column of mercury

简明释义

汞柱

英英释义

例句

1.Scientists use a column of mercury to calibrate their measuring instruments.

科学家使用水银柱来校准他们的测量仪器。

2.A typical barometer consists of a glass tube filled with a column of mercury.

一个典型的气压计由一根装有水银柱的玻璃管组成。

3.In physics classes, we often demonstrate how a column of mercury can indicate temperature changes.

在物理课上，我们经常演示如何用水银柱来指示温度变化。

4.The barometer measures atmospheric pressure using a column of mercury.

气压计使用水银柱来测量大气压力。

5.When the pressure decreases, the column of mercury in the barometer drops.

当压力降低时，气压计中的水银柱会下降。

作文

The history of thermometers is a fascinating journey through science and technology. One of the most significant advancements in this field was the invention of the mercury thermometer, which utilizes a column of mercury to measure temperature accurately. The concept behind the column of mercury is quite simple yet ingenious. When the temperature rises, the mercury expands and moves up the glass tube, creating a visible column of mercury that indicates the temperature on a calibrated scale. This method of measurement is not only effective but also provides a clear visual representation of temperature changes.In the early days, thermometers were made using various liquids, but mercury became the preferred choice due to its unique properties. Mercury has a high density and a low freezing point, which makes it ideal for measuring a wide range of temperatures. The column of mercury is easily visible, and because mercury does not wet glass, it forms a distinct and consistent column of mercury that can be read accurately.One of the key advantages of using a column of mercury is its precision. Unlike alcohol or other liquids, mercury expands uniformly with temperature changes, allowing for precise measurements. This characteristic has made the mercury thermometer a standard in laboratories and industries for many years. However, the use of mercury has raised concerns due to its toxicity. In recent years, many countries have begun to phase out mercury thermometers in favor of safer alternatives, such as digital thermometers or those filled with alcohol.Despite these concerns, the column of mercury remains a significant part of the history of temperature measurement. It represents a time when science was beginning to understand the importance of accurate measurements in various fields, including medicine, meteorology, and physics. The invention of the mercury thermometer paved the way for advancements in these areas, contributing to our understanding of heat, energy, and the physical properties of materials.In conclusion, the column of mercury is more than just a scientific term; it symbolizes a pivotal moment in the evolution of measurement technology. While we may be moving towards safer alternatives, the legacy of the column of mercury endures in our scientific practices and historical understanding. As we continue to innovate and improve our tools for measuring the world around us, we must also remember the contributions of the past that have shaped our present.

温度计的历史是一段迷人的科学与技术之旅。在这个领域中，一个重要的进展是水银温度计的发明，它利用水银柱来准确测量温度。水银柱背后的概念既简单又巧妙。当温度升高时，水银膨胀并在玻璃管中上升，形成一个可见的水银柱，指示出经过校准的温度。这种测量方法不仅有效，而且提供了温度变化的清晰可视化表示。在早期，温度计使用各种液体制造，但水银因其独特的性质成为首选。水银密度高，凝固点低，这使其理想用于测量广泛的温度范围。水银柱易于观察，并且由于水银不湿润玻璃，因此它形成一个清晰且一致的水银柱，可以准确读取。使用水银柱的一个主要优点是其精确性。与酒精或其他液体不同，水银随着温度变化均匀膨胀，从而允许精确的测量。这一特性使得水银温度计多年在实验室和工业中成为标准。然而，水银的使用引发了对其毒性的担忧。近年来，许多国家开始逐步淘汰水银温度计，转向更安全的替代品，如数字温度计或填充酒精的温度计。尽管存在这些担忧，水银柱仍然是温度测量历史的重要组成部分。它代表了科学开始理解在医学、气象学和物理学等各个领域中准确测量的重要性的时候。水银温度计的发明为这些领域的进步铺平了道路，促进了我们对热量、能量和材料物理性质的理解。总之，水银柱不仅仅是一个科学术语；它象征着测量技术演变中的一个关键时刻。虽然我们可能正在朝着更安全的替代品迈进，但水银柱的遗产在我们的科学实践和历史理解中依然存在。随着我们继续创新和改进测量周围世界的工具，我们也必须记住过去那些塑造我们现在的贡献。