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If the Greenwich Hour Angle (GHA) of the sun is 173deg the Local Hour Angle (LHA) is 358deg ... What is the longitude?
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How do you calculate Greenwich hour angle?
The calculation is an hour for every 15 degrees you are away from the Greenwich meridian . You need to know your longitude , then do the calculation . Remember to do plus or minus depending if you are East or West....... eg. if you are in mid Atlantic somewhere , say 45 degrees West .....its minus three hours..
How are lines of longitude and latitude divided into minutes and seconds?
Every degree of angle divides into 60 minutes of angle and every minute of angle divides into 60 seconds of angle. This system of measuring angles has been used since the Babylonians established it roughly 3000 years ago..
What is one degrees equal to?
It depends on the context which is not specified by the question. Amongst it many uses, a degree can refer to:several different measures of temperature,a measure of angle (in general),a measure of angle of the surface of the earth (d latitude or longitude),a measure of intensity or magnitude (eg third degree burns, murder),a post school qualification.
What are the types of geometric angles?
Right angle, obtuse angle, acute angle, supplementary angle, complementary angle, interior angle, exterior angle, adjacent angle
The angle of reflection is equal to the .......?
The angle of incidence
Is it true that the main line of longitude is called the greenwich meridian?
You might say that. The thing that makes it the "main" one is the fact that by international agreement, it's the meridian that's accepted as zero longitude. So whenever the longitude of a place is stated, you always know that the number means an angle measured from the "Greenwich Meridian".
Longitude measures the distance east and west of the what?
Longitude measures the distance east and west of the Prime Meridian, which is the imaginary line that runs from the North Pole to the South Pole through Greenwich, England.
How do you calculate Greenwich hour angle?
The calculation is an hour for every 15 degrees you are away from the Greenwich meridian . You need to know your longitude , then do the calculation . Remember to do plus or minus depending if you are East or West....... eg. if you are in mid Atlantic somewhere , say 45 degrees West .....its minus three hours..
Where is the starting point of measuring longitude?
The starting point for measuring longitude is the Prime Meridian, which is located in Greenwich, London. Longitude is measured in degrees east or west of the Prime Meridian, with the full circle of longitude being 360 degrees.
Which was more difficult to determine latitude or longitude and why?
Longitude was historically more difficult to determine than latitude because longitude is determined by measuring time differences between a reference point (such as Greenwich, England) and the observer's location, which required accurate timekeeping devices. Latitude, on the other hand, can be determined by measuring the angle of the North Star or the sun relative to the horizon.
When finding longitude what is your first step?
Longitude refers to the invisible lines across the globe that mark off specific locations. In order to find a line of longitude, it is important to get a map or globe. Look for long lines that are spaced evenly across the globe.
How do latitudes and longitudes be identified?
They are measured relative to 2 "great circles" around the earth, each identified as 0 degrees. The first is the equator, which is equidistant from the north and south poles. The second is a circle that goes through Greenwich, England and the 2 poles (also known as the prime meridian). Greenwich was chosen because it was the location of the Royal Observatory of the British Empire. The British Navy, as a great power of the world, desired to have the best navigation system possible - their astronomers were helping to devise a solution to this problem, hence defined the longitude system relative to their most desirable location). If a line is drawn from the center of the earth to a point on the earth's surface, the angle that line makes with the plane defined by the 0 degree latitude (the equator), is the latitude. And the angle of that line with the plane defined by the 0 degree longitude (the one through Greenwich), is the longitude. Also latitudes must define whether the angle goes north or south of the equator, and longitudes must define whether the angle goes east or west of the prime meridian.
How is the lines of latitude and longitude different?
The 'latitude' of a location is its angle north or south of the equator. The 'longitude' of a location is its angle east or west of the Prime Meridian.
What is longitude messured in?
Longitude is an angle. So is latitude. Both can be measured in any angle unit, but the 'degree' and its subdivisions have always been the most popular.
What is the astronomy definition for longitude?
In astronomy, longitude refers to the angular distance of a celestial object measured eastward along the celestial equator from the observer's meridian to the object's meridian. It helps locate objects in the sky based on their east-west positions.
Which direction on the map does longitude run?
The 'longitude' of a place is its angle east or west of the Prime Meridian .
What is the prime merdirian?
The Prime Meridian is an imaginary line between the north and south poles and passing through the Royal Observatory in Greenwich UK. It's accepted worldwide as the 'zero' reference line for measurement of longitude. When the longitude of any place on Earth is stated, the number always means the angle east or west from the Prime Meridian to that place.
