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The measurement of temperature is extremely common. There are many temperature measuring devices in the average home. Some of these will use thermistors. Here are some of the advantages of thermistors for temperature measurement. Thermistors are a type of temperature sensor; their electrical resistance varies as a function of their temperature. They are often used in applications such as fire alarms, refrigerators, ovens and boilers. They measure temperature by assessing the resistance passing through them and converting it into a temperature reading. A German doctor in the 19th century set the standard at 98.6 F, but more recent studies say the baseline for most people is closer to 98.2 F. For a typical adult, body temperature can be anywhere from 97 F to 99 F. Babies and children have a little higher range: 97.9 F to 100.4 F. Your temperature doesn’t stay same all day, and it will vary throughout your lifetime, too. If your temperature is 103 F or higher or if you’ve had a fever for more than 3 days, call your doctor. Also call if you have a fever with symptoms like severe throat swelling, vomiting, headache, chest pain, stiff neck or rash. For children, fevers are a bit more complicated. Call your pediatrician in such a situation .

Every system and organ in the body needs oxygen to survive. Without oxygen, cells begin to malfunction and eventually die. Cell death can cause severe symptoms and ultimately lead to organ failure. The body transports oxygen to the organs by filtering it through the lungs. The lungs then distribute oxygen into the blood via hemoglobin proteins in red blood cells. These proteins provide oxygen to the rest of the body. Pulse oximetry measures the percentage of oxygen in hemoglobin proteins, called oxygen saturation. Oxygen saturation usually indicates how much oxygen is getting to the organs. Normal oxygen saturation levels are between 95 and 100 percent. Oxygen saturation levels below 90 percent are considered abnormally low and can be a clinical emergency.