University Physics, 14th Edition, Young And Freedman, Addison Wesley, 2015.

Create Beautiful Visualizations that Free Your Data to Tell Powerful Truths
“The depth of Barrett Clark’s knowledge shines through in his writing: clear, concise, and confident. Barrett has been practicing all of this stuff in his day job for many years–Postgres, D3, GIS, all of it. The knowledge in this book is real-world and hard-earned!”
–From the Foreword by Obie Fernandez

The Smalltalk-80 system consists of an object-oriented programming language and an integrated collection of tools for interacting with components of that language. In the Smalltalk-80 language, the fundamental way to indicate that something should happen is by sending a message to an object. An object is a representation of information consisting of private memory, and a set of operations to manipulate information stored in the private memory or to carry out some actions relative to that information. Sending a message is the Smalltalk-80 way of asking the object to carry out one of its operations.