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Gravity dominates the universe. It holds the Earth, the Sun, and the Milky Way together, and it keeps our feet firmly planted on the surface of our planet. When an object goes up, it is pulled back to Earth by gravity. These facts make it easy to conclude that gravity is a strong force, but it is actually a very weak force whose confusing and contradictory nature has stumped many investigators. Gravity explains how two of the greatest scientific minds in history--Isaac Newton and Albert Einstein--finally unraveled most of the mystery surrounding this peculiar force, and how scientists today...

Atoms, Molecules, and Compounds goes behind the scenes of day-to-day chemistry to explore the atoms that govern chemical processes. In clear language, this exciting book shows how the interactions between simple substances such as salt and water are crucial to life on Earth and how those interactions are predestined by the atoms that make up the molecules. In addition, the stories of the scientists whose discoveries shaped the modern world, such as Niels Bohr and Albert Einstein, are presented here in gripping detail.

This volume examines Einstein's theory of relativity, and how it applies to gravity, space, and time.

This title comprehensively explains quantum theory and its everyday uses in our world.