Lesson plan
Data mile
In radar-related subjects and in JTIDS, a data mile is a unit of distance equal to . An international mile is 0.88 data mile. The speed of light is , or about one foot per nanosecond. If it were exactly one foot per nanosecond, and a target was one data mile away, then the radar return from that target would arrive 12 microseconds after the transmission. (Recall that radar was developed during World War II in America and England, while both were using English units. It was convenient for them to relate 1 data mile to 12 microseconds.)
Article summary
In radar-related subjects and in JTIDS, a data mile is a unit of distance equal to . An international mile is 0.88 data mile. The speed of light is , or about one foot per nanosecond. If it were exactly one foot per nanosecond, and a target was one data mile away, then the radar return from that target would arrive 12 microseconds after the transmission. (Recall that radar was developed during World War II in America and England, while both were using English units. It was convenient for them to relate 1 data mile to 12 microseconds.)
Key claims
No claims recorded.
Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.