Now is the very time, many Internet users are very important to their own body temperature, afraid of being hit. But the unusual mercury thermometer is more troublesome to use, and you have to wait several minutes to get the result. So some netizens on the whim, now the phone's function is so powerful, can not turn the phone into a thermometer, at any time to measure the body temperature, which is not very convenient?
But the fantasy is beautiful, the reality is cruel. Smartphones are incredibly powerful, but they can't measure the body's temperature without an external device. Some users will ask, some cell phone APP can also display the temperature inside the body, and even the CPU, motherboard, battery temperature can be listed, proving that there is a temperature sensor inside the phone. Why can't we use this function to measure body temperature? The answer is very simple, the temperature sensor inside the phone is placed inside the body, even if the phone is in direct contact with the human body, the body temperature will be blocked by the body shell, so the temperature measured will be very inaccurate. Secondly, during the operation of the phone, the processor, screen, battery will generate heat, so the temperature measured by the temperature sensor inside the phone is first of all the temperature of these parts, and then measure the temperature of the human body in this case, then the results are certainly inaccurate.
There are also users who will ask, now a lot of non-contact temperature gun use is the infrared function to measure the body temperature, and many smartphones are infrared sensors, is it possible to use this function to measure the body temperature? The answer is still no, because the infrared sensor of the ordinary temperature gun is used to measure the amount of infrared radiation on the surface of the human body, and use it to determine the body temperature. While the infrared emitter of a smartphone is to emit infrared light outward to control household appliances, the principles of the two are completely different. So even if there is an infrared function of the phone, can not be used as an infrared temperature gun.
Finally, it should be emphasized that although smartphones can be used as thermometers after adding some accessories, it's best to use the simplest mercury thermometer to measure body temperature accurately, because the simpler the device, the more accurate it is. Body temperature is an important basis for determining whether a person is sick, the measurement of body temperature must also be scientific and rigorous. What's more, the price of a medical mercury thermometer is just a few dollars, both in terms of practicality and accuracy are more appropriate.