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An artesian well is a well that brings groundwater to the surface without pumping because it is under pressure within a body of rock and/or sediment known as an aquifer. When trapped water in an aquifer is surrounded by layers of impermeable rock or clay, which apply positive pressure to the water, it is known as an artesian aquifer. If a well were to be sunk into an artesian aquifer, water in the well-pipe would rise to a height corresponding to the point where hydrostatic equilibrium is reached
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Baptist well drilling is a very simple, manual method to drill water wells. The Baptist drilling rig can be built in any ordinary arc welding workshop and materials for a basic version costs about 150 US dollars (2006 prices). In suitable conditions, boreholes over 100 m deep have been drilled with this method
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Barnet Common was an area of common land to the south of the town of Chipping Barnet in what is now north London. The Common was created after a wood was cleared in the 16th century and was mostly used by local people to graze their animals. It was the location of a Digger colony and of the Barnet Physic Well at which mineral water was consumed
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A castle well was a water well built to supply drinking water to a castle. It was often the most costly and time-consuming element in the building of a castle, and its construction time could span decades.
The well – as well as any available cisterns – provided a protected source of drinking water for the castle garrison in peace and war and also for any civil population seeking refuge during a siege
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In hydrology, there are two similar but distinct definitions in use for the word drawdown:
In subsurface hydrogeology, drawdown is the reduction in hydraulic head observed at a well in an aquifer, typically due to pumping a well as part of an aquifer test or well test.
In surface water hydrology and civil engineering, drawdown refers to the lowering of the surface elevation of a body of water, the water table, the piezometric surface, or the water surface of a well, as a result of the withdrawal of water. In either case, drawdown is the change in hydraulic head or water level relative to the initial spatial and temporal conditions of the system
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Well drilling is the process of drilling a hole in the ground for the extraction of a natural resource such as ground water, brine, natural gas, or petroleum, for the injection of a fluid from surface to a subsurface reservoir or for subsurface formations evaluation or monitoring. Drilling for the exploration of the nature of the material underground (for instance in search of metallic ore) is best described as borehole drilling.
The earliest wells were water wells, shallow pits dug by hand in regions where the water table approached the surface, usually with masonry or wooden walls lining the interior to prevent collapse
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Among Eastern Orthodox and Eastern-Rite Catholic Christians, holy water is blessed in the church and given to the faithful to drink at home when needed and to bless their homes. In the weeks following the Feast of Epiphany, clergy visit the homes of parishioners and conduct a service of blessing by using the holy water that was blessed on the Feast of Theophany. For baptism, the water is sanctified with a special blessing
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Hydraulic head or piezometric head is a specific measurement of liquid pressure above a vertical datum. It is usually measured as a liquid surface elevation, expressed in units of length, at the entrance (or bottom) of a piezometer. In an aquifer, it can be calculated from the depth to water in a piezometric well (a specialized water well), and given information of the piezometer's elevation and screen depth
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Multilevel Groundwater Monitoring Systems, also referred to as Multi-Depth Groundwater Monitoring Systems, Multilevel Systems (MLSs), or Engineered Nested Wells, are engineered technologies installed in single boreholes above and/or below the water table to obtain data from different depth intervals. The technologies may consist of various pipes, liners, access ports, sampling pumps, pressure sensors, and sealing mechanisms that are installed temporarily or permanently in boreholes drilled into unconsolidated sediments or bedrock.
MLS systems facilitate 1) ongoing measurement and monitoring of depth-discrete water pressures (hydraulic heads) and 2) repeated collection of depth-discrete groundwater samples for chemical testing
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Nested wells, also referred to as nested monitoring wells, are composed of multiple tubes or pipes, typically terminating with short screened intervals (2–3 ft), installed in single boreholes. Sand packs must be installed at the screen depths and seals in the borehole are constructed between the sand packs. Nested wells are different from well clusters in that the latter consists of a cluster of wells where tubes or pipes are constructed in separate, individual boreholes that are drilled and completed at different depths
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A Persian well is a type of water well found in the Middle East, often used in conjunction with a qanat. These wells feature an ox-driven pump where the ox walks in circles around a central drive shaft which turns a wheel that raises water via a chain of buckets from the qanat or a well. In some cases, water flows fast enough that a subterranean waterwheel may harness enough power to raise the buckets of water to the surface level
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A petrifying well is a well or other body of water which gives objects a stone-like appearance. If an object is placed into such a well and left there for a period of months or years, the object acquires a stony exterior.
Nature
If an object is placed into such a well and left there for a period of weeks or months the object acquires a stony exterior
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The Royal Spring (Zdrój Królewski) is a well located in Romuald Traugutt Park on Zakroczymska Street in Warsaw. The spring's building was built in the 18th century, with construction beginning in 1770. It is also called the King Stanislaus Augustus Spring
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In hydrogeology, a slug test is a particular type of aquifer test where water is quickly added or removed from a groundwater well, and the change in hydraulic head is monitored through time, to determine the near-well aquifer characteristics. It is a method used by hydrogeologists and civil engineers to determine the transmissivity/hydraulic conductivity and storativity of the material the well is completed in.
Method
The "slug" of water can either be added to or removed from the well — the only requirement is that it be done as quickly as possible (the interpretation typically assumes instantaneously), then the water level or pressure is monitored
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A tube well is a type of water well in which a long, 100–200 millimetres (3. 9–7. 9 in)-wide, stainless steel tube or pipe is bored underground
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A well cluster, also referred to as a monitoring well cluster, consists of multiple co-located monitoring wells that are constructed with intakes (well screens) at different depths in the subsurface. The purpose of a well cluster is to provide groundwater samples from discrete depths at approximately the same location, and/or to measure the vertical pressure gradient to calculate the vertical component of groundwater flow. Water levels can be measured in each individual monitoring well, providing vertical profiles of groundwater pressure (hydraulic head)
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Well dressing, also known as well flowering, is a tradition practised in some parts of rural England in which wells, springs and other water sources are decorated with designs created from flower petals. The custom is most closely associated with the Peak District of Derbyshire and Staffordshire. James Murray Mackinlay, writing in 1893, noted that the tradition was not observed in Scotland; W
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In hydrology, a well test is conducted to evaluate the amount of water that can be pumped from a particular water well. More specifically, a well test will allow prediction of the maximum rate at which water can be pumped from a well, and the distance that the water level in the well will fall for a given pumping rate and duration of pumping.
Well testing differs from aquifer testing in that the behaviour of the well is primarily of concern in the former, while the characteristics of the aquifer (the geological formation or unit that supplies water to the well) are quantified in the latter
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Wellman (Croatian: Bunarman) is a Croatian documentary film directed by Branko Ištvančić. It was released in 2003. The title is a play on superhero names like Superman and Batman
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A wishing well is a term from European folklore to describe wells where it was thought that any spoken wish would be granted. The idea that a wish would be granted came from the notion that water housed deities or had been placed there as a gift from the gods. This practice is thought to have arisen because water is a source of life, and was often a scarce commodity
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A combat engineer (also called pioneer or sapper) is a type of soldier who performs military engineering tasks in support of land forces combat operations. Combat engineers perform a variety of military engineering, tunnel and mine warfare tasks, as well as construction and demolition duties in and out of combat zones. Combat engineers facilitate the mobility of friendly forces while impeding that of the enemy
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A self-driving car, also known as an autonomous car, driverless car, or robotic car (robo-car), is a car that is capable of traveling without human input. Self-driving cars use sensors to perceive their surroundings, such as optical and thermographic cameras, radar, lidar, ultrasound/sonar, GPS, odometry and inertial measurement units. Control systems interpret sensory information to create a three-dimensional model of the vehicle's surroundings
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In legal terminology, the assured clear distance ahead (ACDA) is the distance ahead of any terrestrial locomotive device such as a land vehicle, typically an automobile, or watercraft, within which they should be able to bring the device to a halt. It is one of the most fundamental principles governing ordinary care and the duty of care for all methods of conveyance, and is frequently used to determine if a driver is in proper control and is a nearly universally implicit consideration in vehicular accident liability. The rule is a precautionary trivial burden required to avert the great probable gravity of precious life loss and momentous damage
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Automatic parking is an autonomous car-maneuvering system that moves a vehicle from a traffic lane into a parking spot to perform parallel, perpendicular, or angle parking. The automatic parking system aims to enhance the comfort and safety of driving in constrained environments where much attention and experience is required to steer the car. The parking maneuver is achieved by means of coordinated control of the steering angle and speed which takes into account the actual situation in the environment to ensure collision-free motion within the available space
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Autonomous mobility on demand (AMoD) is a service consisting of a fleet of autonomous vehicles used for one-way passenger mobility. An AMoD fleet operates in a specific and limited environment, such as a city or a rural area.
Origin
Mobility on demand (MoD)
The idea of developing a form of passengers transportation based on shared vehicles rather than private cars comes from the research in the field of sustainable mobility, which aims at creating an efficient and environmentally-friendly way for people to move
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Autonomous racing, self-driving racing or autonomous motorsports is an evolving sport of racing ground-based wheeled vehicles, controlled by computer. A number of events and series have launched, including the international Formula E spin-off series Roborace. and Self Racing Cars as well as student competitions such as Formula Student Driverless
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An electronic control unit (ECU), also known as an electronic control module (ECM), is an embedded system in automotive electronics that controls one or more of the electrical systems or subsystems in a car or other motor vehicle.
Modern vehicles have many ECUs, and these can include some or all of the following: engine control module (ECM), powertrain control module (PCM), transmission control module (TCM), brake control module (BCM or EBCM), central control module (CCM), central timing module (CTM), general electronic module (GEM), body control module (BCM), and suspension control module (SCM). These ECUs together are sometimes referred to collectively as the car's computer though technically they are all separate computers, not a single one
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The impact of self-driving cars is anticipated to be wide-ranging on many areas of daily life. Self-driving cars have been the subject of significant research on their environmental, practical, and lifestyle consequences.
One significant predicted impact of self-driving cars is a substantial reduction in traffic collisions and resulting severe injuries or deaths
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In transportation, platooning or flocking is a method for driving a group of vehicles together. It is meant to increase the capacity of roads via an automated highway system. Platoons decrease the distances between cars or trucks using electronic, and possibly mechanical, coupling
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Regulation of self-driving cars is an increasingly relevant topic in the automotive industry strongly related to the success of the actual technology. Multiple countries have passed legislation and agreed on standards for the introduction of autonomous cars.
Liability
Self-driving car liability is a developing area of law and policy that will determine who is liable when an automated car causes physical damage to persons, or breaks road rules
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Increases in the use of autonomous car technologies (e. g. , advanced driver-assistance systems) are causing incremental shifts in the responsibility of driving, with the primary motivation of reducing the frequency of traffic collisions
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A self-driving truck, also known as an autonomous truck or robo-truck, is an application of self-driving technology aiming to create trucks that can operate without human input. Alongside light, medium, and heavy-duty trucks, many companies are developing self-driving technology in semi trucks to automate highway driving in the delivery process. In September 2022, Guidehouse Insights listed Waymo, Aurora, TuSimple, Gatik, PlusAI, Kodiak Robotics, Daimler Truck, Einride, Locomation, and Embark as the top 10 vendors in automated trucking
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The tunnel problem is a philosophical thought experiment first introduced by Jason Millar. It is a variation on the classic trolley problem designed to focus on the ethics of autonomous vehicles, as well as the question of who gets to decide how they react in life-and-death scenarios.
Original formulation
The tunnel problem is intended to draw one's attention to a specific issue in design/engineering ethics, and was first presented as follows:
Tunnel Problem: You are travelling along a single lane mountain road in an autonomous car that is fast approaching a narrow tunnel
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Vehicle infrastructure integration (VII) is an initiative fostering research and application development for a series of technologies directly linking road vehicles to their physical surroundings, first and foremost in order to improve road safety. The technology draws on several disciplines, including transport engineering, electrical engineering, automotive engineering, and computer science. VII specifically covers road transport, although similar technologies are in place or under development for other modes of transport
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Automation in construction is the combination of methods, processes, and systems that allow for greater machine autonomy in construction activities. Construction automation may have multiple goals, including but not limited to, reducing jobsite injuries, decreasing activity completion times, and assisting with quality control and quality assurance. Some systems may be fielded as a direct response to increasing skilled labor shortages in some countries
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Autonomous Rail Rapid Transit (ART) is a lidar (light detection and ranging) guided articulated bus system for urban passenger transport. Developed by CRRC Zhuzhou Institute Co Ltd, it was unveiled in Zhuzhou in the Hunan province on June 2, 2017. ART has been described as a combination between a bus and a tram - often called a "trackless tram"
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The EasyMile EZ10 is a battery-powered autonomous electric bus designed and marketed by EasyMile. It seats up to six people and four more passengers may ride standing, or it can accommodate a wheelchair, with the aim of helping to bridge the first mile/last mile of a trip. EZ10 has been deployed in more than 30 cities and 16 countries
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openpilot is an open source, semi-automated driving system developed by comma. ai. openpilot operates as a replacement for OEM advanced driver-assistance systems with the objective of improving visual perception and electromechanical actuator control
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The ParkShuttle is an electrically-driven, autonomous shuttle service that runs between Kralingse Zoom metro station in Rotterdam to the Rivium business park in Capelle aan den IJssel. The system first opened 1999 and has been extended since. It has three stops in Rivium (at the 4th, 2nd and 1st streets), a stop Fascinatio (serving the residential area in Capelle aan den IJssel and the Brainpark III business park) and finally at Kralingse Zoom metro station
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Roborace was a competition with autonomously driving, electrically powered vehicles. Founded in 2015 by Denis Sverdlov, it aimed to be the first global championship for autonomous cars. From 2017 to 2019, the official CEO was 2016–17 Formula E champion, Lucas Di Grassi, who later became a member of Roborace’s supervisory board
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Biological engineering or
bioengineering is the application of principles of biology and the tools of engineering to create usable, tangible, economically viable products. Biological engineering employs knowledge and expertise from a number of pure and applied sciences, such as mass and heat transfer, kinetics, biocatalysts, biomechanics, bioinformatics, separation and purification processes, bioreactor design, surface science, fluid mechanics, thermodynamics, and polymer science. It is used in the design of medical devices, diagnostic equipment, biocompatible materials, renewable energy, ecological engineering, agricultural engineering, process engineering and catalysis, and other areas that improve the living standards of societies
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Biomedical engineering (BME) or medical engineering is the application of engineering principles and design concepts to medicine and biology for healthcare purposes (e. g. , diagnostic or therapeutic)
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Bioinspiration is the development of novel materials, devices, and structures inspired by solutions found in biological evolution and refinement which has occurred over millions of years. The goal is to improve modeling and simulation of the biological system to attain a better understanding of nature's critical structural features, such as a wing, for use in future bioinspired designs. Bioinspiration differs from biomimicry in that the latter aims to precisely replicate the designs of biological materials
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Bio-inspired computing, short for biologically inspired computing, is a field of study which seeks to solve computer science problems using models of biology. It relates to connectionism, social behavior, and emergence. Within computer science, bio-inspired computing relates to artificial intelligence and machine learning
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Bio-inspired photonics or bio-inspired optical materials are the application of biomimicry (the use of natural models, systems, and elements for human innovations) to the field of photonics (the science and application of light generation, detection, and manipulation). This differs slightly from biophotonics which is the study and manipulation of light to observe its interactions with biology. One area that inspiration may be drawn from is structural color, which allows color to appear as a result of the detailed material structure
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Bio-inspired robotic locomotion is a fairly new subcategory of bio-inspired design. It is about learning concepts from nature and applying them to the design of real-world engineered systems. More specifically, this field is about making robots that are inspired by biological systems, including Biomimicry
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Bionics or biologically inspired engineering is the application of biological methods and systems found in nature to the study and design engineering systems and modern technology. The word bionic, coined by Jack E. Steele in August 1958, is a portmanteau from biology and electronics which was popularized by the 1970s U
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Annual Review of Biomedical Engineering is an academic journal published by Annual Reviews. In publication since 1999, this journal covers the significant developments in the broad field of biomedical engineering with an annual volume of review articles. It is edited by Martin L
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Automated insulin delivery systems are automated (or semi-automated) systems designed to assist people with insulin-requiring diabetes, by automatically adjusting insulin delivery in response to blood glucose levels. Currently available systems (as of October 2020) can only deliver (and regulate delivery of) a single hormone—insulin. Other systems currently in development aim to improve on current systems by adding one or more additional hormones that can be delivered as needed, providing something closer to the endocrine functionality of the pancreas
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A Bachelor of Science in Biomedical Engineering is a kind of bachelor's degree typically conferred after a four-year undergraduate course of study in biomedical engineering (BME). The degree itself is largely equivalent to a Bachelor of Science and many institutions conferring degrees in the fields of biomedical engineering and bioengineering do not append the field to the degree itself. Courses of study in BME are also extremely diverse as the field itself is relatively new and developing
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Computational anatomy (CA) is a discipline within medical imaging focusing on the study of anatomical shape and form at the visible or gross anatomical scale of morphology.
The field is broadly defined and includes foundations in anatomy, applied mathematics and pure mathematics, including medical imaging, neuroscience, physics, probability, and statistics. It focuses on the anatomical structures being imaged, rather than the medical imaging devices
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Group actions are central to Riemannian geometry and defining orbits (control theory).
The orbits of computational anatomy consist of anatomical shapes and medical images; the anatomical shapes are submanifolds of differential geometry consisting of points, curves, surfaces and subvolumes,.
This generalized the ideas of the more familiar orbits of linear algebra which are linear vector spaces
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Bio-MEMS is an abbreviation for biomedical (or biological) microelectromechanical systems. Bio-MEMS have considerable overlap, and is sometimes considered synonymous, with lab-on-a-chip (LOC) and micro total analysis systems (μTAS). Bio-MEMS is typically more focused on mechanical parts and microfabrication technologies made suitable for biological applications
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Bioceramics and bioglasses are ceramic materials that are biocompatible. Bioceramics are an important subset of biomaterials. Bioceramics range in biocompatibility from the ceramic oxides, which are inert in the body, to the other extreme of resorbable materials, which are eventually replaced by the body after they have assisted repair
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Biomimetic materials are materials developed using inspiration from nature. This may be useful in the design of composite materials. Natural structures have inspired and innovated human creations
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Biotelemetry (or medical telemetry) involves the application of telemetry in biology, medicine, and other health care to remotely monitor various vital signs of ambulatory patients.
Application
The most common usage for biotelemetry is in dedicated cardiac care telemetry units or step-down units in hospitals. Although virtually any physiological signal could be transmitted, application is typically limited to cardiac monitoring and SpO2
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Cardiac Pacemakers, Inc. (CPI), doing business as Guidant Cardiac Rhythm Management, manufactured implantable cardiac rhythm management devices, such as pacemakers and defibrillators. It sold microprocessor-controlled insulin pumps and equipment to regulate heart rhythm
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The Cardiovascular System Dynamics Society (CSDS), founded on 5 October 1976 in Philadelphia, Pennsylvania, by organ system physiologist and biomedical engineers, was a historic first in its mathematical and quantitative approach to cardiovascular mechanics.
Organisation
Currently the society includes investigators in muscle and vascular biology, subcellular and sarcomere dynamics, the microcirculation, cardiovascular biology, clinical disease, and modeling. The primary theme remains cardiovascular function, its physiologic and molecular mechanisms, with an aim to understand how these features integrate to achieve overall performance
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Cell encapsulation is a possible solution to graft rejection in tissue engineering applications. Cell microencapsulation technology involves immobilization of cells within a polymeric semi-permeable membrane. It permits the bidirectional diffusion of molecules such as the influx of oxygen, nutrients, growth factors etc
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Computational anatomy is an interdisciplinary field of biology focused on quantitative investigation and modelling of anatomical shapes variability. It involves the development and application of mathematical, statistical and data-analytical methods for modelling and simulation of biological structures.
The field is broadly defined and includes foundations in anatomy, applied mathematics and pure mathematics, machine learning, computational mechanics, computational science, biological imaging, neuroscience, physics, probability, and statistics; it also has strong connections with fluid mechanics and geometric mechanics
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Directed differentiation is a bioengineering methodology at the interface of stem cell biology, developmental biology and tissue engineering. It is essentially harnessing the potential of stem cells by constraining their differentiation in vitro toward a specific cell type or tissue of interest. Stem cells are by definition pluripotent, able to differentiate into several cell types such as neurons, cardiomyocytes, hepatocytes, etc
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E-NABLE is a distributed, Open Source community that creates and shares open source designs for assistive devices. It is known for creating the first 3D printable prosthetic hand and sharing the designs and code for bioelectric limbs.
History
In 2011, Ivan Owen created a metal, functional puppet hand for a Steampunk costume
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Acellular dermis is a type of biomaterial derived from processing human or animal tissues to remove cells and retain portions of the extracellular matrix (ECM). These materials are typically cell-free, distinguishing them from classical allografts and xenografts, can be integrated or incorporated into the body, and have been FDA approved for human use for more than 10 years in a wide range of clinical indications.
Harvesting and processing
All ECM samples originate from mammalian tissues, such as dermis, pericardium, and small intestinal submucosa (SIS)
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Elementary modes may be considered minimal realizable flow patterns through a biochemical network that can sustain a steady state. This means that elementary modes cannot be decomposed further into simpler pathways. All possible flows through a network can be constructed from linear combinations of the elementary modes
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Ending Aging: The Rejuvenation Breakthroughs that Could Reverse Human Aging in Our Lifetime is a 2007 book written by biogerontologist Aubrey de Grey, with his research assistant Michael Rae. Ending Aging describes de Grey's proposal for eliminating aging as a cause of debilitation and death in humans, and restoring the body to an indefinitely youthful state, a project that he calls the "strategies for engineered negligible senescence" ("SENS"). De Grey argues that defeating aging is feasible, possibly within a few decades, and he outlines steps that can be taken to hasten the development of regenerative medicine treatments for each side of aging
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In cardiac surgery and vascular surgery, external support (or external stent) is a type of scaffold made of metal or plastic material that is inserted over the outside of the vein graft in order to decrease the intermediate and late vein graft failure after bypass surgery (e. g. CABG)
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Fantastic Voyage: Live Long Enough to Live Forever (Rodale Books, ISBN 1-57954-954-3) is a book authored by Ray Kurzweil and Terry Grossman published in 2004. The basic premise of the book is that if middle aged people can live long enough, until approximately 120 years, they will be able to live forever—as humanity overcomes all diseases and old age itself. This might also be considered a break-even scenario where developments made during a year increase life expectancy by more than one year
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Fluorescence guided surgery (FGS), also called fluorescence image-guided surgery, or in the specific case of tumor resection, fluorescence guided resection, is a medical imaging technique used to detect fluorescently labelled structures during surgery. Similarly to standard image-guided surgery, FGS has the purpose of guiding the surgical procedure and providing the surgeon of real time visualization of the operating field. When compared to other medical imaging modalities, FGS is cheaper and superior in terms of resolution and number of molecules detectable
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A heart rate monitor (HRM) is a personal monitoring device that allows one to measure/display heart rate in real time or record the heart rate for later study. It is largely used to gather heart rate data while performing various types of physical exercise. Measuring electrical heart information is referred to as electrocardiography (ECG or EKG)
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An implant is a medical device manufactured to replace a missing biological structure, support a damaged biological structure, or enhance an existing biological structure. For example, an implant may be a rod, used to strengthen weak bones. Medical implants are human-made devices, in contrast to a transplant, which is a transplanted biomedical tissue
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An implantable loop recorder (ILR), also known as an insertable cardiac monitor (ICM), is a small device that is implanted under the skin of the chest for cardiac monitoring, to record the heart's electrical activity for an extended period.
Operation
The ILR monitors the electrical activity of the heart, continuously storing information in its circular memory (hence the name "loop" recorder) as electrocardiograms (ECGs). Abnormal electrical activity - arrhythmia is recorded by "freezing" a segment of the memory for later review
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Large deformation diffeomorphic metric mapping (LDDMM) is a specific suite of algorithms used for diffeomorphic mapping and manipulating dense imagery based on diffeomorphic metric mapping within the academic discipline of computational anatomy, to be distinguished from its precursor based on diffeomorphic mapping. The distinction between the two is that diffeomorphic metric maps satisfy the property that the length associated to their flow away from the identity induces a metric on the group of diffeomorphisms, which in turn induces a metric on the orbit of shapes and forms within the field of Computational Anatomy. The study of shapes and forms with the metric of diffeomorphic metric mapping is called diffeomorphometry
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https://huggingface.co/datasets/fmars/wiki_stem
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Instrument error refers to the error of a measuring instrument, or the difference between the actual value and the value indicated by the instrument. There can be errors of various types, and the overall error is the sum of the individual errors.
Types of errors include
systematic errors
random errors
absolute error
other error
Systematic errors
The size of the systematic error is sometimes referred to as the accuracy
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https://huggingface.co/datasets/fmars/wiki_stem
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Instrumentation is a collective term for measuring instruments, used for indicating, measuring and recording physical quantities. It is also a field of study about the art and science about making measurement instruments, involving the related areas of metrology, automation, and control theory.
The term has its origins in the art and science of scientific instrument-making
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https://huggingface.co/datasets/fmars/wiki_stem
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Instrumentation and control engineering (ICE) is a branch of engineering that studies the measurement and control of process variables, and the design and implementation of systems that incorporate them. Process variables include pressure, temperature, humidity, flow, pH, force and speed.
ICE combines two branches of engineering
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https://huggingface.co/datasets/fmars/wiki_stem
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Instrumentation is used to monitor and control the process plant in the oil, gas and petrochemical industries. Instrumentation ensures that the plant operates within defined parameters to produce materials of consistent quality and within the required specifications. It also ensures that the plant is operated safely and acts to correct out of tolerance operation and to automatically shut down the plant to prevent hazardous conditions from occurring
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https://huggingface.co/datasets/fmars/wiki_stem
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An integrating ADC is a type of analog-to-digital converter that converts an unknown input voltage into a digital representation through the use of an integrator. In its basic implementation, the dual-slope converter, the unknown input voltage is applied to the input of the integrator and allowed to ramp for a fixed time period (the run-up period). Then a known reference voltage of opposite polarity is applied to the integrator and is allowed to ramp until the integrator output returns to zero (the run-down period)
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https://huggingface.co/datasets/fmars/wiki_stem
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An ion drift meter is a device used to measure the velocity of individual ions in the area of a spacecraft. This information can then be used to calculate the ion drift in the space surrounding the instrument as well as the strength of an electric field present, provided that the magnetic field strength has been determined using a magnetometer. The device itself works by allowing ions to pass through an opening at the front of the instrument and measuring the currents produced by the impacts of ions in different locations on a grid at the back
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https://huggingface.co/datasets/fmars/wiki_stem
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An ion-sensitive field-effect transistor (ISFET) is a field-effect transistor used for measuring ion concentrations in solution; when the ion concentration (such as H+, see pH scale) changes, the current through the transistor will change accordingly. Here, the solution is used as the gate electrode. A voltage between substrate and oxide surfaces arises due to an ion sheath
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https://huggingface.co/datasets/fmars/wiki_stem
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A Kibble balance is an electromechanical measuring instrument that measures the weight of a test object very precisely by the electric current and voltage needed to produce a compensating force. It is a metrological instrument that can realize the definition of the kilogram unit of mass based on fundamental constants. It was originally called the watt balance because the weight of the test mass is proportional to the product of current and voltage, which is measured in watts
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https://huggingface.co/datasets/fmars/wiki_stem
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A hydrometer or lactometer is an instrument used for measuring density or relative density of liquids based on the concept of buoyancy. They are typically calibrated and graduated with one or more scales such as specific gravity.
A hydrometer usually consists of a sealed hollow glass tube with a wider bottom portion for buoyancy, a ballast such as lead or mercury for stability, and a narrow stem with graduations for measuring
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https://huggingface.co/datasets/fmars/wiki_stem
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A Langmuir probe is a device used to determine the electron temperature, electron density, and electric potential of a plasma. It works by inserting one or more electrodes into a plasma, with a constant or time-varying electric potential between the various electrodes or between them and the surrounding vessel. The measured currents and potentials in this system allow the determination of the physical properties of the plasma
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https://huggingface.co/datasets/fmars/wiki_stem
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A laser beam profiler captures, displays, and records the spatial intensity profile of a laser beam at a particular plane transverse to the beam propagation path. Since there are many types of lasers — ultraviolet, visible, infrared, continuous wave, pulsed, high-power, low-power — there is an assortment of instrumentation for measuring laser beam profiles. No single laser beam profiler can handle every power level, pulse duration, repetition rate, wavelength, and beam size
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https://huggingface.co/datasets/fmars/wiki_stem
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A laser surface velocimeter (LSV) is a non-contact optical speed sensor measuring velocity and length on moving surfaces. Laser surface velocimeters use the laser Doppler principle to evaluate the laser light scattered back from a moving object. They are widely used for process and quality control in industrial production processes
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https://huggingface.co/datasets/fmars/wiki_stem
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A laxometer is a measuring device for scalp skin mobility, used in hair restoration surgery, where a strip of skin from a donor area on the back of the scalp is transplanted.
History
The laxometer was first presented at the 15th Annual Meeting of the International Society of Hair Restoration Surgery in Las Vegas. It was invented by Parsa Mohebi, M
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https://huggingface.co/datasets/fmars/wiki_stem
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An LCR meter is a type of electronic test equipment used to measure the inductance (L), capacitance (C), and resistance (R) of an electronic component. In the simpler versions of this instrument the impedance was measured internally and converted for display to the corresponding capacitance or inductance value.
Readings should be reasonably accurate if the capacitor or inductor device under test does not have a significant resistive component of impedance
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https://huggingface.co/datasets/fmars/wiki_stem
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LEDDAR (Light-Emitting Diode Detection And Ranging) is a proprietary technology owned by LeddarTech. It uses the time of flight of light signals and signal processing algorithms to detect, locate, and measure objects in its field of view.
Technology
The Leddar technology is like a light-based radar that sends very short light pulses of invisible light about 100,000 times per second to actively illuminate an area of interest
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https://huggingface.co/datasets/fmars/wiki_stem
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A lensmeter or lensometer (sometimes even known as focimeter or vertometer), is an ophthalmic instrument. It is mainly used by optometrists and opticians to measure the back or front vertex power of a spectacle lens and verify the correct prescription in a pair of eyeglasses, to properly orient and mark uncut lenses, and to confirm the correct mounting of lenses in spectacle frames. Lensmeters can also verify the power of contact lenses, if a special lens support is used
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https://huggingface.co/datasets/fmars/wiki_stem
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A level staff, also called levelling rod, is a graduated wooden or aluminium rod, used with a levelling instrument to determine the difference in height between points or heights of points above a vertical datum.
When used for stadiametric rangefinding, the level staff is called a stadia rod.
Rod construction and materials
Levelling rods can be one piece, but many are sectional and can be shortened for storage and transport or lengthened for use
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https://huggingface.co/datasets/fmars/wiki_stem
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A Lippmann electrometer is a device for detecting small rushes of electric current and was invented by Gabriel Lippmann in 1873.
The device consists of a tube which is thick on one end and very thin on the other. The thin end is designed to act as a capillary tube
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https://huggingface.co/datasets/fmars/wiki_stem
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The color measurement of a liquid is the evaluation of that liquid's color properties. This is usually done through visual means, but can also be done by through automated means. The former provides approximate data, while the latter can provide objective data on the color properties of any given liquid
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https://huggingface.co/datasets/fmars/wiki_stem
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A load cell converts a force such as tension, compression, pressure, or torque into an electrical signal that can be measured and standardized. It is a force transducer. As the force applied to the load cell increases, the electrical signal changes proportionally
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https://huggingface.co/datasets/fmars/wiki_stem
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A logic probe is a low-cost hand-held test probe used for analyzing and troubleshooting the logical states (boolean 0 or 1) of a digital circuit. When many signals need to be observed or recorded simultaneously, a logic analyzer is used instead.
Overview
While most logic probes are powered by the circuit under test, some devices use batteries
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https://huggingface.co/datasets/fmars/wiki_stem
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The lunar penetrometer was a spherical electronic tool that served to measure the load-bearing characteristics of the moon in preparation for spacecraft landings. It was designed by NASA to be dropped onto the surface from a vehicle orbiting overhead and transmit information to the spacecraft. However, despite it being proposed for several lunar and planetary missions, the device was never actually fielded by NASA
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https://huggingface.co/datasets/fmars/wiki_stem
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A macrometer is an instrument for measuring the size and distance of distant objects. Distant in this sense means a length that can not be readily measured by a calibrated length. The optical version of this instrument used two mirrors on a common sextant
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https://huggingface.co/datasets/fmars/wiki_stem
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A magnetic level gauge is a type of level sensor, i. e. , a device used to measure the level of fluids
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https://huggingface.co/datasets/fmars/wiki_stem
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Magnetic tweezers (MT) are scientific instruments for the manipulation and characterization of biomolecules or polymers. These apparatus exert forces and torques to individual molecules or groups of molecules. It can be used to measure the tensile strength or the force generated by molecules
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https://huggingface.co/datasets/fmars/wiki_stem
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A magnetometer is a device that measures magnetic field or magnetic dipole moment. Different types of magnetometers measure the direction, strength, or relative change of a magnetic field at a particular location. A compass is one such device, one that measures the direction of an ambient magnetic field, in this case, the Earth's magnetic field
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https://huggingface.co/datasets/fmars/wiki_stem
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A marine sandglass is a timepiece of simple design that is a relative of the common hourglass, a marine (nautical) instrument known since the 14th century (although reasonably presumed to be of very ancient use and origin). Sandglasses were used to measure the time at sea or on a given navigational course, in repeated measures of small time increments (e. g
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https://huggingface.co/datasets/fmars/wiki_stem
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A mass flow controller (MFC) is a device used to measure and control the flow of liquids and gases. A mass flow controller is designed and calibrated to control a specific type of liquid or gas at a particular range of flow rates. The MFC can be given a setpoint from 0 to 100% of its full scale range but is typically operated in the 10 to 90% of full scale where the best accuracy is achieved
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https://huggingface.co/datasets/fmars/wiki_stem
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