There is about a dozen ways to measure
Body. This is usually done with mercury thermometers. But now on sale you can find naked stripes, infrared, galaline, electronic thermometers. Consider the 4 most common types of thermometers, we estimate their advantages and
.
Mercury thermometer
Benefits:
The temperature is measured by the usual majority of people in the way. Such a thermometer is a glass flask with a capillary that contains mercury. Sometimes this thermometer is called maximum, since mercury can rise to the last point of heating and does not fall without shaking.
Disadvantages:
The mercury thermometer is considered the most dangerous due to mercury, despite the fact that it shows the most accurate result. But if he breaks, mercury can cause serious problems. Mercury pairs have a negative impact on human health.
Read also: What should parents do if a child has a high temperature?
GalinistanTeerMometer
Benefits:
It looks like it looks like a mercury thermometer, but in fact there is no mercury inside. Instead of it - a mixture of such liquid metals as India, Tin and Gallium (Galinstan). It is absolutely harmless to humans. The partition of such a thermometer will not harm human health.
Disadvantages:
There is a serious disadvantage of such a thermometer - it is very difficult to bring down the indicator for re-measuring the body temperature. Metal mixture moves along a glass tube with great difficulty in contrast to mercury. Also in order for such a thermometer to show an accurate result, you need a dense adjacent to the body. If this condition does not observe, the temperature may be incorrect.
Digital Thermometer
Benefits
Modern appearance. Such a thermometer is a plastic tube with a display, wiring translucent through the housing. Displays the result is clear, temperature measurement usually takes from 3 to 5 minutes. When the temperature measurement is completed, a beep sounds. The last value of the measured temperature in the device is preserved.
disadvantages
The electronic thermometer has two main disadvantages. High cost and probability of obtaining an inaccurate result with a loose fit to the body. Little children are difficult to stop in place, so it is often such a thermometer issues an incorrect result.
Infrared thermometer
Benefits
The infrared thermometer is suitable for measuring the body temperature and to measure the ambient temperature. Such a thermometer is quite convenient to measure the temperature in the child, since it does not have to disturb it, and this once again confirms simplicity and convenience. Measurement takes just a couple of seconds, and the result immediately appears on the display. Data on the latest temperature measurements are saved.
disadvantages
The main disadvantage of such a thermometer is the high cost. The error in measuring such a device is quite high. For a more accurate result, it is necessary to conduct a number of measurements. It is important to use this device on some parts of the body, such as forehead, whiskey and ear sinks.
Which of the devices presented can show the most accurate result?
In order to find out whether more modern mercury thermometers have surpassed, an experiment was carried out. In the laboratory, water container was installed, a special heater and a device that was responsible for the uniform distribution of the liquid and maintain the specified temperature. It was 36.2 ° C.
For the experiment, several Galin Ialine, electronic and mercury thermometers were purchased. According to the results of the experience, it can be said that mercury and Galin-standard thermometers turned out to be the most accurate. Also, the readings of electronic thermometers turned out to be completely accurate and were close to the real value of the fluid temperature. Infrared thermometers did not fully cope with the task.
In favor of which thermometers worth making a choice?
The mercury thermometer is considered the most accurate and universal of all the above thermometers. But it is impossible to miss attention that when it is used, great caution is important. It must be stored in the case in the place where children will definitely not get.
If suddenly there was a situation in which the mercury thermometer was broken, it is better to seek help from specialists and see whether the mercury balls are unnoticed. It is important not to forget that mercury does not smell, and its pairs can not be noticed. A broken thermometer can cause poisoning of all residents of the apartment.