Author Question: The ratio of the speed of light in a vacuum to the speed of light in a substance is defined as that ... (Read 221 times)

khang

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The ratio of the speed of light in a vacuum to the speed of light in a substance is defined as that substance's ___________________ _ ___________________ _ ___________________ _.
 Fill in the blank(s) with correct word

Question 2

____________________ provide much weather data, including wind speed and direction, but they are typically launched only over land.
 Fill in the blank(s) with correct word



anoriega3

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Answer to Question 1

index of refraction

Answer to Question 2

Rawinsondes



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