Difference Between Thermometry and Thermography

Thekey difference betweenthermometry and thermography is thatthermometry describes the measurement of the temperature of an object, whereas thermography describes the measurement of abnormally hot or cold areas on an object.

Both thermometry and thermography are important measurement techniques in chemistry that can be used to measure parameters regarding the temperature of an object. These two measurement techniques have applications in the field of analytical chemistry.

CONTENTS

1.Overview and Key Difference
2.What is Thermography
3.What is Thermography
4.并排比较 - 表格形式的温度计与热量表
5.概括

What is Thermometry?

温度法是对物体温度的测量。更确切地说，它描述了对象的当前温度的测量，以立即或以后进行评估。温度法包括重复的标准化测量，以评估物体的温度趋势。

Many different methods can be used to measure the temperature of an object. Most commonly, these methods measure the variation of a particular property with the temperature. The most often used instrument for temperature measurement is glass thermometer. This glass thermometer contains a glass tube that is filled with mercury, and thus called水星温度计。汞充当工作液体，其体积随温度的变化而变化。例如，汞量随温度升高而膨胀。但是，该方法将温度作为与工作液体体积的相对参数。因此，通常对温度计进行校准，以便我们可以轻松获得测量。另一个类似的设备是气体温度计，它使用气体代替液体。

There are many other techniques that can be used for the temperature measurement other than thermometers. Some examples includethermocouples, thermistors,resistant temperature detectors, pyrometers, Langmuir probes, etc.

What is Thermography?

Thermography is the process of measuring abnormally hot or cold areas on an object. This measurement is taken under normal atmospheric conditions so that the variations in temperature can be detected easily. The end result of the thermography is given as a thermogram.

A thermogram is a thermal image which displays the amount of IR energy emitted, reflected, or transmitted by an objected. Obtaining the readings using this method is difficult because there are multiple sources of IR辐射。However, a thermal imaging camera is capable of performing the algorithms and build an appropriate image by interpreting the data.

A significant application of thermography is the thermal imaging of warm-blooded animals during clinical diagnostics. Therefore, it has applications in the field of medicine for allergy detection and in veterinary medicine.

What is the Difference Between Thermometry and Thermography?

Both thermometry and thermography are important measurement techniques in chemistry that can be used to measure the parameters regarding the temperature of an object. The key difference between thermometry and thermography is that thermometry describes the measurement of the temperature of an object, whereas thermography describes the measurement of abnormally hot or cold areas on an object. Moreover, thermometry uses thermometers as instruments, while thermography uses IR thermographic cameras.

The following table summarizes the difference between thermometry and thermography.

摘要 - 温度计与热量计学

Both thermometry and thermography are important measurement techniques in chemistry that can be used to measure the parameters regarding the temperature of an object. The key difference between thermometry and thermography is that thermometry describes the measurement of the temperature of an object, whereas thermography describes the measurement of abnormally hot or cold areas on an object.

Reference:

1. “Thermometry.” WikiLectures,Available here。
2. “Temperature Measurement.” Wikipedia, Wikimedia Foundation, 8 May 2020,Available here。

Image Courtesy:

1. “Clinical thermometer 38.7” By Menchi – Own work(CC BY-SA 3.0)viaCommons Wikimedia

2. “Human-Infrared” By NASA/IPAC – Transwiki approved by: w:en:User:Dmcdevit This image was copied from wikipedia:en. – comes from a NASA “Cool Cosmos”website（公共领域）通过Commons Wikimedia