"Nadir" is the point below you - the point opposite to the zenith.
That's the observer's 'zenith'. Since it's referenced to the "observer's head", each observer has a different zenith.
Hc = Calculated altitude. Above the horizon is positive, below the horizon is negative. The range is from - 90º in the nadir to + 90º in the zenith
Less than a degree from the zenith.
How would you define a subtancebased on what you have obsrved
Zenith or apex.
"Nadir" is the point below you - the point opposite to the zenith.
The opposite of zenith (high point, apex) would be nadir(lowest point).Other possible antonyms would be minimum or bottom.In astronomical terms, the point in the sky that is directly over your head is the 'zenith'. The point in the sky that is directly between your feet and down through the Earth is the 'nadir'.
Nadir comes for the arabic nazir, meaning opposite. Nadir is the direction directly below a point. It is in a way the opposite to Zenith. The word is also used in the meaning of the lowest point.
The word "nadir" comes from Arabic "nadir," meaning "opposite." It was borrowed into English from Medieval Latin in the 14th century. In astronomy, nadir is the point on the celestial sphere opposite the zenith and directly below the observer.
The opposite of apex is antapex.(Nadir is the opposite of one use of apex, to mean zenith.)
That's the observer's 'zenith'. Since it's referenced to the "observer's head", each observer has a different zenith.
Hc = Calculated altitude. Above the horizon is positive, below the horizon is negative. The range is from - 90º in the nadir to + 90º in the zenith
When the Sun is directly overhead (at zenith) the point below it is called nadir.
Defining true zenith distance is knowing the difference between Africa and south America.True zenith distance is associated with Greenwich line and meridional zenith distance is defined with the celestial equator which instructs the basin of south america. -AG
The legacy of early Arabic book binding and the technique's developed by crafting them were a hallmark, if not a cultural zenith, in opposed to the metaphorical nadir of the literature contained within it.
Answer1. an extreme state of adversity; lowest point of anything2. the point below the observer that is directly opposite the zenith on the imaginary sphere against which celestial bodies appear to be projected