The concentricity error of an optical fiber is the distance between the center of the two concentric circles that specify the cladding diameter and the center of the two concentric circles that specify the core diameter.

The advantage of using a combination reamer is to reduce the number of turret operations, while more precisely holding depths, internal diameters and concentricity.

( The axial movement of cones is not mandatory, however ; a split bushing squeezed radially with a linear force — e. g., set screw, solenoid, spring clamp, pneumatic or hydraulic cylinder — achieves the same principle without the cones ; but concentricity can only be had to the extent that the bushing's diameters are perfect for the particular object being held.

It is simple and useful, but the degree of control of concentricity is not quite good enough to be foolproof for high-speed, high-precision work ( high precision can be achieved, but the time and skill involved in the setups makes it a poor choice now that better options exist, such as the cam-lock spindle noses described below ).

The exact-adjust ( Set-Tru ) concept is one way to chase high concentricity on threaded spindle noses with some relative degree of ease.

The preservation of concentricity between the turning and grinding operations is crucial for quality work.

The scriber block may also be used in place of a dial indicator to detect run out ( a variation in concentricity ) of a workpiece mounted in a four-jaw chuck.

There are hybrid self-centering chucks that have adjustment screws that can be used to further improve the concentricity after the workpiece has been gripped by the scroll jaws.

This ability may also include the additional ability to infer the correct relationships between selected geometry ( e. g., tangency, concentricity ) which makes the editing process less time and labor intensive while still freeing the engineer from the burden of understanding the models.

Tolerances of concentricity of the hob limit the lower modules which can be cut practically by hobbing to about 0. 5 module.

The efficiency of the Kylchap system relied on careful proportioning of its components, and perfect alignment and concentricity.

This system improves the repeatability of the mounting concentricity down to a very small total indicated runout ( TIR ) value.

In either case, the tip of the counterbore has a reduced diameter section referred to as the pilot, a feature essential to assuring concentricity between the counterbore and the hole being counterbored.

There is no room for error or waste.

To my knowledge, Lincoln remains the only Head of State and Commander-in-Chief who, while fighting a fearful war whose issue was in doubt, proved man enough to say this publicly -- to give his foe the benefit of the fact that in all human truth there is some error, and in all our error, some truth.

So great a man could not but understand, too, that the thing that moves men to sacrifice their lives is not the error of their thought, which their opponents see and attack, but the truth which the latter do not see -- any more than they see the error which mars the truth they themselves defend.

Their great error is to mingle the responses typical of each of the three types of change.

Without a precise knowledge of Germanic philology, however, it is debatable whether their use was not more often a source of confusion and error than anything else.

The observational data determining the concentration distribution have a range of error which is magnified in the extension into the micrometeorite region.

Another problem in the area of federal-state relationships is this: what constitutes reversible error in a state decision??

If the polarity is correct, the platform will turn until the heading error angle is zero.

If the drift error is systematic, it can be canceled with a bias circuit which can be arranged and adjusted to supply the required compensating current.

The point is at a latitude **yl, and the platform is at an error in heading east.

Such talk is seriously in error.

He has a pleasant sense of humor and is modest enough to admit mistakes and even `` a cardinal error ''.

He contends this idea doesn't conflict with experiments on which the principle of conservation of matter and energy is based because some slight error must be assumed in such experiments.

It allows compact encoding, but is less reliable for data transmission ; an error in transmitting the shift code typically makes a long part of the transmission unreadable.

( It follows that the mean is also the best single predictor in the sense of having the lowest root mean squared error.

The Type II error rate is a function of several things including

the result of the effect and is partially random error.

Random error is typically assumed to be normally distributed with zero mean and a constant variance.

Random error is also called experimental error.

The number of degrees of freedom DF can be partitioned in a similar way: one of these components ( that for error ) specifies a chi-squared distribution which describes the associated sum of squares, while the same is true for " treatments " if there is no treatment effect.

Special bit patterns are sometimes used for a sign or for other indications ( e. g., error or overflow ).

Retcons are also sometimes used to either correct or cover up a perceived error.

The latter two methods are used less frequently than keyboard-based input methods and suffer from relatively high error rates, especially when used without proper " training ", though higher error rates are an acceptable trade-off to many users.

The instruments used to study weather over the modern time scale, their known error, their immediate environment, and their exposure have changed over the years, which must be considered when studying the climate of centuries past.

It introduced the Gaussian gravitational constant, and contained an influential treatment of the method of least squares, a procedure used in all sciences to this day to minimize the impact of measurement error.

Accordingly, when a disk was formatted or a disk error occurred, the unit would try to physically move the head 40 times in the direction of track zero ( although the 1541 DOS only used 35 tracks, the drive itself was a 40 track unit, so this ensured track zero would be reached no matter where the head was before ).

However, phthalocyanine is more sensitive than cyanine to writing laser power calibration, meaning that the power level used by the writing laser has to be more accurately adjusted for the disc in order to get a good recording ; this may erode the benefits of dye stability, as marginally written discs ( with higher correctable error rates ) will lose data ( i. e. have uncorrectable errors ) after less dye degradation than well written discs ( with lower correctable error rates ).

Note that this is before the effects of round-off error are taken into account ; conditioning is a property of the matrix, not the algorithm or floating point accuracy of the computer used to solve the corresponding system.

The Cyclic redundancy check ( CRC ) method is typically used in storage for error detection.

The Cyclic redundancy check ( CRC ) method is typically used in storage for error detection.

Instead, these parsers just provide to the application the parsed FPI and / or URI associated to the notations found in the parsed SGML or XML document, and with a facility for a dictionary containing all notation names declared in the DTD ; these validating parsers will also check the uniqueness of notation name declarations, and will report a validation error if some notation names are used anywhere in the DTD or in the document body but not declared:

The Euler – Maclaurin formula is also used for detailed error analysis in numerical quadrature.

Such a formula for estimating energy typically has relative error of order of 10 %, but can be used to get a rough qualitative idea and understanding of a molecule.

R is used to replace all occurrences of a piece of text in a given range of lines, for example, to replace a spelling error.

The word Tsar derives from Latin Caesar, but this title was used in Russia as equivalent to King ; the error occurred when medieval Russian clerics referred to the biblical Jewish kings with the same title that was used to designate Roman and Byzantine rulers-Caesar.

As a quick approximation of the error function, the first 2 terms of the Taylor series can be used:

It has later been used as an error message elsewhere, such as Varnish ( software ), a reverse proxy and HTTP accelerator.

It is meant to be an extraordinary, rarely used power to ensure that those who should be brought to trial are in a timely manner or where an error of judgment is seen to have been made in the preliminary inquiry.

Channel coding is concerned with finding such nearly optimal codes that can be used to transmit data over a noisy channel with a small coding error at a rate near the channel capacity.

It is chiefly used by the operating systems of networked computers to send error messages indicating, for example, that a requested service is not available or that a host or router could not be reached.