Glossary term: Nadir
Description: Le nadir est défini comme le point situé directement sous l'observateur. Il est relatif à la position de l'observateur, puisque le nadir d'une personne à Londres sera différent de celui d'une personne à Pékin ou au Cap. Mesuré en angles, il se situe à 90 degrés de l'horizon. L'opposé du nadir est appelé le zénith.
Related Terms:
See this term in other languages
Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".
