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What is accuracy in measurement and instrumentation?
Accuracy in measurement and instrumentation refers to how close a measured value is to the true or known value. It is a measure of systematic error, which denotes how well the instrument or measurement device is calibrated and free from biases. The accuracy is usually expressed as a percentage of the measuring range or as a specified number of units.
Why do you call a measuring stick a ruler?
They are in fact two different devices that are commonly mistaken. A "measuring stick" is a stick of a given length that is used to reference another object from it's total length. These usually have no markings as such, or any calibrated length. A "ruler" (aka straightedge) IS calibrated and has measurement markings. It is used to "rule" straight lines to an exacting measurement. Originally designed for the engineering industry, they have been useful in countless other areas throught history. A 2 second google search revealed this: http://en.wikipedia.org/wiki/Ruler
How do you find the precision of measurements?
To check the precision of an instrument its apparent measurement must be compared to a known measurement. The difference between the measured quantity divided by the known quantity is expressed as a % precision of the instrument, or calibration. Most instruments when being calibrated are tested against multiple known quantities throughout the range of the instrument. Thus the precision of the instrument is determined throughout it's full range of measurement.
What is calibrated in units?
Just about everthing
How do you use caliberated in a sentence?
Do you mean calibrated? The motorist calibrated the amount of fuel he would use if he travelled 130km at 90km per hour.
What is the Difference between graduated and calibrated apparatus?
Graduated means a tool has lines or markings where measurements can be determined and calibrated is where the tool needs to be adjusted before the measurement can be read. cgb
Is the pH a quantitive observation?
When the pH is measured with a calibrated instrument it is a quantitative measurement.
What is meant by the phrase measurement is a process of comparison?
Measurement is a process of comparison between a certified standard or a calibrated measuring instrument and the object or the material to be measured (analyzed). For example, to measure a weight you compare the weight of an object with the calibrated weights of a balance.
What units of measurement do beakers use?
The volume is measured in L or submultiples.
Can a measurement be precise without being accurate?
Yes, a measurement can be precise without being accurate. Precision refers to how close repeated measurements are to each other, while accuracy refers to how close a measurement is to the true value. It is possible for measurements to be consistently close to each other (precise) but consistently off from the true value (inaccurate).
What unit of measurement does a ruler use?
Most rulers are calibrated on one side in inches and on the other in centimetres.
What is a droppper pipet?
A narrow, usually calibrated glass tube into which small amounts of liquid are suctioned for transfer or measurement.
How would you GeT a precise measurement of line a to nearest milllimere?
By using a precise instrument. One that is calibrated by a recognised body.
Does a beaker measure liquids?
Calibrated beakers have markings on their sides used for measurement. The accuracy of the reading depends upon the observer.
How do you measure mass of truck using metric system?
You drive it on to a metrically calibrated weighbridge or convert its mass from Imperial measurement.
When were the first calibrated thermometers made and where?
The first calibrated thermometers were made in the early 1700s by Italian inventor Santorio Santorio, who used a sealed glass tube with a numerical scale to measure temperature. This marked the beginning of the modern temperature measurement era.
When was the first accuratley calibrated thermometers made and where?
The first accurately calibrated thermometers were made in the early 18th century by Gabriel Fahrenheit in the Netherlands. Fahrenheit's mercury-in-glass thermometer established a standardized temperature scale, enabling precise measurement of temperature variations.
