threshold wavelength

简明释义

阈波长

英英释义

例句

1.To achieve efficient light absorption, the threshold wavelength 阈值波长 must be lower than the emission wavelength of the source.

为了实现有效的光吸收，阈值波长 threshold wavelength 必须低于光源的发射波长。

2.A shorter threshold wavelength 阈值波长 typically indicates a higher energy photon.

较短的阈值波长 threshold wavelength 通常表示更高能量的光子。

3.The threshold wavelength 阈值波长 is critical for determining the efficiency of solar cells.

对确定太阳能电池的效率来说，阈值波长 threshold wavelength 是至关重要的。

4.In this experiment, we measured the threshold wavelength 阈值波长 of the material under different temperatures.

在这个实验中，我们测量了材料在不同温度下的阈值波长 threshold wavelength。

5.The threshold wavelength 阈值波长 for this photodetector is around 800 nm.

这个光电探测器的阈值波长 threshold wavelength 大约是800纳米。

作文

In the realm of physics and optics, the concept of threshold wavelength plays a crucial role in understanding the behavior of light and its interaction with matter. The threshold wavelength refers to the specific wavelength of light at which a particular phenomenon occurs, such as the onset of absorption or the initiation of a photochemical reaction. Understanding this concept is vital for various applications, including photography, solar energy, and even biological processes. To illustrate the importance of threshold wavelength, let us consider the process of photosynthesis in plants. Photosynthesis relies on light to convert carbon dioxide and water into glucose and oxygen. However, not all wavelengths of light are equally effective in driving this process. Research has shown that chlorophyll, the green pigment found in plants, absorbs light most efficiently in the blue (around 430 nm) and red (around 660 nm) regions of the spectrum. The threshold wavelength for photosynthesis, therefore, lies within these ranges. If the light wavelength is shorter than the threshold wavelength, it may be too energetic and could damage the plant's cells. Conversely, if the wavelength is longer, it may not provide enough energy to drive the photosynthetic reaction. Another significant application of threshold wavelength can be found in the field of solar cell technology. Solar cells are designed to convert sunlight into electricity, and their efficiency largely depends on the materials used and their respective threshold wavelengths. For instance, silicon-based solar cells have a threshold wavelength around 1100 nm. This means that photons with wavelengths longer than this will not contribute effectively to the generation of electric current. Researchers are continually exploring new materials with lower threshold wavelengths to enhance the efficiency of solar cells, thereby making renewable energy more accessible and sustainable. Furthermore, the concept of threshold wavelength extends beyond natural phenomena and into technological advancements. In laser technology, the threshold wavelength is critical in determining the operational efficiency of lasers. Each type of laser emits light at a specific wavelength, and understanding the threshold wavelength helps in designing lasers that can target specific applications, such as medical treatments or industrial cutting processes. In conclusion, the threshold wavelength is a fundamental concept that bridges the gap between light and matter, revealing the intricate ways in which they interact. Whether in nature, such as in the process of photosynthesis, or in advanced technologies like solar cells and lasers, the threshold wavelength serves as a guiding principle that influences efficiency and effectiveness. As research continues to evolve, a deeper understanding of threshold wavelength will undoubtedly lead to innovations that harness the power of light in ever more efficient and sustainable ways.

在物理学和光学领域，阈值波长的概念在理解光的行为及其与物质的相互作用中起着至关重要的作用。阈值波长指的是特定的光波长，在该波长下会发生特定现象，例如吸收的开始或光化学反应的启动。理解这一概念对于摄影、太阳能甚至生物过程等各种应用至关重要。为了说明阈值波长的重要性，让我们考虑植物中的光合作用过程。光合作用依赖光将二氧化碳和水转化为葡萄糖和氧气。然而，并非所有波长的光在推动这一过程方面都同样有效。研究表明，叶绿素，即植物中发现的绿色颜料，在蓝色（约430纳米）和红色（约660纳米）光谱区域内对光的吸收最为有效。因此，光合作用的阈值波长就位于这些范围内。如果光的波长短于阈值波长，可能会过于能量集中，从而损害植物细胞。相反，如果波长较长，可能无法提供足够的能量来推动光合作用反应。阈值波长的另一个重要应用可以在太阳能电池技术领域找到。太阳能电池旨在将阳光转化为电能，其效率在很大程度上取决于所使用的材料及其各自的阈值波长。例如，基于硅的太阳能电池的阈值波长约为1100纳米。这意味着波长长于此的光子将无法有效地贡献于电流的生成。研究人员不断探索具有更低阈值波长的新材料，以提高太阳能电池的效率，从而使可再生能源更加可及和可持续。此外，阈值波长的概念不仅限于自然现象，还扩展到技术进步。在激光技术中，阈值波长对于确定激光的操作效率至关重要。每种类型的激光以特定波长发射光，理解阈值波长有助于设计能够针对特定应用（如医疗治疗或工业切割过程）的激光。总之，阈值波长是一个基本概念，它架起了光与物质之间的桥梁，揭示了它们相互作用的复杂方式。无论是在自然界中，如光合作用过程，还是在太阳能电池和激光等先进技术中，阈值波长都作为影响效率和效果的指导原则。随着研究的不断发展，对阈值波长的更深入理解无疑将引领创新，利用光的力量以更高效和可持续的方式。