Images:
Homepage:
Loudspeaker Picture - the-gadgeteer.com

    Introduction:
        Earbud Parts Picture - www.explainthatstuff.com

    Earbuds Vs. Loudspeakers:
        Loudspeaker Picture - www.ascendacoustics.com

    Electromagnetism:
        Loudspeaker Picture - en.wikibooks.org

Information
    Woodford, Chris. (2006/2016) Headphones. Retrieved from http://www.explainthatstuff.com/headphones.html [Accessed Nov. 22, 2016]

    Knight, Randall Dewey. Physics for Scientists and Engineers: A Strategic Approach: With Modern Physics. Boston: Pearson, 2013. Print.

    "How do speakers work?" http://www.physics.org/article-questions.asp?id=54

    "Electromagnet" https://en.wikipedia.org/wiki/Electromagnet

    "GCSE Science/Uses of electromagnets" https://en.wikibooks.org/wiki/GCSE_Science/Uses_of_electromagnets

Bibliography