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In physics, gravity (from Latin gravitas 'weight' [1]) is a fundamental interaction primarily observed as a mutual attraction between all things that have mass.Gravity is, by far, the weakest of the four fundamental interactions, approximately 10 38 times weaker than the strong interaction, 10 36 times weaker than the electromagnetic force, and 10 29 times weaker than the weak interaction.
In the 18–49 key demographic, Grey's Anatomy ranked #13 (the lowest ranking in the series' history). The highest ranking for the 18–49 key demographic was #3 for seasons 3, 4, and 5. Last season, Grey's Anatomy was ranked #5. For the 2014-2015 primetime TV schedule, Grey's Anatomy was the #1 drama in the 18–49 key demographic. [59]