 3000m. This includes such events as the 3000m run, the 3000m steeplechase, the 3200m run, the two mile run, the three mile run, 5000m run, five mile run, six mile run, and 10000m run, and so on. The original marathon race, created in 1896, paid tribute to the legendary ...In electromagnetism, charge density is the amount of electric charge per unit length, surface area, or volume. Volume charge density (symbolized by the Greek letter ρ) is the quantity of charge per unit volume, measured in the SI system in coulombs per cubic meter (C⋅m −3), at any point in a volume. Surface charge density (σ) is the quantity of charge per unit area, measured in coulombs ...Total station merupakan teodolit terintegrasi dengan komponen pengukur jarak elektronik ( electronic distance meter (EDM)) untuk membaca jarak dan kemiringan dari instrumen …The classical electron radius is sometimes known as the Lorentz radius or the Thomson scattering length. It is one of a trio of related scales of length, the other two being the Bohr radius and the reduced Compton wavelength of the electron ƛe. Any one of these three length scales can be written in terms of any other using the fine-structure ...Electrostatic discharge (ESD) is a sudden and momentary flow of electric current between two differently-charged objects when brought close together or when the dielectric between them breaks down, often creating a visible spark associated with the static electricity between the objects.. ESD can create spectacular electric sparks (lightning, with the accompanying sound of thunder, is an ...An optical fiber patching cabinet. The yellow cables are single mode fibers; the orange and blue cables are multi-mode fibers: 62.5/125 μm OM1 and 50/125 μm OM3 fibers, respectively. Stealth Communications fiber crew installing a 432-count dark fiber cable underneath the streets of Midtown Manhattan, New York City. Fiber-optic communication is a method of transmitting information from one ...A grounding resistance tester also called an earth tester is a soil resistance measuring instrument. It is used for sizing and projecting grounding grids. [1] The first soil resistance measuring instrument was invented in the 1950s by Evershed & Vignoles Meggers who made the first insulation and earth resistance testers. [2]Thermal resistivity. The thermal conductivity of a material is a measure of its ability to conduct heat. It is commonly denoted by , , or and is measured in W·m −1 ·K −1 . Heat transfer occurs at a lower rate in materials of low thermal conductivity than in materials of high thermal conductivity.Electronic harassment, electromagnetic torture, or psychotronic torture is the delusional belief that malicious actors (often government agents or crime rings) make use of electromagnetic radiation (such as the microwave auditory effect), radar, and surveillance techniques to transmit sounds and thoughts into people's heads, affect people's bodies, and harass people.4 Basic Working Principles of Electronic Distance Meters EDM instruments are classified according to the type of carrier wave employed. Instruments using light or IR waves are classified as electro-optical instruments. Instruments based on radio waves are generally called microwave instruments. Because of the different structure of these two types of instruments, they will beDT20 Digital Laser Tape Measure with Bluetooth. $69.99 USD $89.99 USD. Mileseey S2 Outdoor Laser Measure Tool with Camera Viewfinder and Bluetooth. Sale.A digital sensor is an electronic or electrochemical sensor, where data is digitally converted and transmitted. Sensors are often used for analytical measurements, e.g. the measurement of chemical and physical properties of liquids. Examples of measured parameters are pH value, conductivity, oxygen, redox potentials.Such measurements are used in the industrialized world and give vital input ...Electromagnetic interference ( EMI ), also called radio-frequency interference ( RFI) when in the radio frequency spectrum, is a disturbance generated by an external source that affects an electrical circuit by electromagnetic induction, electrostatic coupling, or conduction. [1] The disturbance may degrade the performance of the circuit or ...Electromagnetic radiation phenomena with wavelengths ranging from as long as one meter to as short as one millimeter are called microwaves; with frequencies between 300 MHz (0.3 GHz) and 300 GHz. At radio and microwave frequencies, EMR interacts with matter largely as a bulk collection of charges which are spread out over large numbers of ...An electronic distance measuring instrument is a surveying instrument for measuring distance electronically between two points through electromagnetic waves. …Total station or total station theodolite is an electronic or optical instrument used in modern surveying and building construction. It is an electronic theodolite built-in with a electronic distance meter (EDM) to read the slope distance from the instrument at a specific level.In this paper, an indoor baseline is designed and then accurately measured using femtosecond laser pulses from an optical frequency comb to be used for EDM calibration. The baseline consists of 13 fixed bases that cover 58 m distance. In order to accurately measure the distances between the bases, autocorrelation between femtosecond laser ...Odometer. An electronic odometer (below speedometer) with digital display showing 91,308 miles (146,946 km) from a Jeep Grand Cherokee (WJ) An odometer or odograph is an instrument used for measuring the distance traveled by a vehicle, such as a bicycle or car. The device may be electronic, mechanical, or a combination of the two ...Total station or total station theodolite is an electronic or optical instrument used in modern surveying and building construction. It is an electronic theodolite built-in with a electronic distance meter (EDM) to read the slope distance from the instrument at a specific level.

Use a laser to determine the distance to an object up to 700 yards away. A target plate (sold separately) is required for measuring distances over 150 ft., and uneven, transparent, and mirrored surfaces. Styles A-D show distance on a digital display. Style D has a touch screen with up to 4X magnification.The main instrument for measuring sound levels in the environment is the sound level meter. Most sound level meters provide readings in A, C, and Z-weighted decibels and must meet international standards such as IEC 61672-2013. Examples. The lower limit of audibility is defined as SPL of 0 dB, but the upper limit is not as clearly defined.Follow us on :Instagram:https://www.instagram.com/civil_engineering_ce/If you find this video useful please press the like button and share with your friends...In aviation, a variometer - also known as a rate of climb and descent indicator (RCDI), rate-of-climb indicator, vertical speed indicator (VSI), or vertical velocity indicator (VVI) - is one of the flight instruments in an aircraft used to inform the pilot of the rate of descent or climb. It can be calibrated in metres per second, feet per minute (1 ft/min = 0.00508 m/s) or knots (1 kn ≈ ...

Conductivity or specific conductance of an electrolyte solution is a measure of its ability to conduct electricity. The SI unit of conductivity is siemens per meter (S/m). Conductivity measurements are used routinely in many industrial and environmental applications as a fast, inexpensive and reliable way of measuring the ionic content in a ...Category: Electronic Distance Meters. Add to Compare Product limit reached. Please remove a product from your comparison list to add this item. Sign In For Price. STANLEY BLACK & DECKER. Laser Distance Measurer, 100 ft., WxH: 4.72 x 7.87 in. MFR #: DWHT77100-CN Part #: DWT-DWHT77100-CN .…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Pupilometer. Pupillometer, also spelled pupilometer, is a medical de. Possible cause: Planning for a long-distance move? Read our guide to learn about the pros, cons, and co.