Lecture 5- 2.5.docx - Basic Geodesy Geography o The first person to use the word \u201cgeography\u201d was Eratosthenes(276-194 BC Geography goes back 2,200

Lecture 5- 2.5.docx - Basic Geodesy Geography o The first...

This preview shows page 1 - 2 out of 3 pages.

Basic Geodesy Geography o The first person to use the word “geography” was Eratosthenes (276-194 BC) Geography goes back 2,200+ years! Eratosthenes was a Greek mathematician, geographer, poet, and astronomer Geography matters to GIS o Geography with its location and its associated geometry is the BASIS OF GIS and has a very long history o Geographers study and model space and make major contributions to geospatial science Geodesy o The science of the size and shape of the Earth. Questions on the size and shape of our mother earth go way back and three dominant Earth models have evolved: Flat Spherical Ellipsoidal o Circumference of the Earth is about 25,000 miles Flat Earth o Today, a “Flat Earth Society” does not strike anyone as being a serious group, but at the time when people could observe only very local phenomena, it was perfectly reasonable. o From the ground it is virtually impossible to observe a curve in the Earth Spherical Earth o Aristotle (4 th century BC – 330 BC) hypothesized a spherical Earth. He made three good arguments: Ships appear to sink at the “edge” not plummet, and they do return Stars hold different positions in the night sky in different places. Polaris (North
Image of page 1
Image of page 2

You've reached the end of your free preview.

Want to read all 3 pages?

  • Fall '18
  • Geoid

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

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes