CS101 Lecture Notes - Lecture 7: Blu-Ray, Radio Wave, Apple Inc.
Document Summary
Powers of ten: video about digitization representing both largest imaginable data set and the smallest imaginable data set (going from space to the subset of an atom). How data is encoded in our cells and represented in the galaxy. The idea is that we have a human space but there is nothing special about it in comparison with the miniature and the galactic. The meter is defined in relation to our planet. Digitization seems small but it changes everything. Digital: a discreet unit, such as a finger; to be compared with its partner in the world, analog. Everything is transmitted to our body through waves. **- waves are used to transmit frequency modulation (fm) and amplitude modulation (am) am goes over further distances than fm, but fm is clearer than am. The length of a wave from point to point per time is its frequency.
