The digital thermometer had a patent taken out for it in 1973 by F. Mueller, B. Martin, J. Chandler, R.
Also, are old digital thermometers accurate?
In this article, the authors identify some discrepancies with digital thermometers but emphasize that it is small. They state: “The most accurate thermometers were within 0.5 degree of our medical thermometer, and all but one were at least good at repeating a retaken temperature.
In this way, what are 3 types of thermometers?
What Are the Different Ways a Thermometer Can Be Used?
- Axillary Thermometers (under your arm)
- Oral Thermometers (under your tongue)
- Tympanic Thermometers (in your ear)
- Rectal Thermometers (in your rectum)
- Temporal Artery or Infrared Thermometers (across your forehead)
What is the history of digital thermometer?
Although a flight surgeon, Theodore Hannes Benzinger, invented the first ear thermometer during World War II, it was Dr. Jacob Fraden at Advanced Monitors Corporation, its CEO, who created in 1984 what is now the most widely used of ear thermometers, but that required digital thermometer technology.
When did thermometers become common?
However, by 1835 Becquerel and Breschet were able to establish the mean temperature of a healthy adult to be 37 °C (98.6 °F). By the 1860s, the use of the thermometer had become more common, and the physiological significance of body temperature was becoming clearer.
When was the first accurate thermometer invented?
Which is more accurate mercury or alcohol thermometer?
It is more durable than alcohol thermometer because mercury does not evaporate easily. It is smaller in size as compared to alcohol one. Mercury does not wet the wall of the thermometer, which means that results can be highly accurate.
Why are glass thermometers rarely used today?
why are glass thermometers rarely used today? it contains mercury, which is a dangerous element. Threat of mercury spills and leak. … Then the thermometer can be rotated until the mercury column can be seen inside the glass rod.