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AMETEK Straza
AMETEK, Inc. is an American multinational conglomerate and global designer and manufacturer of electronic instruments and electromechanical devices with headquarters in the United States and over 220 sites worldwide. The company was founded in 1930. The company's original name, ''American Machine and Metals'', was changed to AMETEK in the early 1960s, reflecting AME's evolution from a provider of heavy machinery to a manufacturer of analytical instruments, precision components and specialty materials. AMETEK has been ranked as high as 402 on the Fortune 500. The firm has also consistently been on the Fortune 1000 rankings list as well as the Fortune Global 2000. The overall strategy for the organization is made up of 4 components: Operational Excellence (cost control), New Product Development, International/Market Expansion, and Acquisitions. The firm has two operating groups (the ''Electronic Instruments Group'' and the ''Electromechanical Group''). Together, these groups an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Company
A public company is a company whose ownership is organized via shares of stock which are intended to be freely traded on a stock exchange or in over-the-counter markets. A public (publicly traded) company can be listed on a stock exchange ( listed company), which facilitates the trade of shares, or not ( unlisted public company). In some jurisdictions, public companies over a certain size must be listed on an exchange. In most cases, public companies are ''private'' enterprises in the ''private'' sector, and "public" emphasizes their reporting and trading on the public markets. Public companies are formed within the legal systems of particular states, and therefore have associations and formal designations which are distinct and separate in the polity in which they reside. In the United States, for example, a public company is usually a type of corporation (though a corporation need not be a public company), in the United Kingdom it is usually a public limited company (plc), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brushless DC Motor
A brushless DC electric motor (BLDC motor or BL motor), also known as an electronically commutated motor (ECM or EC motor) or synchronous DC motor, is a synchronous motor using a direct current (DC) electric power supply. It uses an electronic controller to switch DC currents to the motor windings producing magnetic fields which effectively rotate in space and which the permanent magnet rotor follows. The controller adjusts the phase and amplitude of the DC current pulses to control the speed and torque of the motor. This control system is an alternative to the mechanical commutator (brushes) used in many conventional electric motors. The construction of a brushless motor system is typically similar to a permanent magnet synchronous motor (PMSM), but can also be a switched reluctance motor, or an induction (asynchronous) motor. They may also use neodymium magnets and be outrunners (the stator is surrounded by the rotor), inrunners (the rotor is surrounded by the sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lévis, Quebec
Lévis () is a city in eastern Quebec, Canada, located on the south shore of the St. Lawrence River, opposite Quebec City. A ferry links Old Quebec with Old Lévis, and two bridges, the Quebec and the Pierre-Laporte, connect western Lévis with Quebec City. The population in July 2017 was 144,147. Its current incarnation was founded on January 1, 2002, as the result of a merger among ten cities, including the older city of Lévis founded in 1861. Lévis is also the name of a territory equivalent to a regional county municipality (TE) and census division (CD) of Quebec, coextensive with the city of Lévis. Its geographical code is 25 as a census division, and 251 as an RCM-equivalent territory. History First Nations and prehistoric indigenous peoples settled in this area for thousands of years due to its ideal location at the confluence of the Chaudière and the St. Lawrence rivers. Many archeological sites reveal evidence of human occupation dating to 10,000 years ago. So ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3D Modeling
In 3D computer graphics, 3D modeling is the process of developing a mathematical coordinate-based representation of any surface of an object (inanimate or living) in three dimensions via specialized software by manipulating edges, vertices, and polygons in a simulated 3D space. Three-dimensional (3D) models represent a physical body using a collection of points in 3D space, connected by various geometric entities such as triangles, lines, curved surfaces, etc. Being a collection of data (points and other information), 3D models can be created manually, algorithmically ( procedural modeling), or by scanning. Their surfaces may be further defined with texture mapping. Outline The product is called a 3D model. Someone who works with 3D models may be referred to as a 3D artist or a 3D modeler. A 3D Model can also be displayed as a two-dimensional image through a process called 3D rendering or used in a computer simulation of physical phenomena. 3D Models may be create ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metrology
Metrology is the scientific study of measurement. It establishes a common understanding of units, crucial in linking human activities. Modern metrology has its roots in the French Revolution's political motivation to standardise units in France when a length standard taken from a natural source was proposed. This led to the creation of the decimal-based metric system in 1795, establishing a set of standards for other types of measurements. Several other countries adopted the metric system between 1795 and 1875; to ensure conformity between the countries, the Bureau International des Poids et Mesures (BIPM) was established by the Metre Convention. This has evolved into the International System of Units (SI) as a result of a resolution at the 11th General Conference on Weights and Measures (CGPM) in 1960. Metrology is divided into three basic overlapping activities: * The definition of units of measurement * The realisation of these units of measurement in practice * Traceab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rheology
Rheology (; ) is the study of the flow of matter, primarily in a fluid (liquid or gas) state, but also as "soft solids" or solids under conditions in which they respond with plastic flow rather than deforming elastically in response to an applied force. Rheology is a branch of physics, and it is the science that deals with the deformation and flow of materials, both solids and liquids.W. R. Schowalter (1978) Mechanics of Non-Newtonian Fluids Pergamon The term '' rheology'' was coined by Eugene C. Bingham, a professor at Lafayette College, in 1920, from a suggestion by a colleague, Markus Reiner.The Deborah Number The term was inspired by the of |
Viscosity
The viscosity of a fluid is a measure of its resistance to deformation at a given rate. For liquids, it corresponds to the informal concept of "thickness": for example, syrup has a higher viscosity than water. Viscosity quantifies the internal frictional force between adjacent layers of fluid that are in relative motion. For instance, when a viscous fluid is forced through a tube, it flows more quickly near the tube's axis than near its walls. Experiments show that some stress (such as a pressure difference between the two ends of the tube) is needed to sustain the flow. This is because a force is required to overcome the friction between the layers of the fluid which are in relative motion. For a tube with a constant rate of flow, the strength of the compensating force is proportional to the fluid's viscosity. In general, viscosity depends on a fluid's state, such as its temperature, pressure, and rate of deformation. However, the dependence on some of these properties ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
X-ray Fluorescence
X-ray fluorescence (XRF) is the emission of characteristic "secondary" (or fluorescent) X-rays from a material that has been excited by being bombarded with high-energy X-rays or gamma rays. The phenomenon is widely used for elemental analysis and analytical chemistry, chemical analysis, particularly in the investigation of metals, glass, ceramics and building materials, and for research in geochemistry, forensic science, archaeology and art objects such as paintings. Underlying physics When materials are exposed to short-wavelength X-rays or to gamma rays, ionization of their component atoms may take place. Ionization consists of the ejection of one or more electrons from the atom, and may occur if the atom is exposed to radiation with an energy greater than its ionization energy. X-rays and gamma rays can be energetic enough to expel tightly held electrons from the inner atomic orbital, orbitals of the atom. The removal of an electron in this way makes the electronic structu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zygo Corporation
Zygo Corporation, or simply Zygo, is a manufacturer headquartered at Middlefield, Connecticut that specializes in optical systems and equipment. Their metrology product lines include 3D measuring microscopes using coherence scanning interferometry, laser Fizeau interferometers for testing optical components, laser displacement interferometers, and heterodyne optical encoders for stage position metrology. Zygo’s optics business manufactures both optical assembly and custom optics for medical instruments and national labs. Over 750 patents have been awarded since the Company's founding. In October 2008, competitor ESI attempted to acquire Zygo for approximately 174 million USD worth of stock but the buy-out was stymied by Zygo's board of directors. Zygo later became part of the Ultra Precision Technologies Division of Ametek, Inc. as a result of a 2014 acquisition. History and products The company was founded in 1970 by Paul Forman, Carl Zanoni, and Sol Laufer, with financial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VTI Instruments
VTI Instruments Corporation sells precision instrumentation for electronic signal distribution, data acquisition and monitoring. The company's products are used to automate the functional testing of complex electronic systems as well as to monitor and record data that characterizes the physical integrity of aircraft, engines, and other large structures. Formerly known as VXI Technology, it changed its name in 2009. VTI serves the following markets: aerospace, defense, and energy and power generation. VTI's headquarters is located in Irvine, California. History Founded in 1990, VTI initially developed prototyping tools and offered custom design services. By 1997, VTI had introduced two new VXI-based instrumentation and signal switching platforms for functional test/ATE – the VMIP and SMIP series. In 2003, VTI purchased Agilent's mechanical test business unit, which expanded the company's product offering to address precision data acquisition and signal conditioning application ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teseq
Teseq AG, formerly Schaffner Test Systems is a supplier of Electromagnetic compatibility (EMC) test equipment and test systems. They develop and manufacture instruments for EMC emissions and immunity testing both for radiated and conducted emissions and immunity. Teseq operates ISO 17025 accredited calibration laboratories with EMC specialization. Teseq was twice nominated for Best in Test by Test & Measurement World Magazine and has been awarded A2LA certification. Teseq, formerly Schaffner Test Systems was the first company to recognize the threat of EMC emissions and interference and begin offering EMC instruments. History of Teseq AG 1962 Schaffner Switzerland established by Dr. Hans Schaffner 1971 First EMC test instrument launched 1981 First electrostatic discharge (ESD) generator released 1975–1990 Expansion to France, US, Singapore, Japan and China 1998 Acquisition of Chase EMC Ltd., Capel, UK 1999 Acquisition of MEB Messelektronik Berlin GmbH 2006 Management buy-ou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uninterruptible Power Supply
An uninterruptible power supply or uninterruptible power source (UPS) is an electrical apparatus that provides emergency power to a load when the input power source or mains power fails. A UPS differs from an auxiliary or emergency power system or standby generator in that it will provide near-instantaneous protection from input power interruptions, by supplying energy stored in batteries, supercapacitors, or flywheels. The on-battery run-time of most uninterruptible power sources is relatively short (only a few minutes) but sufficient to start a standby power source or properly shut down the protected equipment. It is a type of continual power system. A UPS is typically used to protect hardware such as computers, data centers, telecommunication equipment or other electrical equipment where an unexpected power disruption could cause injuries, fatalities, serious business disruption or data loss. UPS units range in size from ones designed to protect a single computer with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
