English heliography meaning in English  •  heliography का अर्थ अंग्रेजी में

Noun

• The description of the sun.
• The system, art, or practice of telegraphing, or signaling, with the heliograph.
• An early photographic process invented by Nic phore Niepce, and still used in photo-engraving. It consists essentially in exposing under a design or in a camera a polished metal plate coated with a preparation of asphalt, and subsequently treating
• Photography.