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  2. TheReportOfTheWeek - Wikipedia

    en.wikipedia.org/wiki/TheReportOfTheWeek

    John Jurasek (born 1997 or 1998), [2] better known online as TheReportOfTheWeek or Reviewbrah, is an American YouTube personality, food critic and radio host.Jurasek reviews fast food, frozen meals, and energy drinks on his YouTube channel of the same name, and hosts a radio show on shortwave radio, Spotify, TuneIn, and SoundCloud.

  3. Advanced very-high-resolution radiometer - Wikipedia

    en.wikipedia.org/wiki/Advanced_very-high...

    The instrument scans several channels; two are centered on the red (0.6 micrometres) and near-infrared (0.9 micrometres) regions, a third one is located around 3.5 micrometres, and another two the thermal radiation emitted by the planet, around 11 and 12 micrometres. [1] The first AVHRR instrument was a four-channel radiometer. The last version ...

  4. Turbofan - Wikipedia

    en.wikipedia.org/wiki/Turbofan

    The shaped edges smooth the mixing of hot air from the engine core and cooler air flowing through the engine fan, which reduces noise-creating turbulence. [37] Chevrons were developed by GE under a NASA contract. [31] Some notable examples of such designs are Boeing 787 and Boeing 747-8 – on the Rolls-Royce Trent 1000 and General Electric ...

  5. Satellite temperature measurement - Wikipedia

    en.wikipedia.org/wiki/Satellite_temperature...

    The SSU is a far-infrared spectrometer employing a pressure modulation technique to make measurement in three channels in the 15 μm carbon dioxide absorption band. The three channels use the same frequency but different carbon dioxide cell pressure, the corresponding weighting functions peaks at 29 km for channel 1, 37 km for channel 2 and 45 ...

  6. Emissivity - Wikipedia

    en.wikipedia.org/wiki/Emissivity

    Radiance emitted by a surface, divided by that emitted by a black body at the same temperature as that surface. Spectral directional emissivity: ε Ω,ν ε Ω,λ — Spectral radiance emitted by a surface, divided by that of a black body at the same temperature as that surface. Hemispherical absorptance: A —

  7. Radiation pressure - Wikipedia

    en.wikipedia.org/wiki/Radiation_pressure

    The radiation pressure on the atom slows movement in a particular direction until the Doppler effect moves out of the frequency range of the element, causing an overall cooling effect. [34] An other active research area of laser–matter interaction is the radiation pressure acceleration of ions or protons from thin–foil targets. [35]

  8. Spectral radiance - Wikipedia

    en.wikipedia.org/wiki/Spectral_radiance

    I (x, t ; r 1, ν) is defined to be such that a virtual source area, dA 1, containing the point P 1, is an apparent emitter of a small but finite amount of energy dE transported by radiation of frequencies (ν, ν + dν) in a small time duration dt, where = (,;,) ⁡ (), and where θ 1 is the angle between the line of propagation r and the normal P 1 N 1 to dA 1; the effective destination of ...

  9. Outgoing longwave radiation - Wikipedia

    en.wikipedia.org/wiki/Outgoing_longwave_radiation

    The emissivity of Earth's surface has been measured to be in the range 0.65 to 0.99 (based on observations in the 8-13 micron wavelength range) with the lowest values being for barren desert regions. The emissivity is mostly above 0.9, and the global average surface emissivity is estimated to be around 0.95. [13] [14]