Physics

From Wikipedia, a free encyclopedia written in simple English for easy reading.

Physics is the science of matter and how matter interacts.

Contents

[edit] What is physics about?

Physics studies stars, planets and galaxies and other big pieces of matter. Physics also studies small pieces of matter, such as atoms and electrons. Physics studies how things move, and the forces that make them move. For example, physics studies the forces gravity, electricity, magnetism and the forces that hold matter together. Physics also studies sound, light and other waves. Physics studies energy, heat and radioactivity, and even space and time. Physics helps people understand how objects move, how they bend, how they make noise, how hot or cold they will be, and what they are made of at the smallest level.

[edit] Physics uses numbers

Physics is a quantitative science because it is based on numerical measurements. Mathematics is used in physics to make models and predictions of how nature behaves. The predictions are compared to the way the real world works. Physics is always being improved to make a better models of the world.

[edit] Physicists

There are many famous physicists. Galileo studied gravity. Isaac Newton studied light and how planets move. Einstein made a theory for how light can make electrons move, and studied how gravity affects light and space.

Ernest Rutherford said that "Physics is the only real science. The rest are just stamp collecting."

[edit] See also

[edit] External link