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  2. Aerial survey - Wikipedia

    en.wikipedia.org/wiki/Aerial_survey

    Aerial survey is a method of collecting geomatics or other imagery data using airplanes, helicopters, UAVs, balloons, or other aerial methods. Typical data collected includes aerial photography , Lidar , remote sensing (using various visible and invisible bands of the electromagnetic spectrum , such as infrared , gamma , or ultraviolet ) and ...

  3. File:B & M Railroad, Section House, South Sudbury MA.jpg

    en.wikipedia.org/wiki/File:B_&_M_Railroad...

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  4. Photometric system - Wikipedia

    en.wikipedia.org/wiki/Photometric_system

    Vilnius photometric system U = 345 nm P = 374 nm S = 405 nm Y = 466 nm Z = 516 nm V = 544 nm S = 656 nm Vilnius photometric system: VISTA IRC Z = 0.88 μm Y = 1.02 μm J = 1.25 μm H = 1.65 μm K s = 2.20 μm NB1.18 = 1.18 μm Visible & Infrared Survey Telescope for Astronomy: WISE W1 = 3.4 μm W2 = 4.6 μm W3 = 12 μm W4 = 22 μm

  5. Sudbury, Massachusetts - Wikipedia

    en.wikipedia.org/wiki/Sudbury,_Massachusetts

    1871 Atlas of Massachusetts. by Wall & Gray.Map of Massachusetts. Map of Middlesex County. History of Middlesex County, Massachusetts, Volume 1 (A–H), Volume 2 (L–W) compiled by Samuel Adams Drake, published 1879 and 1880. 572 and 505 pages. Sudbury article by Rev. George A. Oviatt in volume 2 pages 357–381.

  6. Spectroradiometry for Earth and planetary remote sensing

    en.wikipedia.org/wiki/Spectroradiometry_for...

    Spectroradiometry is a technique in Earth and planetary remote sensing, which makes use of light behaviour, specifically how light energy is reflected, emitted, and scattered by substances, to explore their properties in the electromagnetic (light) spectrum and identify or differentiate between them. [1]

  7. Sudbury Aqueduct - Wikipedia

    en.wikipedia.org/wiki/Sudbury_Aqueduct

    [4] [5] Clean water was directed through alternate pipelines to bypass the break, but to provide all the water needed, the Massachusetts Water Resources Authority supplemented the water supply by tapping the Chestnut Hill Reservoir; water from the Sudbury Reservoir and Foss Reservoir was sent through the Sudbury Aqueduct to Chestnut Hill to ...

  8. Assabet River National Wildlife Refuge - Wikipedia

    en.wikipedia.org/wiki/Assabet_River_National...

    The Assabet River National Wildlife Refuge (ARNWR; formerly referred to as the U.S. Army's Fort Devens-Sudbury Training Annex) is a 2,230-acre (9.0 km 2) protected National Wildlife Refuge located approximately 25 miles (40 km) west of Boston and 4 miles (6.4 km) west of the Eastern Massachusetts National Wildlife Refuge Complex Headquarters, along the Assabet River.

  9. Ashland Dam and Spillway - Wikipedia

    en.wikipedia.org/wiki/Ashland_Dam_and_Spillway

    The dam and spillway were built in Ashland, a rural outer suburb west of Boston, in 1885 as one of the later elements of Boston's second major water supply system. This system impounded large sections of the Sudbury River, primarily in Framingham, from where the water was piped toward Boston via the Sudbury Aqueduct. Water impounded by the ...