GEO 155 - Latitude and longitude; radiation

GEO 155 - Latitude and longitude; radiation - ;Radiation...

Info icon This preview shows pages 1–2. Sign up to view the full content.

Latitude and longitude; Radiation 23:24 Latitude and Longitude Earth as a Geoid Geodesy The science that determines Earth’s shape and size by surveys and mathematical  calculations. Newton theorized that earth is an oblate ellipsoid, with the oblateness occurring at the  poles, because of the centrifugal force pulled around the equator (equatorial bulge) Geoid Describes earth’s shape The shape of earth is earth-shaped Eratosthenes Greek astronomer and the librarian of Alexandria Calculated Earth’s circumference to a high level of accuracy, in 247 BC Shadow cast by obelisk to well of Syene formed an arc of Earth’s circumference.  Was  equal to 5000 stadia. Multipled that by 50 and was off by only 2,000 from actual  measurement Ptolemy Divided circle into 360 degrees Latitude An angular distance north or south of the equator Line connecting all points along the same latitudinal angle is a parallel.   Latitude is the name of the angle (49 degrees North) and parallel names the line (49 th  parallel), and both indicate distances North of the equator
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern