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Related Concept Videos

Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

1.4K
Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
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Thermometers and Temperature Scales01:22

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Any physical property that depends consistently and reproducibly on temperature can be used as the basis of a thermometer. For example, volume increases with temperature for most substances. This property is the basis for the common alcohol thermometer and the original mercury thermometers. Other properties used to measure temperature include electrical resistance, color, and the emission of infrared radiation.
As many physical properties depend on temperature, the variety of thermometers is...
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Superconductor01:24

Superconductor

1.4K
A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...
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Assessing Body Temperature - Oral01:14

Assessing Body Temperature - Oral

1.0K
Here are the steps to accurately measure oral temperature using an electronic thermometer:
Step 1:
Start by practicing proper hand hygiene to prevent the spread of microorganisms.
Step 2:
Take the thermometer out of the charging unit, switch it on, and wait for the ready sign.
Step 3:
Gently slide the probe cover until a click is heard. This simple action prevents cross-contamination and ensures the correct placement of the probe cover.
Step 4:
Instruct the patient to open their mouth and place...
1.0K
Potentiometer01:30

Potentiometer

1.3K
Voltage and current measurements using a standard voltmeter and ammeter alter the circuit being measured either by drawing or resisting the current flow, which introduces uncertainties in the measurements. Null measurements balance the voltages so that no current flows through the measuring device and, therefore, no alterations occur in the measured circuit.
Suppose the emf of a battery needs to be measured. If the battery is directly connected to a standard voltmeter, the measured quantity is...
1.3K
Assessing Body Temperature - Tympanic membrane01:14

Assessing Body Temperature - Tympanic membrane

828
Assessing tympanic membrane temperature involves using a tympanic membrane thermometer (TMT). Here is a step-by-step guide:
Step 1: Begin by practicing good hand hygiene to prevent the transmission of microorganisms.
Step 2: Turn on the thermometer and wait until the ready sign appears on the screen to ensure accurate measurement.
Step 3: Slide the probe cover in place to prevent cross-contamination.
Step 4: Instruct the patient to tilt their head to the side for comfort and check for cerumen...
828

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Miniaturized Sample Preparation for Transmission Electron Microscopy
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Miniature Mercury Contact Switches For Instrument Temperature Control.

Thomas J Bruno1, Jerry G Shepherd1

  • 1National Bureau of Standards, Boulder, CO 80303.

Journal of Research of the National Bureau of Standards (1977)
|August 4, 2021
PubMed
Summary
This summary is machine-generated.

Researchers developed miniature mercury contact switches for precise laboratory temperature control. These compact devices overcome the size limitations of conventional contact thermometers, enabling wider applications.

Keywords:
contact switchcontact thermometertemperature controllers

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Area of Science:

  • Engineering
  • Materials Science
  • Physics

Background:

  • Commercial contact thermometers are often too large for specialized laboratory applications.
  • Existing temperature control devices have limitations in size and scope.

Purpose of the Study:

  • To design and construct novel miniature mercury contact switches.
  • To enhance the applicability of contact thermometers in laboratory settings.

Main Methods:

  • Modification of existing mercury contact switch designs.
  • Construction of compact switch prototypes.

Main Results:

  • Development of significantly smaller mercury contact switches.
  • Demonstration of suitability for a broader range of laboratory temperature control tasks.

Conclusions:

  • Miniature mercury contact switches offer a viable alternative to larger commercial units.
  • Further discussion on the limitations of these new configurations is provided.