Harry Woodward
Encyclopedia
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, slowly increasing to an average of 90 minutes apart today.
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
ranger
Park ranger
A park ranger or forest ranger is a person entrusted with protecting and preserving parklands – national, state, provincial, or local parks. Different countries use different names for the position. Ranger is the favored term in the United States, Canada, and the United Kingdom. Within the United...
naturalist
Naturalist
Naturalist may refer to:* Practitioner of natural history* Conservationist* Advocate of naturalism * Naturalist , autobiography-See also:* The American Naturalist, periodical* Naturalism...
who, in 1938-9, first described a mathematical relation
Relation (mathematics)
In set theory and logic, a relation is a property that assigns truth values to k-tuples of individuals. Typically, the property describes a possible connection between the components of a k-tuple...
between the durations and intervals of eruptions from the Old Faithful Geyser
Old Faithful Geyser
Old Faithful is a cone geyser located in Wyoming, in Yellowstone National Park in the United States. Old Faithful was named in 1870 during the Washburn-Langford-Doane Expedition and was the first geyser in the park to receive a name...
. Intervals between eruptions can range from 45 to 125 minutes, averaging 66.5 minutes in 1939, slowly increasing to an average of 90 minutes apart today.