bunsen burner

简明释义

本生灯

英英释义

例句

1.In the chemistry lab, we used a bunsen burner to heat the solution until it boiled.

在化学实验室，我们使用本生灯加热溶液，直到它沸腾。

2.The teacher demonstrated how to light the bunsen burner safely.

老师演示了如何安全点燃本生灯。

3.Using a bunsen burner, you can achieve high temperatures needed for certain experiments.

使用本生灯，您可以达到某些实验所需的高温。

4.Make sure to adjust the flame of the bunsen burner before starting the experiment.

在开始实验之前，请确保调整本生灯的火焰。

5.We placed the test tube over the bunsen burner to observe the reaction.

我们将试管放在本生灯上以观察反应。

作文

In the realm of scientific experimentation, few tools are as iconic as the bunsen burner. This simple yet effective device has been a staple in laboratories for over a century, providing a reliable source of heat for various chemical reactions and experiments. The bunsen burner is named after its inventor, Robert Bunsen, a German chemist who developed this apparatus in the mid-19th century. Its design is straightforward: it consists of a metal tube connected to a gas source, with an adjustable air intake that allows for the regulation of the flame's size and intensity.The primary function of the bunsen burner is to provide a controlled flame that can be used for heating substances, sterilizing equipment, or conducting combustion reactions. In a typical laboratory setting, you will often find scientists using the bunsen burner to heat test tubes, flasks, and other glassware. The ability to adjust the flame is crucial; a hotter flame is needed for certain reactions, while a cooler flame may suffice for others. This versatility makes the bunsen burner an indispensable tool in many scientific fields, including chemistry, biology, and physics.When using a bunsen burner, safety is paramount. It is essential to follow proper protocols to prevent accidents, such as burns or fires. Users should always wear appropriate personal protective equipment, such as lab coats and safety goggles. Additionally, it is vital to ensure that the area around the bunsen burner is free from flammable materials. Before igniting the burner, one should check for gas leaks and ensure that the burner is properly connected to the gas supply.The flame produced by a bunsen burner can be adjusted to create different types of flames. The three main types are the safety flame, the luminous flame, and the non-luminous flame. The safety flame is characterized by a yellow color and is used when the burner is not in active use, as it is less likely to ignite surrounding materials. The luminous flame, which is also yellow, is used when a higher temperature is needed but produces soot, which can contaminate experiments. The non-luminous flame, on the other hand, is blue and indicates complete combustion, providing the hottest temperature and the cleanest burn.In educational settings, the bunsen burner is often one of the first pieces of equipment that students learn to use. It serves as an introduction to the principles of combustion and heat transfer. Students learn how to light the burner safely, adjust the flame, and use it to conduct simple experiments, such as heating water or performing chemical reactions. This hands-on experience is invaluable, as it helps to solidify theoretical knowledge and fosters a deeper understanding of scientific concepts.In conclusion, the bunsen burner is more than just a piece of laboratory equipment; it is a symbol of scientific inquiry and experimentation. Its simple design belies the complexity and importance of the processes it facilitates. From its historical roots in the 19th century to its continued relevance in modern laboratories, the bunsen burner remains a fundamental tool for scientists and students alike, embodying the spirit of discovery and innovation in the scientific community.

在科学实验的领域中，少有工具如bunsen burner（本生灯）一样标志性。这种简单而有效的设备在实验室中已经成为百年来的主流，为各种化学反应和实验提供可靠的热源。bunsen burner以其发明者罗伯特·本生的名字命名，这位德国化学家在19世纪中期开发了这一装置。它的设计非常简单：由一个金属管连接到气体源，带有可调节的空气进口，可以调节火焰的大小和强度。bunsen burner的主要功能是提供一种可控的火焰，可用于加热物质、消毒设备或进行燃烧反应。在典型的实验室环境中，科学家们经常使用bunsen burner来加热试管、烧瓶和其他玻璃器皿。调节火焰的能力至关重要；某些反应需要更热的火焰，而其他反应可能只需较冷的火焰。这种多功能性使得bunsen burner成为许多科学领域（包括化学、生物学和物理学）中不可或缺的工具。在使用bunsen burner时，安全是重中之重。遵循适当的协议以防止事故（如烧伤或火灾）至关重要。用户应始终佩戴适当的个人防护装备，如实验室外套和安全护目镜。此外，确保bunsen burner周围的区域没有易燃材料也至关重要。在点燃燃烧器之前，应检查气体泄漏并确保燃烧器正确连接到气体供应。bunsen burner产生的火焰可以调节以创建不同类型的火焰。主要有三种类型：安全火焰、发光火焰和非发光火焰。安全火焰的特点是黄色，当燃烧器不在使用时使用，因为它不太可能点燃周围材料。发光火焰也是黄色的，用于需要更高温度但会产生烟灰的情况，这可能会污染实验。而非发光火焰则是蓝色的，表示完全燃烧，提供最高的温度和最干净的燃烧。在教育环境中，bunsen burner通常是学生学习使用的第一件设备。它作为引入燃烧和热传递原理的工具。学生们学习如何安全点燃燃烧器、调节火焰以及使用它进行简单实验，例如加热水或进行化学反应。这种动手体验是无价的，因为它有助于巩固理论知识，并促进对科学概念的更深入理解。总之，bunsen burner不仅仅是一件实验室设备；它是科学探索和实验的象征。其简单的设计掩盖了其促进的过程的复杂性和重要性。从19世纪的历史根源到现代实验室中的持续相关性，bunsen burner仍然是科学家和学生们的基本工具，体现了科学界探索和创新的精神。