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  2. Longitude by chronometer - Wikipedia

    en.wikipedia.org/wiki/Longitude_by_chronometer

    Mechanical boxed Marine Chronometer used on Queen Victoria's royal yacht, made about 1865 Omega 4.19 MHz (4 194 304 = 2 22 high frequency quartz resonator) Ships Marine Chronometer giving an autonomous accuracy of less than ± 5 seconds per year, French Navy issued,1980

  3. GCSE - Wikipedia

    en.wikipedia.org/wiki/GCSE

    Each GCSE qualification is offered as a specific school subject, with the most commonly awarded ones being: English literature, English language, mathematics, science (double & triple), history, geography, art, design and technology (D&T), business studies, economics, music, and modern foreign languages (E.g. Spanish, French, German) (MFL).

  4. Harris Science Academy East London - Wikipedia

    en.wikipedia.org/wiki/Harris_Science_Academy...

    A number of subjects are universal in years seven and eight but optional from year nine. These subjects may be chosen by students in year eight for studies at GCSE level. They include the humanities of history and geography, the languages of German, French and Latin, computer science, music, photography and art.

  5. Marine chronometer - Wikipedia

    en.wikipedia.org/wiki/Marine_chronometer

    A marine chronometer is a precision timepiece that is carried on a ship and employed in the determination of the ship's position by celestial navigation.It is used to determine longitude by comparing Greenwich Mean Time (GMT), and the time at the current location found from observations of celestial bodies.

  6. Time geography - Wikipedia

    en.wikipedia.org/wiki/Time_geography

    Time geography or time-space geography is an evolving transdisciplinary perspective on spatial and temporal processes and events such as social interaction, ecological interaction, social and environmental change, and biographies of individuals. [1]

  7. Glossary of geography terms (N–Z) - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_geography_terms...

    This glossary of geography terms is a list of definitions of terms and concepts used in geography and related fields, including Earth science, oceanography, cartography, and human geography, as well as those describing spatial dimension, topographical features, natural resources, and the collection, analysis, and visualization of geographic ...

  8. Geologic time scale - Wikipedia

    en.wikipedia.org/wiki/Geologic_time_scale

    The geologic time scale, proportionally represented as a log-spiral with some major events in Earth's history. A megaannus (Ma) represents one million (10 6) years.. The geologic time scale or geological time scale (GTS) is a representation of time based on the rock record of Earth.

  9. Geographic coordinate system - Wikipedia

    en.wikipedia.org/wiki/Geographic_coordinate_system

    A geographic coordinate system (GCS) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude. [1] It is the simplest, oldest and most widely used type of the various spatial reference systems that are in use, and forms the basis for most others.