25.4. References http://www.ck12.org
25.4 References
1.. http://commons.wikimedia.org/wiki/File:HansChristian%C3%98rsted_daguerreotype.jpg. Public Do-
main
2. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
3. Hand by Wizard191, modified by Christopher Auyeung for CK-12 Foundation. Hand from http://commons
.wikimedia.org/wiki/File:Right-hand_grip_rule.svg. CC BY-NC 3.0 (hand available under public domain)
4. Image copyright Peter Kim, 2013. http://www.shutterstock.com. Used under license from Shutterstock.com
5. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
6. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
7. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
8. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
9. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
10. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
11. Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
12. User:Tomia/Wikimedia Commons. http://commons.wikimedia.org/wiki/File:Hydroelectric_dam.svg. CC
BY 2.5
13. Christopher Auyeung. CK-12 Foundation. CC-BY-NC-SA 3.0
14. Christopher Auyeung. CK-12 Foundation. CC-BY-NC-SA 3.0
15. Christopher Auyeung. CK-12 Foundation. CC-BY-NC-SA 3.0
