- published: 04 Feb 2016
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A sensor (also called detector) is a converter that measures a physical quantity and converts it into a signal which can be read by an observer or by an (today mostly electronic) instrument. For example, a mercury-in-glass thermometer converts the measured temperature into expansion and contraction of a liquid which can be read on a calibrated glass tube. A thermocouple converts temperature to an output voltage which can be read by a voltmeter. For accuracy, most sensors are calibrated against known standards.
Sensors are used in everyday objects such as touch-sensitive elevator buttons (tactile sensor) and lamps which dim or brighten by touching the base. There are also innumerable applications for sensors of which most people are never aware. Applications include cars, machines, aerospace, medicine, manufacturing and robotics.
A sensor is a device which receives and responds to a signal. A sensor's sensitivity indicates how much the sensor's output changes when the measured quantity changes. For instance, if the mercury in a thermometer moves 1 cm when the temperature changes by 1 °C, the sensitivity is 1 cm/°C (it is basically the slope Dy/Dx assuming a linear characteristic). Sensors that measure very small changes must have very high sensitivities. Sensors also have an impact on what they measure; for instance, a room temperature thermometer inserted into a hot cup of liquid cools the liquid while the liquid heats the thermometer. Sensors need to be designed to have a small effect on what is measured; making the sensor smaller often improves this and may introduce other advantages. Technological progress allows more and more sensors to be manufactured on a microscopic scale as microsensors using MEMS technology. In most cases, a microsensor reaches a significantly higher speed and sensitivity compared with macroscopic approaches.
Actors: Bruno Decc (producer), Bruno Decc (writer), Bruno Decc (director), Paulo Goya (actor), Che. Moais (actor), Paulo Leblon (editor), André Bachur (composer), Guilherme Toledo (composer), Natália Lobo (actress),
Plot: The film chronicles the journey of a man and a girl - whose exact relationship is mysterious - through a subterranean world devoid of natural light. There, a dystopian society is facing its technological and moral degradation, depletion of energy resources and, consequently, the paradigm of eternal darkness.
Genres: Sci-Fi, Short,Actors: Greg Joseph (actor), Shannon Dillon (producer), Shannon Dillon (writer), Shannon Dillon (director), Shannon Dillon (editor), Shannon Dillon (director),
Genres: Drama, Short,Actors: Benny Chan (director), Benny Chan (producer), Daniel Lam (producer), Daniel Wu (actor), Ekin Cheng (actor), Rongguang Yu (actor), Aaron Kwok (actor), Suet Lam (actor), Sam Lee (actor), Eric Tsang (actor), Wah Cheung (actor), Siu-Ming Lau (actor), Ricky Hui (actor), Tony Ho (actor), Tak-bun Wong (actor),
Plot: This thriller has Suen chasing some gangsters around Hong Kong. One of his key witnesses is assassinated after being extradited from Canada and that puts an end to the prosecution's case. Meanwhile, Suen is still struggling with his girlfriends disappearance 10 years ago. A pair of assassins fill out the third plot chain. The gangsters, Suen, and the assassins intersect often as they try to solve the crimes and find out what happened to Suen's girlfriend.
Keywords: action-violence, assassin, beretta, blood, blood-spatter, boat, car-explosion, desert-eagle-.50, gun-battle, gunfightActors: Benny Chan (director), Benny Chan (producer), Daniel Lam (producer), Daniel Wu (actor), Ekin Cheng (actor), Rongguang Yu (actor), Aaron Kwok (actor), Suet Lam (actor), Sam Lee (actor), Eric Tsang (actor), Wah Cheung (actor), Siu-Ming Lau (actor), Ricky Hui (actor), Tony Ho (actor), Tak-bun Wong (actor),
Plot: This thriller has Suen chasing some gangsters around Hong Kong. One of his key witnesses is assassinated after being extradited from Canada and that puts an end to the prosecution's case. Meanwhile, Suen is still struggling with his girlfriends disappearance 10 years ago. A pair of assassins fill out the third plot chain. The gangsters, Suen, and the assassins intersect often as they try to solve the crimes and find out what happened to Suen's girlfriend.
Keywords: action-violence, assassin, beretta, blood, blood-spatter, boat, car-explosion, desert-eagle-.50, gun-battle, gunfightActors: John Jopson (writer), Igor Yasulovich (actor), Boris Shcherbakov (actor), John Jopson (writer), Viktor Stepanov (actor), Evgeniy Sidikhin (actor), Aleksandr Dyachenko (actor), Fyodor Popov (producer), Aleksandra Nazarova (actress), Tatyana Meshcherkina (actress), Ivan Agapov (actor), Josh Holland (actor), Gleb Plaksin (actor), Aleksandr Pashkovskiy (actor), Sergey Chekryzhov (composer),
Genres: Action, Adventure,