What email address or phone number would you like to use to sign in to Docs.com?
If you already have an account that you use with Office or other Microsoft services, enter it here.
Or sign in with:
Signing in allows you to download and like content, and it provides the authors analytical data about your interactions with their content.
Embed code for: How do steam engines work? | Who invented steam engines?
Select a size
A simple introduction to steam engines, including photos and illustrations showing the parts inside and how they work.