What is polarization?

polarization noun (DIVIDING)

the act of dividing something, especially something that contains different people or opinions, into two completely opposing groups: ... Our goal is a lively discussion, not polarization.

Polarization is a concept that comes from science, and it involves light, radiation, or magnetism moving in specific directions. ... Outside science, polarization usually refers to how people think, especially when two views emerge that drive people apart, kind of like two opposing magnets.

Polarization, a property of certain electromagnetic radiations in which the direction and magnitude of the vibrating electric field are related in a specified way.

Common examples of surfaces that reflect polarized light are undisturbed water, glass, sheet plastics, and highways. In these instances, light waves that have the electric field vectors parallel to the surface are reflected a greater degree than those with different orientations.

Depending on how the electric field is oriented, we classify polarized light into three types of polarizations: Linear polarization: the electric field of light is confined to a single plane along the direction of propagation. Elliptical polarization: the electric field of light describes an ellipse.

Polarization (also polarisation) is a property applying to transverse waves that specifies the geometrical orientation of the oscillations. In a transverse wave, the direction of the oscillation is perpendicular to the direction of motion of the wave. ... In linear polarization, the fields oscillate in a single direction.

Explanation: Hope this help ;)

1. read the following excerpt from franklin d. roosevelt's "fireside chat 19":

on the other side of the picture, we must learn also to know that guerilla warfare against the germans in, let us say serbia or norway, us; that a successful russian offensive against the germans us; and that british successes on land or sea in any part of the world strengthen our hands.

remember always that germany and italy, regardless of any formal declaration of war, consider themselves at war with the united states at this moment just as much as they consider themselves at war with britain or russia. and germany puts all the other republics of the americas into the same category of enemies. the people of our sister republics of this hemisphere can be honored by that fact.  

the true goal we seek is far above and beyond the ugly field of battle. when we resort to force, as now we must, we are determined that this force shall be directed toward ultimate good as well as against immediate evil. we americans are not destroyers — we are builders.

analyze the effectiveness of this excerpt. how does it function within the speech as a whole? how does the structure of the excerpt to convey the speech's purpose and key points? support your argument with evidence from the speech. (10 points)