Disney Educational - Bill Nye The Science Guy: The Moon
America's most loveable nerd does the moonwalk in Bill Nye the Science Guy: The Moon. Humor and quirkiness are Bill Nye's tools as he teaches the young and old about the orbit and phases of the moon. Included in this episode is an interview with Harrison Schmidt, the last astronaut to walk on the moon. Using simple experiments and wacky visuals, this awesome force of nature becomes instantly fathomable.
Disney Educational - Bill Nye The Science Guy - Gravity
Gravity is a constant force affecting many aspects of our lives, but people seldom think of it. It is the reason the Earth, the moon, and other objects in the solar system are round. In Bill Nye the Science Guy: Gravity, the "standup scientist" talks about the importance of understanding the force that keeps mankind firmly on the ground.
Presenting the fundamental concepts that are required for further study and research in this field, Principles of Biomechanics focuses on biosystems and the human body in particular. After a brief introduction to the concepts of biosystem modeling, the book discusses elementary mechanics, including methods of analysis, and introduces the human skeletal anatomy. Subsequent chapters address the mechanics of deformable bodies, dynamics, tissue biomechanics, ergonomics, kinematics, fluid mechanics, and circulatory systems. With a wide range of examples and problems, this complete text also provides numerical procedures and specific applications in performance, injury, and rehabilitation.
Edited by: stovokor - 17 April 2009
Reason: Image uploaded to our server, please, do it yourself in the future. Also insert the book details in the boxs instead of manually pasting them in the details panel :)
from the Introduction: Have you ever seen pictures of astronauts floating in space? Have you ever wondered why we do not float off the earth? When you push open a door, you are using a force. Forces are pushes or pulls. Forces make objects move. One force, called gravity, always pulls us toward earth. It keeps us from floating off into space. Even astronauts floating in a space shuttle are being pulled toward earth by gravity. They are floating because the spaceship is also being pulled toward earth. Gravity makes us and every object fall toward earth when dropped. We measure the force of gravity by weighing objects. You can find your weight by standing on a bathroom scale. Gravity pulls you down against the scale. Your weight is the force gravity exerts on you. Weight is measured in pounds (lb) or kilograms (kg). Pounds are divided into ounces (oz). Kilograms are divided into grams (g). The weights of small things, like medicines, are measured in ounces or grams. In this book, you will learn how to change one kind of measurement, like kilograms, into another such as pounds.
