Art Resource - AR926635

Conceptually similar

Pierre Janssen and Joseph Norman Lockyer, French and English astronomers, 1868.

AR926631

Jules Pierre Cesar Janssen, French astronomer, 1893.

AR925619

Reverse of a medal commemorating the bright comet of 1577.

AR925580

Medal commemorating Pierre Janssen and Norman Lockyer, French and English astronomers, 1868.

Medal commemorating Pierre Janssen and Joseph Norman Lockyer, French and English astronomers, 1868. In 1868, working independently of each other on spectroscopic studies of solar prominences, Pierre Jules Cesar Janssen (1824-1907) and Joseph Norman Lockyer (1836-1920) both observed a yellow line in the solar spectrum. Lockyer named it Helium from helios (sun). Reverse of a commemorative medal showing Phaeton driving his father Apollo's chariot near the sun.

Unique Identifier AR926635

Type Image

Purpose Public

Size 4237px × 4122px

Photo Credit HIP / Art Resource, NY

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