PCS 181 Final: Final Prep.docx

• School: Ryerson University
• Department: Physics
• Course: PCS 181
• Professor: Margaret Buckby

Document Summary

The scientific method - body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge: observation, hypothesis, experiment, conclusion, reproducibility (someone else can repeat the experiment) Electromagnetic radiation (often abbreviated e-m radiation or emr) is a phenomenon that takes the form of self-propagating waves in a vacuum or in matter. It consists of electric and magnetic field components which oscillate in phase perpendicular to each other and perpendicular to the direction of energy propagation. A small and somewhat variable window of frequencies is sensed by the eyes of various organisms; this is what we call the visible spectrum, or light. Em radiation carries energy and momentum that may be imparted to matter with which it interacts. Wave propagation is any of the ways in which waves travel. The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation.