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A bouncing ball captured with a stroboscopic flash at 25 images per second. A strobe light flashing at the proper period can appear to freeze or reverse cyclical motion. A stroboscope, also known as a strobe, is an instrument used to make a cyclically moving object appear to be slow-moving, or stationary.
Miniature golf (also known as minigolf, putt-putt, crazy golf, and by several other names) is an offshoot of the sport of golf focusing solely on the putting aspect of its parent game. The aim of the game is to score the lowest number of points.
3D Ultra Minigolf is a series of arcade-style miniature golf titles. It began in 1997 with 3D Ultra Minigolf, with 3D Ultra Minigolf Adventures and its sequel, 3D Ultra Minigolf Adventures 2 developed by Wanako Games. 3D Ultra Minigolf Adventures has been released for Microsoft Windows and Xbox 360.
The control action is the switching on/off of the boiler, but the controlled variable should be the building temperature, but is not because this is open-loop control of the boiler, which does not give closed-loop control of the temperature. In closed loop control, the control action from the controller is dependent on the process output.
A motion detector attached to an outdoor, automatic light. A motion detector is an electrical device that utilizes a sensor to detect nearby motion (motion detection).Such a device is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area.
The interference on a Sagnac interferometer is proportional to the enclosed area. A looped fibre-optic coil multiplies the effective area by the number of loops. A fibre-optic gyroscope (FOG) senses changes in orientation using the Sagnac effect, thus performing the function of a mechanical gyroscope.
A passive infrared sensor (PIR 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.
Hall effect devices produce a very low signal level and thus require amplification. The vacuum tube amplifier technology available in the first half of the 20th century was too large, expensive, and power-consuming for everyday Hall effect sensor applications, which were limited to laboratory instruments.