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How parallax introduces errors in reading analog meters?
You get parallax errors with analogue meters if you don't align your eye so that it is perpendicular to the pointer. When this happens the pointer can appear to line up with the wrong mark on the scale. The further your point of view is away from the perpendicular, the greater the error. The potential for errors can be reduced by minimizing the gap between the pointer and the scale or better still fitting a mirror behind the pointer so that it is in the same plane as the scale. The mirror assists the viewer find the correct point of view, since in this condition (correct point of view) the reflection of the pointer will be hidden behind the pointer.
What mirror is makeup mirror concave convex or plane mirror?
concave
What are three sentences for the word mirror?
Seven years bad luck if you break a mirror.There was a mirror image reflected on the lake.Jenny always carried a little make up mirror in her handbag.
What is fork mounting of mirror in microscope?
fork mounting of mirror help to hold the mirror.
What is the technical name for a fish eye mirror?
A fish eye mirror is a convex mirror
Mirror Mirror on the wall who is the gingerest of them all?
There is no scale for the worldwide measurement of hair gingerness.
What is the function of the mirror located under the scale?
The function of the mirror located under the scale is to ensure that it does not touch the ground. This will result in inaccurate results and should be avoided at all costs.
The image in a plane mirror an be upright or inverted depending on where the object is?
A plane mirror will always create an upright image of 1/2 scale.
I don't speak and I cannot hear but I always tell the truth. What am I?
A scale
How galvanometer work?
Electricity passing through a wire coil creates a magnetic field which twists a suspended magnet and mirror. A light beam reflects off the mirror and onto a scale.
How a galvanometer works?
Electricity passing through a wire coil creates a magnetic field which twists a suspended magnet and mirror. A light beam reflects off the mirror and onto a scale.
How parallax can be avoided?
To help the user avoid this problem, the scale is sometimes printed above a narrow strip of mirror, and the user positions his eye so that the pointer obscures its own reflection. This guarantees that the user's line of sight is perpendicular to the mirror and therefore to the scale. Parallax is thus avoided.
How can parallax error be avoided?
To help the user avoid this problem, the scale is sometimes printed above a narrow strip of mirror, and the user positions his eye so that the pointer obscures its own reflection. This guarantees that the user's line of sight is perpendicular to the mirror and therefore to the scale. Parallax is thus avoided.
How long is the image of a meter-stick formed by a plane mirror?
It can't be more than one meter. The length of the image depends on the position of the scale held in front of the mirror. The length of the image depends on the angle between the plane mirror and the meter stick.
What does a galvonometer measure?
galvanometer is a device use to measure current.
What are the parts of refractometer?
Eyepiece, Telescope, Compensator Drum / Control Knob, Heating Chamber / Clamp, Mirror, Scale magnifier, Scale, Movable lever arm, tangent fine adjustment screw, Base, and Hand Positioning Control Clamp.
What is the function or the mirror located under the ammeter scale?
As you read the meter, you're supposed to line up the needle with its image in the mirror. When you do that, you know you're looking at it exactly perpendicular to the numbers, not on a slant. That eliminates the possibility of introducing an error into your reading because of "parallax".
