0
What are the bias and error when a person is ill and uses a rectal thermometer to take an oral temperature?
Wiki User
∙ 13y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What are the errors to use a thermometer?
The fixed error on a non-digital thermometer is 0.5oC. The percentage error is worked out by dividing 50 by the reading you have taken from the thermometer.
What is the percent error of 42 degrees Fahrenheit?
This error depends on the type of your thermometer; each thermometer has a specific error in-scripted on the tube or label.
To get an accurate measurement on a thermometer what do you do?
- Read the temperature over the meniscus (for mercury thermometers)- Avoid the parallaxe error- Respect the depth of immersion thermometer- Don't use thermometers with defects (ex. air bubbles)- Wait a reasonable time the setting of indication for the thermometer
What is a wrongly calibrated instrument?
A wrongly calibrated instrument is one that shows the wrong measurement. For example, alcohol in a thermometer rises with temperature; but the exact marks for 0 degrees, 10 degrees, ... 100 degrees (for example) may be wrongly placed, so that, when the temperature really is 30 degrees, the thermometer only shows 28 degrees (for example). Any instrument will have some error of this type, but the idea of calibration is to keep this kind of error reasonably small.A wrongly calibrated instrument is one that shows the wrong measurement. For example, alcohol in a thermometer rises with temperature; but the exact marks for 0 degrees, 10 degrees, ... 100 degrees (for example) may be wrongly placed, so that, when the temperature really is 30 degrees, the thermometer only shows 28 degrees (for example). Any instrument will have some error of this type, but the idea of calibration is to keep this kind of error reasonably small.A wrongly calibrated instrument is one that shows the wrong measurement. For example, alcohol in a thermometer rises with temperature; but the exact marks for 0 degrees, 10 degrees, ... 100 degrees (for example) may be wrongly placed, so that, when the temperature really is 30 degrees, the thermometer only shows 28 degrees (for example). Any instrument will have some error of this type, but the idea of calibration is to keep this kind of error reasonably small.A wrongly calibrated instrument is one that shows the wrong measurement. For example, alcohol in a thermometer rises with temperature; but the exact marks for 0 degrees, 10 degrees, ... 100 degrees (for example) may be wrongly placed, so that, when the temperature really is 30 degrees, the thermometer only shows 28 degrees (for example). Any instrument will have some error of this type, but the idea of calibration is to keep this kind of error reasonably small.
Does the final temperature from the experiment equal to the final temperature from the calculation?
It should but it probably will not because of: experimental error measurement error calibration error (zero error)
What is the average temperature in cockpit of an f1 car during a race?
Tony Stewart had a digital thermometer in his car at charlotte. It eventually read error when the temp got past 140 F.
What is advantages and disadvantages of clinical thermometer?
Clinical thermometers, also known as medical thermometers, are used for measuring human body temperature. They have kinks at one end which prevent the fluid from flowing back before the readings have been taken. They offer accurate and easy-to-read recordings, in addition they are easy to clean, to carry around and to store.
What are some sources of error in colorimetry lab?
boiling chips are not added to the distillation flask. the thermometer bulb is placed in the boiling liquid. the water to the water-jacketed condenser is not turned on.
What does Uncertainty mean in science?
It is an indication of the accuracy of a measurement/result. It may also be called the Error. Measuring devices will all have an error associated with their measurements. For example, you may be using a thermometer with increments of 0.5°C. Thus you could be expected to read temperature with an accuracy of 0.1°C. A measurement would look like 32.7±0.1°C. However, measuring devices will usually indicate somewhere the error in the result they give. So if your thermometer isn't very accurate it may have an error of ±1°C. When doing calculations with error containing data, the error of the final answer can be calculated from the measurements and their errors. There is a general formula which allows calculation of error for any function: s = error in measurement x the derivatives are partial derivatives with respect to the corresponding variable x The above formula is for non-linear combinations.
What is a thermometric well?
Ans. Thermometric Well Fig. 3.6 shows an arrangement which is used to measure the temperature of gas flowing through a pipeline. A small tube called thermometric well is welded radially into the pipeline.The well is partially filled with some liquid and the thermometer is immersed into this liquid. When the temperature of the gas flowing through the pipeline is higher than the ambient temperature, the heat flows from the hot gases towards the tube walls along the well.This may cause temperature at the bottom of well to become colder than the gas flowing around. Obviously the temperature indicated by the thermometer will not be the true temperature of the gas. The error in the temperature measurement is estimated with the help of the theory of fins.The protective tube (well) can be considered as a hollow fin (internal diameter d,thickness ö and length 1), and the temperature distribution obtained by using the relation applicable to a fin with tip insulated:where is the temperature of the pipe wall, ta is the temperature of hot gas or air flowing through the pipeline, and is the temperature at any distance x measured from pipe wall along the thermometric well.If x = 1 then,where t1 is the temperature recorded by the thermometer at the bottom of well and represents error in temperature measurement.The perimeter of the protective well P = and its cross-sectional area Therefore,then,
Is it bad if your temperature is 97.1?
Not necessarily. But you may want to try a different thermometer or make sure you're taking the reading properly. If your body temperature is just slightly low, warm yourself up with blankets and hot liquid, and if it persists see a doctor ASAP. A very low temperature is also a symptom of hypothermia, which needs emergency medical attention.
What can be found by comparing temperatures of two different thermometer?
To compare the difference of two thermometers measuring the same environment (or substance) at the same time is (a) to compare the accuracy of the instruments and/or (b) to compare the method/type of thermometer.Examples: (a) you could have an instrument (thermometer) that is known to be accurate and another which you are testing the accuracy of. You could have two types of thermometers such as (b1) a Mercury in glass thermometer and bi-metal spring thermometer. Or perhaps you have the sense that one thermometer covers your effective range of temperatures better than the other (b2). Perhaps you are concerned with how long it takes for the second thermometer to equilibrate. Or perhaps the second thermometer is a digital thermometer which you are using to check and calibrate your volumetric alcohol thermometer (b3). Importantly, (c) making multiple measurements allows you to average the measurements and find if they vary much from one another (measured by standard deviation, or standard error--look up these technical terms or read on to be reminded in brief).(c) If you are making multiple measurements, you can calculate the mean of the measurements (the mean of two measurements is the sum of the two measurements divided by two) and the standard error (which, in the case of two measurements, would be the square root of the difference of the measurements). In the case of n measurements, the mean ("n_bar") would be the sum of the n measurements divided by n, and the standard error would be the square root of the sum of the squares of the differences between each measurement and n_bar, divided by n-1. The mean is simply the average, and the standard error is a measure of the spread of the measurement, or the accuracy of the group of measurements.It is very often the business in science to make many measurements and keep track of means and errors, so that the variance in results is understood, and indeed whether there should be a variance. For example, one may expect the temperature to vary with respect to time or unknown factors. Temperature is known to vary at a particular location as a function of time of day (colder at midnight than it is at noon). On the other hand, there should be no variance as the measurement is of a quantity which is assumed to be constant, like the freezing temperature of pure water at a given pressure. If your measurement varies from a known quantity, you can readily compute the absolute error. If your (multiple) measurements of temperature vary from each other, you can readily compute the relative error. Only then would you be able to scientifically report your results.
