The twinkling of starlight and the focusing of images by lenses are both due to ________ of light
A) transmission B) refraction C) aberration D) reflection E) polarization
B
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As an object is lowered into a deep hole in the surface of the Earth, which of the following must be assumed in regard to its potential energy?
a. increase b. decrease c. remain constant d. cannot tell from the information given
What type of tool displays preferred content from several sources, such as RSS feeds, social networking tools, and social news websites?
A. connector B. convergence C. aggregator D. portal
What is the highest-order maximum for wavelength 454 nm that can be obtained with a grating with 375 lines per mm?
a. 5 b. 11 c. 6 d. 34 e. 4
Which gases are added to Earth's atmosphere by volcanic eruptions?
A. carbon dioxide, ozone, and methane B. carbon dioxide, water vapor, and nitrogen C. nitrogen, oxygen, and ammonia D. ammonia, methane, and oxygen