What is hour circle?

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1. Hour circle – Wikipedia

In astronomy, the hour circle, which together with declination and distance (from the planet’s centre of mass) determines the location of any celestial object, is the great circle through the object and the two celestial poles. As such, it is a higher concept than the meridianas defined in astronomy, which takes account of the terrain and depth to the centre of Earth at a ground observer’s location. The h…

From en.wikipedia.org

2. hour circle | astronomy | Britannica

hour circle, in astronomy, any great circle (similar to longitude) on the celestial sphere that passes through the celestial poles— i.e., is perpendicular to the celestial equator. The declination of a celestial object is measured along its hour circle. The hour circle that at any moment is passing through an observer’s zenith is his meridian.

From www.britannica.com

3. Hour circle Definition & Meaning – Merriam-Webster

01/12/2017 · Definition of hour circle : a circle on the celestial sphere that passes through both celestial poles Examples of hour circle in a Sentence Recent Examples on the Web …

From www.merriam-webster.com

4. What Is an Hour Circle? | Did You Know It?

22/03/2018 · You’d have approximated something called an hour circle. If you were careful about slicing precisely through the middle, you’d also have created a geometric figure known as a great circle. This concept of drawing great circles on round objects is an old one, but it still influences our scientific measurements and perceptions about time. The idea underpins Earth’s longitude …

From www.didyouknow.it

5. Hour circle Definition & Meaning – Dictionary.com

hour circle A great circle passing through the poles of the celestial sphere and intersecting the celestial equator at right angles. An hour circle is equivalent to a meridian on Earth and is used in describing the position of a celestial body with respect to an observer’s celestial meridian. See more at hour angle.

From www.dictionary.com

6. Hour circle definition and meaning | Collins English …

Hour circle definition: a great circle on the celestial sphere passing through the celestial poles and a… | Meaning, pronunciation, translations and examples

From www.collinsdictionary.com

7. Hour Circle — from Eric Weisstein’s World of Astronomy

Hour Circle A great circle passing through the celestial poles. The position of the hour circle and the azimuthal coordinate of a celestial body lying on it is specified by its right ascension . Celestial Pole, Hour Angle, Meridian, Right Ascension © 1996-2007 Eric W. Weisstein

From scienceworld.wolfram.com

8. hour angle | astronomy | Britannica

hour angle, in astronomy, the angle between an observer’s meridian (a great circle passing over his head and through the celestial poles) and the hour circle (any other great circle passing through the poles) on which some celestial body lies.

From www.britannica.com

9. What is Circle Time? – TheSchoolRun

Circle Time is a popular activity that’s used in many primary schools to help develop positive relationships between children. It aims to give them tools to engage with and listen to each other. It’s often used as an opportunity to solve problems that are affecting the class, for example too much talking during lessons, or someone being …

From www.theschoolrun.com

10. Hour – Wikipedia

An hour ( symbol: h; also abbreviated hr) is a unit of time conventionally reckoned as 1⁄24 of a day and scientifically reckoned as 3,599–3,601 seconds, depending on conditions. There are 60 minutes in an hour, and 24 hours in a day. The hour was initially established in the ancient Near East as a variable measure of 1⁄12 of the night or daytime.

From en.wikipedia.org

09/05/2022 · Social circle definition: a group of people who are socially connected | Meaning, pronunciation, translations and examples

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