For centuries medical thermometers were large, and took many minutes to register a temperature. Factors that increase range would at the same time reduce its sensitivity. Range is the converse of sensitivity, i.e., the longer the range, the lower is its sensitivity. Post was not sent - check your email addresses! Doctors use a special thermometer called the clinical thermometer for measuring the temperature of the patient’s body. As the liquid is contained in a thin-walled, small glass bulb, it will be more responsive (faster response) to heat. View Answer. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Structure: The thermometer is made relatively small so that it is portable and cheap. Operating principle. 3 mins read. Laboratory Thermometer. Small expansion of the liquid in the liquid bulb will cause a big change in the length of the liquid thread in the capillary tube as it is made narrow. It has a slight bend or kink in the stem just above the bulb. The range is limited by the freezing and boiling points of liquid. Thermometer types. From Simple English Wikipedia, the free encyclopedia,, Creative Commons Attribution/Share-Alike License. Liquid-in-glass thermometers are based on the principle of thermal expansion of substances. The liquid is contained in a thin-walled glass bulb. It acts as a magnifying glass. Learn with Videos. Coronaviruses cause a variety of diseases in animals ranging from cows, pigs to chicken, and other birds. Main Types of thermometer are given in the list below: Clinical or Medical thermometers. Structure of laboratory thermometer. Cloudflare Ray ID: 5f86b0208a189ace clinical thermometer; A Medical thermometer is used to measure body temperature. Answer in brief Q.3 state the principal of a mercury thermometer How to convvert celcius and kelvin scale What is Density .? Most made in the 20th century are mercury-in-glass thermometers. This is just gr8….cn learn more abt Physics anywhere!! Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window), Click to share on Reddit (Opens in new window), Click to share on Telegram (Opens in new window), Click to share on WhatsApp (Opens in new window), Click to email this to a friend (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on Tumblr (Opens in new window), Click to share on Pinterest (Opens in new window), Click to share on Pocket (Opens in new window), Click to share on Skype (Opens in new window), Differences between boiling and evaporation, Case Study 2: Energy Conversion for A Bouncing Ball, Case Study 1: Energy Conversion for An Oscillating Ideal Pendulum. This kink is called the constriction. Notify me of follow-up comments by email. The range of a clinical thermometer is. It takes several tens of seconds to record one reading. Your IP: The temperature scale is marked outside the glass tube of the thermometer. In the 20th century, the traditional clinical thermometer was a mercury-in-glass thermometer.People put the end of this in their mouth (oral temperature), under their arm, or in their rectum (rectal temperature).It is only possible to find oral temperatures on patients who can hold the thermometer … Quick summary with Stories. The narrow bore of the capillary tube is uniform. Another way to prevent getting this page in the future is to use Privacy Pass. 24 hour clock is used in the airline ticketing When are approximations necessary in daily life why is pendulam not used for time? This thermometer has the markings from 35°C to 42°C. The range can be increased by lengthening the bore. Example Definitions Formulaes. Related Questions to study. Mercury reacts quickly to the temperature changes whereas alcohol reacts slowly. They are accurate and sensitive, having a narrow place where the mercury level rises very fast. Digital thermometers became widespread in the late 20th century. This constriction prevents the mercury from falling back all by itself. thanks1. Coronaviruses (CoVs) are enveloped positive-sense RNA viruses. The bulb is made relatively larger than its bore to contain more of the liquid, so as to improve sensitivity. Sorry, your blog cannot share posts by email. Mercury expands quite uniformly over a good range of temperatures. The narrow bore of the capillary tube is uniform. In colder countries, most of its liquid-in-glass thermometers use alcohol and not mercury. Made with | 2010 - 2020 | Mini Physics |. These thermometers are used in clinics by doctors, it is a clinical thermometers they are also called a doctor's thermometers or medical thermometers. Most show both Celsius scale and Fahrenheit temperature scales, and run from 35 degree Celsius to 42 degree Celsius.

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