The Solar Surface During the Past Twelve Years - A Review of Sun-Spot Observations Made at Alta, Iowa, from 1890 to 1902

Authors

David E. HaddenFollow

Document Type

Research

Abstract

The following paper is a resume of a series of sun-spot observations commenced by the writer in 1890, August 1st, and continued without interruption, except by cloudy weather and other unavoidable causes —such as sickness or absence from the city— until the present time.

Publication Date

1902

Journal Title

Proceedings of the Iowa Academy of Sciences

Volume

10

Issue

1

First Page

74

Last Page

98

Copyright

©1902 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

Recommended Citation

Hadden, David E. (1902) "The Solar Surface During the Past Twelve Years - A Review of Sun-Spot Observations Made at Alta, Iowa, from 1890 to 1902," Proceedings of the Iowa Academy of Science, 10(1), 74-98.
Available at: https://scholarworks.uni.edu/pias/vol10/iss1/14