Why is a Spherometer called so?
A spherometer basically is a precision instrument to measure very small lengths. Its name reflects the way it is used to measure the radii of curvature of spherical surfaces.
Where is Spherometer used?
The Spherometer is a device use in measuring the radius of curvature of a spherical surface. For an example, it can be used to measure the thickness of a microscope slide or the depth of depression in a slide. Even the curvature of a ball can be measured using a Spherometer.
How least count is determined?
Mathematically a measurement instrument Least Count is calculated by dividing main scale reading with the total number of divisions on main scale. And if instrument also have a Secondary scale. Then instrument LC is the ratio of main scale L.C. and number of divisions on the secondary scale.
How do you find the error in a Spherometer?
zero error in spherometer First, it’s 3 legs (A, B, C) is placed on a plane glass as shown in the fig. Then Screw head is rotated clockwise until the middle screw contacts the plane glass. After that, we can read the zero error. There are three ways to find the position that A, B, C, D points are on the same plane.
Is there any error in Spherometer?
hello, why is it said that a spherometer has no zero error or its zero error is not considered? Answer: Zero error does not occur in spherometer because result is obtained by taking the difference of final and initial reading.
What is the difference between Spherometer and screw gauge?
Spherometer can measure the dimensions of spherical surface but screw gauge can’t do..but there’s no difference in the working and principle but only the difference is what kind of surface it can measure!!
Why zero error is positive or negative?
Positive zero error refers to the case when the jaws of the vernier caliper are just closed and the reading is a positive reading away from the actual reading of 0.00 mm. If the reading is 0.10 mm, the zero error is referred to as +0.10 mm. If the reading is 0.08 mm, the zero error is referred to as -0.08 mm.
How do you fix a positive error?
This post will outline some positive error correction techniques that you can use to correct pronunciation, grammar, and comprehension mistakes, using both delayed and immediate methods. These methods include group practice, peer-to-peer learning, individualized correction, and modeling.
What are the source of error in this experiment?
Common sources of error include instrumental, environmental, procedural, and human. All of these errors can be either random or systematic depending on how they affect the results. Instrumental error happens when the instruments being used are inaccurate, such as a balance that does not work (SF Fig.