CONS 127 Lecture 3: CONS 127 LEC 3 CONSERVATION OBSERVING EARTH FROM SPACE UBC 2019
23 Feb 2019
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Document Summary
Just late 2018 they redefined the kilo: until then it was a rock held at a paris museum. It is now defined as the force generated by an electric current. Measuring what we observe: original measurement metrics were derived from the human body or common travel distances, hands, arms. Initially thomas jefferson rejected the metric system due to being too french. In 1866 metric measurements became legal but are still not the standard. Conversion catastrophes: mars climate orbiter was supposed to launch and orbit mars but when it got to space, it blew up, engineers failed to convert units from imperial to metric. How we represent sclas on maps: coarse and fine scale, maps that give large areas use small scales (ex. 1:40,000,000 for seeing the globe, typically the mercator: maps that give small areas use large scales (ex.
