hour angle in a sentence
1) Solar noon provides the reference for the hour angle .
angle collocations
2) At Solar Noon, the hour angle is zero.
3) This is because the hour angles are equally spaced around the dial.
hour angle example sentences
4) The Greenwich hour angle of the mean Vernal Equinox.5) The hour angle of the Vernal Equinox.
6) This will introduce error in sundials that do not have equal hour angles .
7) The hour angle defines the point in the rotation relative to Solar Noon.
8) The hour angle which is the stage of the Earth's rotation relative to Solar Noon.
9) The hour angle of the vernal point is, by definition, the observer's sidereal time.
10) The latitude of the geographic position is called declination, and the longitude is usually called the hour angle .
11) Change of observing condition constraints (to better conditions, including any changes to airmass or hour angle constraints).
12) GMHA = Universal Time − Offset, the Greenwich Mean hour angle of the mean (fictitious) Sun.
13) The local hour angle , LHA, is the difference between the AP longitude and the hour angle of the observed object.
14) The local hour angle, LHA, is the difference between the AP longitude and the hour angle of the observed object.
15) Now of the various columns of information, one needs to be concerned with those which detail Greenwich hour angle and Declination.
example sentences with hour angle
16) For any given Universal Time, the Greenwich hour angle of a planet is the longitudinal position of the planet westwards from the prime Meridian, from 0 to 360°.17) The star was setting rapidly, and was already fairly far to the west at sunset, with and hour angle of more than five hours, and airmass of about three.
18) Since 1984 GMST has not been the Greenwich hour angle of the mean equinox, and the equation of the equinoxes has not been the true right ascension of the mean equinox.
19) The Greenwich hour angle of the true (instantaneous) Vernal Equinox of date, which includes the "nutation in right ascension" or "equation of the equinoxes".
20) At 09:00 Solar time, solar noon is three hours away, thus the hour angle is -45 degrees.
21) Before looking at declination and hour angle , it will be helpful to look at the Earth's orbit around the Sun and its rotation around its own axis.
22) Given the three magnitudes: local hour angle (LHA), observed body's declination (dec.), and assumed latitude (lat), the altitude Hc and azimuth Zn must be computed.
23) Apparent (or true) solar time can be obtained by measurement of the current position ( hour angle ) of the Sun, or indicated (with limited accuracy) by a sundial.
24) Unlike the simpler vertical declining sundial, this type of dial does not always show hour angles on its sunside face for all declinations between east and west.
25) Since the hour angles are not evenly spaced, the equation of time corrections cannot be made via rotating the dial plate about the gnomon axis.
26) It is common for inexpensive mass-produced decorative sundials to have incorrect hour angles , which cannot be adjusted to tell correct time.
27) Greenwich Apparent Sidereal Time (GAST) is the hour angle of the vernal equinox at the prime meridian at Greenwich, England.
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