Experiment with image compression by downloading this Horses image and working with in Adobe Photoshop
Download this Horses image
Open the image in Adobe Photoshop
Go to the File menu and choose File>Save As
In the window that pops up, from the Format dropdown menu choose JPEG
Change the filename to Low Quality
Click Save
In the popup that follows make sure the Preview box is checked
Adjust the Quality slider to small file and see how it affects the image preview and the file size values
Adjust the Quality slider to large file and see how it affects the image preview and the file size values
RAW & JPEG Editing
Explore the features of Adobe Camera Raw & Lightroom and the advantages of shooting in RAW by downloading and then editing the JPEG and RAW versions of the same picture found below:
Lightroom App & Web App on Chromebook
Use the Adobe Lightroom App & Web App Workflow on Chromebook when editing your images on a Chromebook.
Wikipedia Article On Image Compression
Wikipedia Article on Color Space
Dry Creek Photo Using Printing Profiles
United States Copyright Office Copyrights Basics
U.S. Government Flier on Fair Use
The Public Domain
For a variety of reasons, works that are in the public domain are not protected by intellectual property rights (i.e. they are no longer or never were protected by copyright and patent laws). The following list contains a number of places where you can find works that are in the public domain.
Librivox Audiobooks of works in the public domain
Project Gutenberg ebooks of works in the public domain, also includes some sheet music.
Choral Public Domain Library Music in the public domain
International Music Score Library Project / Petrucci Music Library Music in the public domain
Mutopia Project Music in the public domain
Open Hymnal Project This site has a very large collection of hymns that are in the public domain. It hosts PDFs of lyrics, and scores. It also has midi and mp3 files.
Werner Icking Music Archive Music in the public domain. This site also includes a long list of links to other free sheet music.
Mickey, Disney, and the Public Domain: a 95-year Love Triangle This article at the Duke University Law School chronicles the fight over Mickey Mouse's entry into the public domain.