The zenith is an imaginary point directly “above” a particular location, on the imaginary celestial sphere. “Above” means in the vertical direction (plumb line) opposite to the gravity direction at that location (nadir). The zenith is the “highest” point on the celestial sphere.

In addition to being easy to use, one of the main benefits of the Alt-Az coordinate system is that it is very useful in deciding when an object is well-placed for viewing, since one of the coordinates (altitude) describes the height of an object above the horizon.

Solstice day arcs as viewed from 20° latitude. The Sun culminates at 46.56° altitude in winter and 93.44° altitude in summer. In this case an angle larger than 90° means that the culmination takes place at an altitude of 86.56° in the opposite cardinal direction.

To average zenith angles: [(360-Reverse Z) + direct Z]/2 • Use care with units. The EDM component of a total station operates on the line-of-sight. Therefore, all observed distances are along that line of sight. Most calculators will require each of these angles to be expressed in decimal degrees.

Differences in height between two points are usually measured with a device called a level . It is called a level because it gives a true horizontal line . The height of each point is then measured by its vertical distance above or below this horizontal line.

1.83 m

Steps to measure your height First, find a flat, uncarpeted section of floor and a flat section of wall. Take off your shoes. Remove braids, headbands, or anything else on your head that may get in the way of an accurate measurement.

As we go through the day, the cartilage in our knees and spine slowly compresses causing us to shrink a little. When we sleep at night the cartilage has a chance to rest and goes back to its normal size. On average we are about 1cm taller in the morning than we are at night.

NBA teams are now required to send in the heights of their players as measured by a team doctor and without the stars wearing shoes, according to the New York Times.

The NBA instituted a new measuring standard starting with the 2019–20 season, measuring players without shoes. Due to this change, the height of numerous players declined, from one to three inches, while others grew.

1.98 m