#### Overview of this book

This book gives readers practical insight into the mathematical and physics principles necessary to properly implement physics within Unreal Engine 4. Discover how to manipulate physics within Unreal Engine 4 by learning basic real-world mathematical and physics concepts that assist in the implementation of physics-based objects in your game world. Then, you'll be introduced to PhAT (Physics Asset Tool) within Unreal Engine 4 to learn more about developing game physics objects for your game world. Next, dive into Unreal Engine 4’s collision generation, physical materials, blueprints, constraints, and more to get hands-on experience with the tools provided by Epic to create real-world physics in Unreal Engine 4. Lastly, you will create a working Vehicle Blueprint that uses all the concepts covered in this book, as well as covering advanced physics-based topics.
Unreal Engine Physics Essentials
Credits
www.PacktPub.com
Preface
Physics Asset Tool
Constraints
Physics Damping, Friction, and Physics Bodies
Materials
Index

## The scientific notation

This is a method in which we can easily write very large or significantly small numbers without having to express the entire length of the number, meaning writing a bunch of zeroes. The use of scientific notation is not very common when you use Unreal Engine 4 as a designer or an artist, but as a programmer or a technical designer who uses blueprints or even C++ coding in the engine, the use of scientific notation can deem itself useful.

Let's take a look at some examples of both large and small numbers that are expressed in their scientific notation. To keep things as simple as possible, these examples will use the base of 10 for ease of clarity:

• 1,000 (1 thousand) – 1 * 10^3

• 100,000 (1 hundred thousand) – 1 * 10^5

• 1,000,000 (1 million) – 1 * 10^6

• .01 (1 hundredth) – 1 * 10^-2

• .001 (1 thousandth) – 1 * 10^-3

• .0001 (1 ten thousandth) – 1 * 10^-4