Harry Woodward (naturalist)
From Infogalactic: the planetary knowledge core
Harry Woodward was a US ranger naturalist who, in 1938-9, first described a mathematical relation between the durations and intervals of eruptions from the Old Faithful Geyser. Intervals between eruptions can range from 45 to 125 minutes, averaging 66.5 minutes in 1939,[1][2] slowly increasing to an average of 90 minutes apart today.[3]
References
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