How Do Baby Ear Thermometers Work??
Conventional thermometers work on the basis that matter expands when it heats up. When the liquid (normally mercury) inside the thermometer warms up, it expands and is forced up the tiny tube that runs up the middle of the thermometer. This is great in principal. However, it takes time to get an accurate reading because you have to wait for the base of the thermometer to warm up and for the warmth to be transferred to liquid within.
Baby ear thermometers work on a different principal entirely. Warm objects emit invisible energy in the form of infra-red radiation. Although it's not possible to see this with your eye it can be detected by sensitive electrical sensors. And by measuring the amount of energy that's emitted, it's possible to determine very accurately and quickly how hot an object is. Baby ear thermometers detect and quantify infra-red radiation. You don't need to wait for the thermometer itself to warm up before an accurate reading can be taken.
But why the ear? Using the ear canal to measure body temperature has some clear benefits. The eardrum itself shares it's blood supply with the area of the brain that controls body temperature. The temperature as monitored in the ear therefore gives the most up to date indicator of body temperature. They have advantages over oral thermometers in that temperature readings are not affected by hot or cold food or drinks. The advantages over rectal thermometers are obvious!
A baby ear thermometer really is a great investment for your baby, infant or child (or even adults). If you want to buy the best on the market from one of the net's most respected retailers then just click here!
