Pressure measurement is the measurement of an applied force by a fluid on a surface. Pressure is typically measured in units of force per unit of surface area. Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure and display pressure mechanically are called pressure gauges,vacuum gauges or compound gauges. The widely used Bourdon gauge is a mechanical device, which both measures and indicates and is probably the best known type of gauge.
The micrometre or micrometer, also commonly known by the non-SI term micron, is a unit of length in the International System of Units (SI) equalling 1×10−6 metre ; that is, one millionth of a metre.
In digital imaging, a pixel, pel, or picture element is the smallest addressable element in a raster image, or the smallest addressable element in a dot matrix display device. In most digital display devices, pixels are the smallest element that can be manipulated through software.
A photodiode is a light-sensitive semiconductor diode. It produces current when it absorbs photons.
A speedometer or speed meter is a gauge that measures and displays the instantaneous speed of a vehicle. Now universally fitted to motor vehicles, they started to be available as options in the early 20th century, and as standard equipment from about 1910 onwards. Other vehicles may use devices analogous to the speedometer with different means of sensing speed, eg. boats use a pit log, while aircraft use an airspeed indicator.
A semiconductor detector in ionizing radiation detection physics is a device that uses a semiconductor to measure the effect of incident charged particles or photons.
Radiodensity is opacity to the radio wave and X-ray portion of the electromagnetic spectrum: that is, the relative inability of those kinds of electromagnetic radiation to pass through a particular material. Radiolucency or hypodensity indicates greater passage to X-ray photons and is the analogue of transparency and translucency with visible light. Materials that inhibit the passage of electromagnetic radiation are called radiodense or radiopaque, while those that allow radiation to pass more freely are referred to as radiolucent. Radiopaque volumes of material have white appearance on radiographs, compared with the relatively darker appearance of radiolucent volumes. For example, on typical radiographs, bones look white or light gray (radiopaque), whereas muscle and skin look black or dark gray, being mostly invisible (radiolucent).
A pyranometer is a type of actinometer used for measuring solar irradiance on a planar surface and it is designed to measure the solar radiation flux density (W/m2) from the hemisphere above within a wavelength range 0.3 μm to 3 μm.
Energy harvesting is the process by which energy is derived from external sources, then stored for use by small, wireless autonomous devices, like those used in wearable electronics, condition monitoring, and wireless sensor networks.
A passive infrared sensor is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors. PIR sensors are commonly used in security alarms and automatic lighting applications.
A film scanner is a device made for scanning photographic film directly into a computer without the use of any intermediate printmaking. It provides several benefits over using a flatbed scanner to scan in a print of any size: the photographer has direct control over cropping and aspect ratio from the original, unmolested image on film; and many film scanners have special software or hardware that removes scratches and film grain and improves color reproduction from film.
An infrared thermometer is a thermometer which infers temperature from a portion of the thermal radiation sometimes called black-body radiation emitted by the object being measured. They are sometimes called laser thermometers as a laser is used to help aim the thermometer, or non-contact thermometers or temperature guns, to describe the device's ability to measure temperature from a distance. By knowing the amount of infrared energy emitted by the object and its emissivity, the object's temperature can often be determined within a certain range of its actual temperature. Infrared thermometers are a subset of devices known as "thermal radiation thermometers".
In digital photography, the image sensor format is the shape and size of the image sensor.
A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact.
Medipix is a family of photon counting and particle tracking pixel detectors developed by an international collaboration, hosted by CERN.
Nuclear densitometry is a technique used in civil construction and the petroleum industry, as well as for mining and archaeology purposes, to measure the density and inner structure of the test material. The processes uses a nuclear density gauge, which consists of a radiation source that emits particles and a sensor that counts the received particles that are either reflected by the test material or pass through it. By calculating the percentage of particles that return to the sensor, the gauge can be calibrated to measure the density.
Optical format is a hypothetical measurement approximately 50% larger than the true diagonal size of a solid-state photo sensor. The use of the optical format means that a lens used with a particular size sensor will have approximately the same angle of view as if it were to be used with an equivalent-sized video camera tube. In a video camera tube the diagonal of the actual light-sensitive target was about two-thirds the outside diameter, which was the measure used.
The Samsung Gear Fit is a fitness wristband made by Samsung Electronics, and forms part of their Samsung Gear family of smartwatch devices. It features a curved AMOLED display. Its design was developed to appeal to people interested in fitness and style. The included applications facilitate monitoring fitness activities:
The Sony Xperia Z4 Tablet is a touchscreen Android tablet manufactured and designed by Sony Mobile. Unlike its predecessor, the Xperia Z4 tablet features a 2560 x 1600 resolution 10.1-inch screen and is water and dustproof with a rating of IP65 and IP68. The tablet is lighter and thinner than its predecessor, weighing at 0.85 pound (389 g) for the WiFi model and 0.86 pound (393 g) for the LTE model and is 0.24 inches (6.1 mm) thick. The Z4 Tablet features the Snapdragon 810 processor and WQXGA resolution screen. It was announced on 2 March 2015 in a press conference held by Sony alongside the Sony Xperia M4 Aqua during the 2015 Mobile World Congress in Barcelona, Spain.
Lenovo Vibe P1 is an Android smartphone manufactured by Lenovo. The Vibe P1 was announced on 2 September 2015 at IFA 2015. It was launched in October 2015 for US$249. It is available in Silver, Platinum and Graphite Grey and Gold colour variants.
