Concept information
Preferred term
HELIOGRAPHS
Definition
- HELIOGRAPHS are instruments that records the duration of sunshine and gives a qualitative measure of the amount of sunshine by the action of the sun?s rays upon blueprint paper; a type of sunshine recorder. (en)
Broader concept
URI
https://gcmd.earthdata.nasa.gov/kms/concept/e3211dbd-5432-4b13-b5ca-2ac11981f1e8
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