The Introduction Of Thermometer And Its History

Thermometer is a maximum thermometer, it can record this thermometer the highest temperature has measured. The thermometer should be the "back table" after use, which took the top thermometer firmly swing it down hardly, so that to make the mercury that promoted to mercury tube back in the vacuole. Other thermometers must not be swinging, which is a major difference between the thermometer and other liquid. thermometer.
The principle of work
Thermometer, also known as "medical thermometer." Work material of thermometer is mercury. Its volume of vacuole is bigger than the volume of thin tubes above. The mercury in bubble, due to temperature effects, resulting in small changes in volume. The expansion of mercury, result in significantly changing the length of mercury inside the tube. Body temperature is generally between 35 ℃ to 42 ℃, so the thermometer scale is usually 35 ℃ to 42 ℃, and the range of each degree is divided into 10 parts, so the thermometer is accurate to 1 / 10 degrees. The tube neck in the lower part of thermometer near the vacuole is a narrow curved neck, when test temperature, the mercury in vacuoles is heated then result of volume expansion , part of mercury in the neck rise to a certain position of the tube, as with the temperature to reach thermal equilibrium, the mercury column constant. When the thermometer leave the human body, the outside temperature is low, result of volume contraction of the mercury and broke on the part of the narrow curved neck, so that part of the mercury that has been promoted to the tube does not come back, mercury remains the height contact with the body.
History development
The first thermometer is invented by Galileo in the 16th century. It was not until 300 years that a easy to use, reliable thermometer to be designed.
Mercury is stored at the end of the ball. When mercury is heated, it will swell, rise along a very narrow glass tube. Therefore, a small change in temperature will lead to a substantial mercury within the glass tube rise up. After testing the body temperature, You should swing the thermometer hard, so the mercury can back to the mercury ball.
In 1714, Gabriel • Fahrenheit developed the mercury thermometer that setting the scale between the freezing point of water and human body temperature range. A Dutch doctors use it to test body temperature for fever patients, but the thermometer is still too large, most doctors can not use it very quickly.
In 1868, the German professor Wunderlich published a book "disease and the body temperature," the book records 25,000 patients at the body temperature, and the size of the thermometer he used is twice than Robert Orr Each thermometer ,it should take 20 minutes to record body temperature every time!
Later, Robert Orr in 1867 designed a fast and accurate measurement of temperature, length of the thermometer is only about 15 cm. Unfortunately, Robert Orr thermometer came late, failed to help Carl • Wunderlich.
1980, invented a talking thermometer. Membrane liquid crystal thermometer represents green when body temperature is normal, yellow represents fever, red represents high fever.
In 1988, there has been breathing pulse electronic thermometer, can be telemetry.

BD Rapid Digital Thermometer

The accuracy of a thermometer is very important, especially in the first few months or the baby. We just have a very bad experience with the poor accuracy of a thermometer, which we thought was in the hospital to send our baby so sick, and it was easy to find, so fine and healthy, that we only learn a lesson. Do not buy cheap thermometers, our cheap thermometer was a nightmare, in order to take the temperature it was a struggle with our baby, because it takes too long to get the temperature that our baby does not make him cry and scream comfort situation much . take It was just very difficult, because he too active to be for much longer. With the BD-speed digital thermometers are all different now, she takes the temperature in a fast 9 seconds. The flexible tip does not hurt the baby when taking rectal temperature. It has a large and easy to read, night light display, which is very helpful. It may be in Celsius or Fahrenheit switch very easily. My experience with the BD Rapid Digital Thermometer is a good and is the best I've had so far.

Wireless Cooking Thermometers-The Different Types

There are many different types of cooking thermometer on the market today with a variety of applications. A number of them are used in kitchens with key experts use in manufacture or preparation of food entree vegetables. How about the preparation of meat and fish dishes? The best cooking thermometer with respect to this type of cooking is the work wireless cooking thermometer.

A wireless thermometer cooking with a display that shows the temp readings, and other options. It also has a notification with the requirements you are when the food is ready. You need only the probe of the thermometer inside the thick side of the meat-space, but do not push as far as the bone fragments. Remember that the probe of the thermometer into the meat position at any time during the preparation of food in the oven or stove or even on the grill. You can also cook the food away with a wireless monitor cooking thermometer. Besides, you can also add your preferred temperature in the preparation of your meat dishes. This way you can cook with care.

Wireless cooking thermometer in various makes and models are already on sale. Many models are renewed generally, to use Wi-Fi more convenient cooking thermometer. A single model is the wage Wireless cooking thermometer that two probes which are more convenient, it might be a meat that you cook, especially if you are grilling has. In addition, there are the pop-up thermometer models, in which pop from the epidermis of the meat that is cooked.

Finding the right style and the brand new wireless cooking thermometer is important before you buy first You need to know what your needs are, and look for the kind of thermometer with the right properties to suit you. You can also use the price comparison with the thermometer think your thermometer applicant list with prices. A good model can be expensive compared to others, but come with a consideration of efficiency, quality and simplicity. So, make a good decision when you are in the selection of the brand and model. An excellent wireless cooking thermometer is essential for cooking the meat properly without poking when examining its doneness. Being well prepared, knows that if the temperature to go to or even exceeds the proper limits, the recipe was not always done well.