fluorescence
简明释义
n. 荧光；荧光性
英英释义
单词用法
荧光光谱 | |
荧光强度 |
同义词
反义词
| 磷光 | Phosphorescence occurs when a substance absorbs light and re-emits it over a longer period. | 磷光发生在物质吸收光并在较长的时间内重新发射光时。 | |
| 非荧光 | Non-fluorescence materials do not emit light upon excitation. | 非荧光材料在激发后不会发出光。 |
例句
1.These can be analysed by a technique that USES fluorescence to read the sequences of the letters that compose the molecules.
它们可以通过利用荧光技术来分析，以读出其序列。
2.As they move off to share their cigarette pack, the electrical system abruptly shuts down, the fluorescence of sunset our only light.
他们下车的时候把那包烟分了，这时，电路突然出现故障，只有夕阳的光芒照着我们。
3.left : the fluorescence image of Salmonella sample treated by heterostructured nanorods with antibodies.
左图：用异质结构的附着抗体的纳米棒，处理的沙门氏菌显现出荧光的图片。
4.Researchers hope such animals will help scientists track the course of disease via fluorescence.
研究人员希望这些动物将会帮助科学家通过荧光追踪疾病的进程。
5.Crystal habit, luster, color, streak, cleavage, fracture, fluorescence, phosphorescence, specific gravity and magnetism.
晶体习性、光泽、颜色、条痕、解理、裂理、荧光、磷光、比重和磁性。
6.In many atomic fluorescence applications a non - dispersive optical system may be used.
在许多原子荧光法的应用中，可以采用非分散的光学系统。
7.In biology, fluorescence 荧光 microscopy is used to visualize cellular components.
在生物学中，fluorescence 荧光显微镜用于可视化细胞成分。
8.The bright fluorescence 荧光 of the jellyfish captivated the researchers.
水母明亮的fluorescence 荧光吸引了研究人员的注意。
9.The fluorescence 荧光 of certain dyes can help identify different substances in forensic science.
某些染料的fluorescence 荧光可以帮助法医学识别不同的物质。
10.They used a fluorescence 荧光 marker to track the movement of proteins in the experiment.
他们使用fluorescence 荧光标记来追踪实验中蛋白质的运动。
11.The scientist observed the fluorescence 荧光 of the mineral under UV light.
科学家在紫外线下观察到矿物的fluorescence 荧光。
作文
Fluorescence is a fascinating phenomenon that occurs when certain materials absorb light or other electromagnetic radiation and then re-emit it. This process is not only scientifically interesting but also has practical applications in various fields, including biology, chemistry, and technology. In essence, when a substance exhibits fluorescence (荧光), it absorbs photons and then emits them at a longer wavelength, which often makes the emitted light visible to the naked eye. One of the most common examples of fluorescence (荧光) can be observed in fluorescent lamps. These lamps contain a gas that, when electrified, produces ultraviolet light. This ultraviolet light then interacts with a phosphor coating on the inside of the lamp, causing it to glow brightly. This process is efficient and allows for a significant amount of light to be produced with relatively low energy consumption. The science behind this is rooted in the principles of fluorescence (荧光), showcasing how energy can be transformed and utilized effectively.In the field of biology, fluorescence (荧光) plays a crucial role in various imaging techniques. For instance, scientists often use fluorescent dyes to label specific proteins or cells in order to study their behavior under a microscope. When these labeled cells are illuminated with a specific wavelength of light, they emit light of a different color, allowing researchers to visualize structures that would otherwise be invisible. This application of fluorescence (荧光) has revolutionized our understanding of cellular processes and has led to numerous breakthroughs in medical research.Moreover, fluorescence (荧光) is not limited to laboratory settings. It can also be found in nature. Many organisms, such as jellyfish and certain types of corals, exhibit natural fluorescence (荧光). This ability to glow can serve various purposes, including attracting mates, deterring predators, or luring prey. The vibrant colors produced by these organisms are not only beautiful but also serve essential functions in their ecosystems.The study of fluorescence (荧光) has also led to advancements in technology. For example, in the world of displays, the principles of fluorescence (荧光) are utilized in the development of screens and monitors. Organic light-emitting diodes (OLEDs) rely on similar mechanisms to produce vivid colors and high contrast ratios that enhance the viewing experience. As technology continues to evolve, the applications of fluorescence (荧光) are likely to expand even further, leading to new innovations in various industries.In conclusion, fluorescence (荧光) is a remarkable phenomenon that bridges the gap between science and everyday life. From its applications in lighting and biological research to its presence in nature and technological advancements, the significance of fluorescence (荧光) cannot be overstated. Understanding this process not only enhances our knowledge of the physical world but also opens doors to new possibilities in science and technology. As we continue to explore the intricacies of fluorescence (荧光), we may uncover even more exciting applications that can benefit society as a whole.
