Concept explainers
BIO Amazing honeybees The survival of a bee colony depends on the ability of bee scouts to locate food and to convey that information to the hive. After finding a promising food source, a honeybee scout returns to the hive and uses a waggle dance to tell its worker sisters the direction and distance to the food.
Recall that light coming directly from the Sun is unpolarized. Bees use the direction of the Sun as a reference for their travel In the hive, the scout bee's waggle dance is in the shape of a flat figure eight (Figure 25.28). The upward direction in the vertical hive represents the direction toward the Sun. The middle line of the scout’s figure eight points in the direction of the food relative to the direction of the Sun. I hus a
Polar molecules are caused to vibrate in all directions perpendicular to the direction of travel of sunlight. When the Sun is rising in the east and you look at the molecules directly overhead, the light from these molecules is
a. unpolarized.
b. linearly polarized along an axis between you and the molecules overhead.
c. linearly polarized parallel to a plane with you, the Sun, and the molecules.
d. linearly polarized perpendicular to a plane with you, the Sun, and the molecules.
e. All of these are correct.
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COLLEGE PHYSICS:VOL.1
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