Datastream: Harley-Davidson Engines and Brightness

Datastream: Harley-Davidson Engines

1. 1929-1973: Flathead >>>
2. 1936-1947: Knucklehead >>>
3. 1948-1965: Panhead >>>
4. 1966-1985: Shovelhead >>>
5. 1984-1999: Evolution >>>
6. 1999-present: Twin Cam >>>
7. 2001-present: Revolution

Datastream: Brightness (in candelas per square meter)

1. Computer monitor: 300-400 >>>
2. Flatscreen TV: 500-1,500 >>>
3. Traffic light: 1,000-2,000 >>>
4. Moon: 2,500 >>>
5. Times Square New Year's ball: 24,000

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