0
What apparent shift is in the position of an object when viewed from two places?
Wiki User
∙ 10y ago
In the days before laser rangefinding, gunners used double telescopes whose objective lenses could be yards apart to very accurately judge objects more than a mile away.
Too see distant stars' distance, we take advantage of the Earth's orbit, and take one set of pictures in the spring and another in the fall (or just six months apart). By comparison with the deep space objects and how much the stars "move" we can estimate their distance.
There's even a special term for the huge distances involved: "parsec". At a distance of one PARSEC, a star (or other object) has a PARallax of one SECond of arc (1/3600th of a degree). The "second" here is not the second of time, 1/60th of a 1/60th of an hour, but the 1/60th of a 1/60th of a degree.
A parsec is as far as a beam of light could travel in 3.26 years, or just a bit more than 100,000,000 light seconds, each one equal to 300,000,000 meters.
Wiki User
∙ 10y ago
Wiki User
∙ 8y agoParallax
+++
More accurately, parallax is the apparent change of position relatively to the background or other objects.
Wiki User
∙ 11y agoThe apparent change in the position of an object when you look at it from different places is called parallax.
Wiki User
∙ 14y agoDoppler Shift
Wiki User
∙ 14y agoparallax
Wiki User
∙ 9y agoMotion
Add your answer:
Earn +20 pts
What is a parallex?
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.
What is apparent magnatude?
It means "apparent" - visible to the naked eye. It is the magnitude of an object as viewed from Earth. The Sun has an apparent magnitude of -26.73 because it is very close to us. However, Sirius, which is actually more luminous, has an apparent magnitude of -1.46 because it is further away from Earth. For this reason we also use absolute magnitude, which is the luminosity of an object at the same distance. Using absolute scales. The Sun has a value of 4.85 and Sirius has a value of 1.42. (NB: The lower the value, the more luminous an object is)
What is apparent depth?
If a person looks at a straight object, such as a pencil or straw, which is placed at a slant, partially in the water, the object appears to bend at the water's surface. This is due to the bending of light rays as they move from the water to the air. Once the rays reach the eye, the eye traces them back as straight lines (lines of sight). The lines of sight (shown as dashed lines) intersect at a higher position than where the actual rays originated. This causes the pencil to appear higher and the water to appear shallower than it really is. The depth that the water appears to be when viewed from above is known as the apparent depth.
What star is located 147 degrees south east?
Surely you must realize that the sky takes on different appearances when viewed from different places on earth, and that the entire sky and every astronomical object in it rotates completely around an observer each day. We can probably identify an object that you saw one evening, but in addition to its position in the sky, you must also tell us what time you saw it there, and where you were located.
What object looks as if the position has shifted when it is viewed from different locations this is referred to as?
It is called parallax and is often used for calculating the distance to stars and other distant objects which can't be measured directly.
What is it called when the apperent shift in the position of an object when viewed from two locations?
Parallax is the apparent difference in the position of a nearer object, compared to more distant background objects, when viewed from two different positions.
What is the name of the principle employed by early astronomers to determine the distances to celestial objects using the displacement of the apparent position of an object viewed along two different?
parallax
What is a parallax.?
The definition for the word parallax is "the effect whereby the position or direction of an object appears to differ when viewed from different positions, e.g., through the viewfinder and the lens of a camera."
How much more light does the sun give off than an object with thte least apparent magnitude that can be viewed by the naked eye?
How much more light does the sun give off than an object with the least apparent magnitude that can be viewed by the naked eye
What is a parallex?
Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines.
Why does a pencil appear bent in a cup of water?
This is due to apparent shift in the position of pencil when viewed from a rarer to denser medium. This is also on account of refraction of light.
What is the name of the brightness of a star viewed from earth?
Apparent magnitude.
What is the star with the brightest apparent magnitude as viewed from Earth?
Sirius.
What is apparent magnatude?
It means "apparent" - visible to the naked eye. It is the magnitude of an object as viewed from Earth. The Sun has an apparent magnitude of -26.73 because it is very close to us. However, Sirius, which is actually more luminous, has an apparent magnitude of -1.46 because it is further away from Earth. For this reason we also use absolute magnitude, which is the luminosity of an object at the same distance. Using absolute scales. The Sun has a value of 4.85 and Sirius has a value of 1.42. (NB: The lower the value, the more luminous an object is)
Why should you never allow an objective lens to touch the slide?
because you can get it dirty, or you could move the object being viewed to a bad position.
What are parallaxes?
The different apparent direction (position) of an object when viewed from two different sight lines. Easiest example ... hold up one finger at arms length view with one eye and then the other the change (against the background) is the parallax.
What is a stars level of brightness as viewed by the unaided eye called?
Apparent magnitude.
