Computers
| Mathematics |
| Computers | Puzzles and Games | Mathematical Methods |
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October, 1999. Modeling the Atomic Universe |
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| Cost:$0-100 | Difficulty:  |
Danger 1: (No hazards) | Utility:  |
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March, 1997. Algorithm of the Gods |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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June, 1995. Computing Bouts of the Prisoner's Dilemma |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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April, 1995. Computerized Restoration of Juvenile Art |
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| Cost:$0-100 | Difficulty:  |
Danger 1: (No hazards) | Utility: |
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October, 1994. Building an Electronic Neuron |
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| Cost:$100+ | Difficulty: |
Danger 2: (Minor injury possible) | Utility: |
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September, 1992. Neurons for Computers |
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| Cost:$0-100 | Difficulty:  |
Danger 1: (No hazards) | Utility: |
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July, 1992. Survival of the Fittest Bits |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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June, 1968. A Plan for an Analogue Computer That Can Be Built for about $40 |
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| Cost:$0-100 | Difficulty: |
Danger 2: (Minor injury possible) | Utility: |
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May, 1953. About the Making of Simple Mathematical Machines and the Observation of Jupiter |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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September, 1983. Caustics: Mathematical Curves Generated By Light Shined Through Rippled Plastic |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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March, 1983. How to Analyze a City Traffic-Light System From the Outside Looking in |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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August, 1958. An Excursion into the Problem of Measuring Irregular Areas |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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October, 1987. Now There Is a Rubik's Magic, a New Puzzle That Provides a Study in Permutation Operators |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
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June, 1987. Puzzles in Two and Three Dimensions and Ways to Simplify Their Solution |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
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December, 1986. Methods for Going Through a Maze Without Becoming Lost or Confused |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
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June, 1986. Mirrors Make a Maze So Bewildering That the Explorer Must Rely on a Map |
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| Cost:NA | Difficulty: NA | Danger 0: (NA) | Utility: |
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May, 1985. Cat's Cradles and Other Topologies Formed with a Two-Meter Loop of Flexible String |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |
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March, 1955. About Little Computers That Solve Puzzles and an Experiment on the "Gyroscopic Eye" |
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| Cost:$0-100 | Difficulty: |
Danger 1: (No hazards) | Utility: |