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Others Like “Rock On! Recording Digital Data with Magnets”

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Science Fair Project Idea
This is a challenging first computer science project. You'll learn the basics of how digital devices can represent numbers using only 0's and 1's, and you'll write a JavaScript program to convert numbers between binary, decimal and hexadecimal notation. Read more
CompSci_p005
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Time Required Short (2-5 days)
Prerequisites You should be able to:
  1. write a basic HTML file with a text editing program (like Notepad);
  2. create HTML [[ SourceCode []<FORM>[] SourceCode ]] elements for user input;
  3. write basic JavaScript functions using [[ SourceCode []Arrays[] SourceCode ]], [[ SourceCode []Strings[] SourceCode ]] and simple flow control statements (e.g., [[ SourceCode []if...else[] SourceCode ]], and [[ SourceCode []for[] SourceCode ]] or [[ SourceCode []while[] SourceCode ]] loops).
Help is available for each of these topics. See the Introduction section for details.
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
Today magnetic recording is used in audio and video cassette recorders, and computer disk drives. Did you know that you can also use an electromagnet to record and play back from a steel wire? In fact, this is how magnetic recording got started. This project shows you how to build a simple wire recorder. Read more
Elec_p015
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Time Required Long (2-4 weeks)
Prerequisites None
Material Availability Specialty items
Cost Average ($50 - $100)
Safety Eye protection required during construction
Science Fair Project Idea
This is a good first-time programming project. You'll learn how to use JavaScript to create a simple program to alphabetize lists of words. You'll be able to run your program in your Web browser. Read more
CompSci_p002
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Time Required Short (2-5 days)
Prerequisites Familiarity with Web browser and text editing programs
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
You have probably read all about forms of alternative energy like solar and wind power. But what about human power? With the aid of a coil of wire and some magnets, you can generate electricity with nothing more than a flick of your wrist. In this project, you will build a small hand-powered electrical generator that can power a series of tiny lights. Get ready to save the planet and get some exercise at the same time!