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  • Thumbnail for Theodolite
    mounted so it can rotate around horizontal and vertical axes and provide angular readouts. These indicate the orientation of the telescope, and are used...
    26 KB (3,314 words) - 10:57, 2 September 2024
  • Thumbnail for Frequency
    distinguish it from spatial frequency. Ordinary frequency is related to angular frequency (symbol ω, with SI unit radian per second) by a factor of 2π...
    21 KB (2,290 words) - 11:44, 15 July 2024
  • Thumbnail for Inertial measurement unit
    an electronic device that measures and reports a body's specific force, angular rate, and sometimes the orientation of the body, using a combination of...
    18 KB (2,127 words) - 13:11, 21 July 2024
  • Thumbnail for Inertial navigation system
    integration drift: small errors in the measurement of acceleration and angular velocity are integrated into progressively larger errors in velocity, which are...
    47 KB (5,964 words) - 23:20, 29 July 2024
  • Thumbnail for Tridecagon
    {692307}}^{\circ }} Absolute angular error of the constructed central angle: Up to 13 decimal places, the absolute error is F μ = μ − μ target = 0.0 ∘...
    7 KB (702 words) - 11:28, 11 January 2024
  • Thumbnail for Visual acuity
    visual acuity is refractive error (ametropia): errors in how the light is refracted in the eye. Causes of refractive errors include aberrations in the...
    63 KB (7,711 words) - 14:42, 14 August 2024
  • Faster-than-light (superluminal or supercausal) travel and communication are the conjectural propagation of matter or information faster than the speed...
    68 KB (8,114 words) - 03:13, 9 September 2024
  • taken at each station, whereas in other survey networks a great deal of angular and linear observations need to be made and considered; Traverse networks...
    4 KB (474 words) - 20:49, 14 May 2024
  • Thumbnail for Bearing (navigation)
    and north or another object. The angle value can be specified in various angular units, such as degrees, mils, or grad. More specifically: Absolute bearing...
    15 KB (1,957 words) - 17:07, 9 June 2024
  • Thumbnail for Servo (radio control)
    varies between brands and models, but a general servo's full angular motion will travel somewhere in the range of 90° – 180° and the neutral position...
    12 KB (1,719 words) - 13:06, 11 May 2024
  • Thumbnail for Seismic wave
    at many kilometers per second, being off on travel-time calculation by even a half second can mean an error of many kilometers in terms of distance. In...
    21 KB (2,384 words) - 22:58, 28 August 2024
  • Thumbnail for Betelgeuse
    Betelgeuse (category CS1 errors: periodical ignored)
    extrasolar star whose photosphere's angular size was measured in 1920, and subsequent studies have reported an angular diameter (i.e., apparent size) ranging...
    174 KB (18,519 words) - 23:25, 16 September 2024
  • Thumbnail for Cosmic microwave background
    more sensitive than WMAP and has a larger angular resolution, record the same anomaly, and so instrumental error (but not foreground contamination) appears...
    108 KB (13,172 words) - 01:01, 1 September 2024
  • Thumbnail for Equations of motion
    the constant angular acceleration, ω is the angular velocity, ω0 is the initial angular velocity, θ is the angle turned through (angular displacement)...
    55 KB (7,476 words) - 10:18, 6 June 2024
  • PSK, the constellation points chosen are usually positioned with uniform angular spacing around a circle. This gives maximum phase-separation between adjacent...
    42 KB (6,226 words) - 17:25, 4 September 2024
  • Thumbnail for Dead reckoning
    significant errors of approximation. For precise positional information, both speed and direction must be accurately known at all times during travel. Most...
    27 KB (3,570 words) - 08:23, 14 July 2024
  • angular (rotational) acceleration using specialized organs in the inner ear. Linear accelerations are detected by the otolith organs, while angular accelerations...
    32 KB (3,014 words) - 16:32, 19 July 2024
  • Thumbnail for Fibre-optic gyroscope
    measured through interferometry, thus translating one component of the angular velocity into a shift of the interference pattern which is measured photometrically...
    5 KB (624 words) - 04:04, 3 June 2024
  • more motorized gimbals that tilt the rotor’s angular momentum. As the rotor tilts, the changing angular momentum causes a gyroscopic torque that rotates...
    32 KB (4,353 words) - 04:19, 20 July 2024
  • Thumbnail for Motion simulator
    Motion simulator (category CS1 errors: missing periodical)
    ampulla and is sealed by a flap called the cupula. Angular accelerations are detected as follows: an angular acceleration causes the fluid in the canals to...
    50 KB (7,189 words) - 00:58, 7 September 2024
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