ClipArt ETC
An illustration of a man and woman being introduced to each other.

Introductions

An illustration of a man and woman being introduced to each other.

An illustration of men greeting one another wearing kilts.

Men Greeting One Another

An illustration of men greeting one another wearing kilts.

An illustration of a pilgrim being greeted by a Native American.

Pilgrim & Native American

An illustration of a pilgrim being greeted by a Native American.

An illustration of two men shaking hands and kissing each other's cheeks

Shaking Hands

An illustration of two men shaking hands and kissing each other's cheeks

"Start a trough from A. At the moment of its reflection as a crest a B, start a crest at A as shown. The two crests will meet near the middle of the rope. The crest at the point and moment of meeting results from two forces acting in the same direction; their resultatnt is greater than either of the components." -Avery 1895

Constructive Interference

"Start a trough from A. At the moment of its reflection as a crest a B, start a crest at A as shown.…

An illustration of a woman introducing a man to her husband.

Woman Introducing Man

An illustration of a woman introducing a man to her husband.