Explains in simple text and illustrations what is known about the force of gravity.

"Claudia de Rham has been playing with gravity her entire life. As a diver, experimenting with her body’s buoyancy in the Indian Ocean. As a pilot, soaring over Canadian waterfalls on dark mornings before beginning her daily scientific research. As an astronaut candidate, dreaming of the experience of flying free from Earth’s pull. And as a physicist, discovering new sides to gravity’s irresistible personality by exploring the limits of Einstein’s...

In this video lesson, Paul Andersen explains how gravitational field strength is directly related to the mass of an object and indirectly related to the square of the distance from the center of mass. The equation for gravitational field strength was discovered by Sir Isaac Newton and contains a gravitational constant.--Publisher.

In this video lesson, Paul Andersen explains how a vector field shows the distribution of vector quantities. In AP Physics I, students should be able to map and understand gravitational vector fields. In AP Physics II, students should be able to map and understand vector fields related to magnetism.--Publisher.

"The earth is round, so why don't some people hang upside down? The answer is gravity! Young readers can explore the concept of gravity with vibrant, full-color photos, clear text, and critical thinking questions"--Provided by publisher.

"Mathematics is far more than just the language of science. It is a critical underpinning of nature. The famed physicist Albert Einstein demonstrated this in 1915 when he showed that gravity—long considered an attractive force between massive objects—was actually a manifestation of the curvature, or geometry, of space and time. But in making this towering intellectual leap, Einstein needed the help of several mathematicians, including Marcel Grossmann,...