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What else can I help you with?
How position depends on the choice of a reference point and reference direction?
The answer is so simple and obvious that it's almost impossible to explain. Th e only way I can think of to explain it is with an example. If I phone you or text you, and I ask you where you are, and you reply "I'm 3 miles.", you haven't given me any information at all ... I would have no idea where to go in order to meet up with you. You would have many many different ways to reply, but that wouldn't be one of them. Here are a few ways you might answer me: -- I'm 3 miles north of Jim's house. -- I'm 1 mile west of school. -- I'm across the street from the grocery store. -- I'm on top of Suzie's house. In fact, ALL of these descriptions might be the same place. Any time you describe a place, there's always a reference point and a reference direction from it. "Jim's house", "school", "the grocery store", and "suzie's house" are all reference points. "North", "west", "across the street", and "on top" are all reference directions from the reference point.
What is position and how can it be measured and expressed mathematically?
Position describes the location of an object relative to a reference point. It can be measured using coordinates (such as x, y, z) in a Cartesian coordinate system or using angles and distance in a polar coordinate system. Mathematically, position can be expressed as a vector with magnitude and direction.
Why does a description of position depend on a reference point?
Description of position depends on a reference point because there is no other way to do it. A reference point is observable, so based on that observation, you can then describe where something else is. All locations are described that way, although there are many different kinds of reference points that are used. For example, a street address, 233 Main St., uses a street as a reference point. Mathematically, a Cartesian coordinate system is the most commonly used way to establish reference points. The use of lines of latitude and longitude allow is to locate anything on the surface of the Earth. If we wishes to locate another planet than the Earth, in our solar system, we would start by describing the distance of that planet from the sun.
How do you know something is in motion at an given time?
You have to use a reference point. Pick anything around the area (it's better if it's stationary), and then check to see if the other object changes position at all (in comparison to the reference point). If it does change position, then the object is in motion.
What is point of reference?
When you want to compare something or measure something, in order to make the comparison you have to know and agree where you are starting from. The point at which you are starting is your "reference point"
What is directional reference question?
Directional questions do not require the use of any additional resources. A general, geographic knowledge of where things are and how things are done is generally all that is needed. These questions can also be answered with good signage or notices. Examples of directional questions are: "Where is the catalog?" "Where do I check out books?" "How late are you open on Friday?" "Do you have today's newspaper?" .
Is a coordinate covalent bond directional in nature?
Covalent bonds of all types are directional in nature.
What is reference direction?
Directional questions do not require the use of any additional resources. A general, geographic knowledge of where things are and how things are done is generally all that is needed. These questions can also be answered with good signage or notices. Examples of directional questions are: "Where is the catalog?" "Where do I check out books?" "How late are you open on Friday?" "Do you have today's newspaper?" .
Are there any difficulties in fixing a position in space?
Yes - all possible reference points are moving in relation to one another.
What is the difference between omni directional and directional antennas?
An omni directional antenne receives or transmits signals from all directions as in 360 degrees. A directional antenne is aimed in a specific direction so that it may direct an outgoing signal to or receive a signal from a specific source.
What does the directional term lateral mean?
All medical directional terms work by assuming the person is in the anatomical position, that is stood up with their arms by their sides, palms facing forward. Lateral describes something that is further away from the midline than something else. The midline is the line that you could draw straight down the middle of a person, i.e. between their eyes, down through their nose and to the floor. For example, the ears are lateral to the eyes, and the eyes are lateral to the nose. The opposite is medial, i.e. towards the midline.
How position depends on the choice of a reference point and reference direction?
The answer is so simple and obvious that it's almost impossible to explain. Th e only way I can think of to explain it is with an example. If I phone you or text you, and I ask you where you are, and you reply "I'm 3 miles.", you haven't given me any information at all ... I would have no idea where to go in order to meet up with you. You would have many many different ways to reply, but that wouldn't be one of them. Here are a few ways you might answer me: -- I'm 3 miles north of Jim's house. -- I'm 1 mile west of school. -- I'm across the street from the grocery store. -- I'm on top of Suzie's house. In fact, ALL of these descriptions might be the same place. Any time you describe a place, there's always a reference point and a reference direction from it. "Jim's house", "school", "the grocery store", and "suzie's house" are all reference points. "North", "west", "across the street", and "on top" are all reference directions from the reference point.
Hydraulic directional valves what is the difference bet open center and closed center?
A close center directional valve holds the position of the cylinder. This is because in its center position its 4 ports (4/3 way) are blocked. An open center valve on the other hand does not hold position in the center position. This valve is commonly used for motors because it handles system overloads or "shocks" to the system. All 4 ports are connected in the form of an H. This valve is sometimes called an H-mid position valve. I hope this answered your question. I'm a 1st year mech eng student so I might not have covered the details you were looking for.
What is position and how can it be measured and expressed mathematically?
Position describes the location of an object relative to a reference point. It can be measured using coordinates (such as x, y, z) in a Cartesian coordinate system or using angles and distance in a polar coordinate system. Mathematically, position can be expressed as a vector with magnitude and direction.
How is an exact position in space identified?
There are several methods.You need a reference point (the origin. For an n-dimensional space you will need a set of n axes and n measures which define the position with regard to origin. The axes need not be orthogonal (at right angles) as can be seen from isometric graph paper. The measures need not all be distances, they can comprise one distance and the remainder being angles.Alternatively, you can have many reference points and directions from these reference points to the position. This is the system used by early cartographers for making maps before satellite mapping became possible. The reference points were called triangulation points, and as they moved across the region being mapped, they identified new triangulation points (whose positions they had worked out) so that they had these reference points reasonably near the position to be identified.Yet another method was to have a set of reference points and distances from these reference points to the position. This is the system used for GPS where the reference points are 3 or more satellites and the measures are distances to the position. Actually, the measures are of time but given the speed of light in the Earth's atmosphere, converting time to distance is trivial. A lot of trigonometry follows.
Why does a description of position depend on a reference point?
Description of position depends on a reference point because there is no other way to do it. A reference point is observable, so based on that observation, you can then describe where something else is. All locations are described that way, although there are many different kinds of reference points that are used. For example, a street address, 233 Main St., uses a street as a reference point. Mathematically, a Cartesian coordinate system is the most commonly used way to establish reference points. The use of lines of latitude and longitude allow is to locate anything on the surface of the Earth. If we wishes to locate another planet than the Earth, in our solar system, we would start by describing the distance of that planet from the sun.
How do universal terms and anatomical position help identify all humans?
All human bodies are alike and structured the same way, so when using universal terms it can refer to the same area of the body on every human being.
