File:Britannica Spectroheliograph photo.jpg

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Original file ‎(2,117 × 2,669 pixels, file size: 787 KB, MIME type: image/jpeg)

Description
English: Spectroheliograph of the sun showing right and left handed sunspot vortices.
Date
Source Encyclopædia Britannica, 11th ed., 1911, v. 25, between pp. 618 and 619
Author George Ellery Hale
Permission
(Reusing this file)
Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

Captions

Spectroheliograph of the sun showing right and left handed sunspot vortices.

Items portrayed in this file

depicts

sunspot

inception

7 October 1908Gregorian

media type

image/jpeg

checksum

c26adf28f8902cacf9f2f6acbe632b1daf80f30a

determination method: SHA-1

data size

805,915 byte

height

2,669 pixel

width

2,117 pixel

File history

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Date/TimeThumbnailDimensionsUserComment
current20:02, 9 December 2010Thumbnail for version as of 20:02, 9 December 20102,117 × 2,669 (787 KB)Bob Burkhardt{{Information |Description={{en|1=Spectroheliograph of the sun showing right and left handed sunspot vortices.}} |Source=''Encyclopædia Britannica'', 11th ed., 1911, v. 25, between pp. 618 and 619 |Author=George Ellery Hale |Date=October 7, 1908 |Permiss

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