Vortex is a remix album by the group Collide featuring remixes of songs from their albums Chasing the Ghost (2000) and Some Kind of Strange (2003) and 3 new covers.
Vortex is a KMG Afterburner at Thorpe Park, an amusement park in Chertsey, Surrey, England. It was installed in the Lost City area of the park in 2001. It opened on 25 May, seven weeks after the opening of the 2001 season.
Riders sit in seats arranged in a circle facing inwards, there are eight gondolas with four seats on each. After the over-the-shoulder restraints have been lowered and checked, the platform lowers. The seats then begin to rotate, and after approximately one rotation the ride begins to swing. The ride swings back and forth, swinging up to a maximum height of 20 metres and angle of 120 degrees at 15rpm. After several full height swings, the ride then begins to slow before coming to a halt, the platform is then raised and riders fast track and single rider questions operate.
Vortex is a high-fidelity, realtime physics engine developed by CM Labs Simulations that simulates rigid body dynamics, collision detection, contact determination, and dynamic reactions. Vortex adds accurate physical motion and interactions to objects in visual-simulation applications for operator training, mission planning, product concept validation, vehicle and robotics testing, haptics devices, immersive and virtual reality (VR) environments.
The Vortex C++ SDK has several modules that simulate physics-based particles, sensors, floating bodies, cable systems, grasping, and wheeled and tracked vehicles. Developers integrate their projects into 3D visualization frameworks such as OpenSceneGraph (OSG) and Vega Prime, and deploy them in environments that contain software-in-the-loop (SIL), MATLAB, hardware-in-the-loop (HIL), and motion platform components.
Vortex is developed by CM Labs Simulations Inc., a private company established in Montreal in 2001. CM Labs was created when the management of MathEngine Canada Inc. purchased a portion of the business from MathEngine PLC, the parent company in the UK. MathEngine Canada Inc. was originally the research and development team responsible for creating the Karma physics simulation engine for computer games.
The radio frequency 2 182 kHz is one of the international calling and distress frequency for maritime radiocommunication on a frequency band allocated to the MOBILE SERVICE on primary basis, exclusively for distress and calling operations.
Transmissions on 2182 kHz commonly use single-sideband modulation (SSB) (upper sideband only). However, amplitude modulation (AM) and some variants such as vestigial sideband are still in use, mainly by vessels with older equipment and by some coastal stations in an attempt to ensure compatibility with older and less sophisticated receivers.
2182 kHz is analogous to channel 16 on the marine VHF band, but unlike VHF which is limited to ranges of about 20 to 50 nautical miles (40 to 90 km) depending on antenna height, communications on 2182 kHz and nearby frequencies have a reliable range of around 50 to 150 nautical miles (90 to 280 km) during the day and 150 to 300 nautical miles (280 to 560 km) or sometimes more at night. The reception range of even a well-equipped station can be severely limited in summer because of static caused by lightning.
In digital audio, 44,100 Hz (alternately represented as 44.1 kHz) is a common sampling frequency. Analog audio is recorded by sampling it 44,100 times per second, and then these samples are used to reconstruct the audio signal when playing it back.
44.1 kHz audio is widely used, due to this being the sampling rate used in Compact Discs, dating back to its use by Sony from 1979.
The 44.1 kHz sampling rate originated in the late 1970s with PCM adaptors, which recorded digital audio on video cassettes, notably the Sony PCM-1600 (1979) and subsequent models in this series. This then became the basis for Compact Disc digital audio (CD-DA), defined in the Red Book standard (1980). Its use has continued as an option in 1990s standards such as the DVD, and in 2000s, standards such as HDMI. This sampling frequency is commonly used for MP3 and other consumer audio file formats which were originally created from material ripped from Compact Discs.
The rate was chosen following debate between manufacturers, notably Sony and Philips, and its implementation by Sony, yielding a de facto standard. The technical reasoning behind the rate being chosen is as follows.
Since early in the 20th century, the radio frequency of 500 kilohertz (500 kHz) has been an international calling and distress frequency for Morse code maritime communication. The unit kilohertz was not introduced until the 1960s. For most of its history, the international distress frequency was referred to by its equivalent wavelength, 600 meters, or, using the earlier frequency unit name, 500 kilocycles (per second) or 500 kc.
The United States Coast Guard and comparable agencies of other nations used to maintain 24-hour watches on this frequency, staffed by highly skilled radio operators. Many SOS calls and medical emergencies at sea were handled here until the late 1980s. However, because of the near disappearance of the commercial use of Morse code, the frequency is now rarely used. Emergency traffic on 500 kHz has been almost completely replaced by the Global Maritime Distress Safety System (GMDSS). Beginning in the late 1990s, most nations ended monitoring of transmissions on 500 kHz. The nearby frequencies of 518 kHz and 490 kHz are used for the Navtex component of GMDSS. Proposals to allocate frequencies at or near 500 kHz to amateur radio use resulted in the creation of the 600-meter amateur radio band.