heliographs (measuring devices)
Identification code: 300197850
Español: heliógrafos (measuring devices (traducció pendent)) | Català: heliògraf (measuring devices (traducció pendent))
Hierarchy classification:
Alternative term/s
- heliograph
Anotations
Scope note:
Instruments that record the duration of sunshine and provide qualitative measurements of the amount of sunshine by the action of the sun's rays on blueprint paper.
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