ultraviolet light

简明释义

紫外线

英英释义

例句

1.Sunscreen is essential for protecting your skin from ultraviolet light (紫外线) when you spend time outdoors.

在户外活动时，防晒霜是保护皮肤免受紫外线（ultraviolet light）伤害的必需品。

2.Many fluorescent lamps emit ultraviolet light (紫外线), which can be harmful to your eyes.

许多荧光灯会发出紫外线（ultraviolet light），这可能对你的眼睛有害。

3.Tanning beds often use ultraviolet light (紫外线) to achieve a bronzed look.

日光浴床通常使用紫外线（ultraviolet light）来达到古铜色的效果。

4.Some sterilization processes use ultraviolet light (紫外线) to eliminate bacteria and viruses.

一些消毒过程使用紫外线（ultraviolet light）来消灭细菌和病毒。

5.Certain types of plants require ultraviolet light (紫外线) for optimal growth.

某些类型的植物需要紫外线（ultraviolet light）以获得最佳生长。

作文

Ultraviolet light, often abbreviated as UV light, is a type of electromagnetic radiation that falls between visible light and X-rays on the electromagnetic spectrum. It has wavelengths ranging from approximately 10 nm to 400 nm. Although it is invisible to the human eye, ultraviolet light (紫外线) plays a significant role in various natural processes and has numerous applications in different fields.One of the most well-known effects of ultraviolet light (紫外线) is its ability to cause sunburns. When our skin is exposed to sunlight, it absorbs ultraviolet light (紫外线), which can damage the DNA in skin cells. This damage triggers the body’s defense mechanism, leading to inflammation and redness, commonly known as sunburn. Prolonged exposure to ultraviolet light (紫外线) can increase the risk of skin cancer, making it essential to use sunscreen and protective clothing when spending time outdoors.In addition to its harmful effects, ultraviolet light (紫外线) also has beneficial applications. For instance, it is used in sterilization processes. Hospitals and laboratories utilize ultraviolet light (紫外线) to disinfect surfaces and equipment, effectively killing bacteria and viruses. The germicidal properties of ultraviolet light (紫外线) make it an invaluable tool in maintaining hygiene and preventing the spread of infections.Moreover, ultraviolet light (紫外线) is crucial for the production of vitamin D in our bodies. When our skin is exposed to ultraviolet light (紫外线), it synthesizes vitamin D, which is vital for bone health and immune function. This is why moderate sun exposure is often recommended, as it helps maintain adequate levels of vitamin D without excessive risk of skin damage.In the field of photography, ultraviolet light (紫外线) has unique uses as well. Photographers sometimes use UV filters to reduce the haziness caused by atmospheric particles, allowing for clearer images, especially in landscapes. Furthermore, certain materials fluoresce under ultraviolet light (紫外线), making it useful in forensic science to detect substances that are otherwise invisible under normal lighting conditions.The study of ultraviolet light (紫外线) also extends to astronomy. Astronomers use UV telescopes to observe celestial objects, as many astronomical phenomena emit radiation in the ultraviolet light (紫外线) spectrum. This helps scientists understand the composition and behavior of stars, galaxies, and other celestial bodies.However, it is essential to be aware of the potential dangers associated with ultraviolet light (紫外线). While it has various beneficial applications, excessive exposure can lead to serious health issues such as skin cancer, cataracts, and weakened immune response. Therefore, it is crucial to balance the benefits and risks associated with ultraviolet light (紫外线).In conclusion, ultraviolet light (紫外线) is a fascinating and multifaceted aspect of the electromagnetic spectrum. Its ability to both harm and heal underscores the importance of understanding its properties and effects. By taking appropriate precautions, we can harness the benefits of ultraviolet light (紫外线) while minimizing its risks, ensuring a healthier and safer environment for all.

紫外线，通常缩写为UV光，是一种电磁辐射类型，位于可见光和X射线之间，波长范围大约为10纳米到400纳米。虽然人眼看不见，但紫外线在各种自然过程中起着重要作用，并在不同领域有许多应用。紫外线最著名的效应之一是它导致晒伤的能力。当我们的皮肤暴露在阳光下时，它吸收紫外线，这可能会损害皮肤细胞中的DNA。这种损害触发了身体的防御机制，导致炎症和红肿，通常称为晒伤。长期暴露于紫外线下会增加皮肤癌的风险，因此在户外活动时使用防晒霜和保护性衣物至关重要。除了有害影响外，紫外线还有许多有益的应用。例如，它被用于消毒过程。医院和实验室利用紫外线来消毒表面和设备，有效杀死细菌和病毒。紫外线的杀菌特性使其成为维持卫生和防止感染传播的宝贵工具。此外，紫外线对我们体内维生素D的产生至关重要。当我们的皮肤暴露在紫外线下时，它合成维生素D，这对骨骼健康和免疫功能至关重要。这就是为什么适度的阳光暴露通常被推荐，因为它有助于维持足够的维生素D水平，而不会过度增加皮肤损伤的风险。在摄影领域，紫外线也有独特的用途。摄影师有时使用UV滤镜来减少由大气颗粒引起的模糊，使图像更清晰，尤其是在风景摄影中。此外，某些材料在紫外线下会荧光，这使其在法医学中非常有用，可以检测在正常光照条件下不可见的物质。对紫外线的研究还扩展到天文学。天文学家使用UV望远镜观察天体，因为许多天文现象在紫外线谱中发出辐射。这帮助科学家理解恒星、星系和其他天体的组成和行为。然而，必须意识到与紫外线相关的潜在危险。虽然它有多种有益应用，但过度暴露可能导致严重健康问题，如皮肤癌、白内障和免疫反应减弱。因此，平衡与紫外线相关的益处和风险至关重要。总之，紫外线是电磁谱中一个迷人而多面的方面。它既能伤害又能治愈的能力突显了理解其属性和影响的重要性。通过采取适当的预防措施，我们可以在最大程度上降低紫外线的风险，同时利用其带来的好处，为所有人创造一个更健康和安全的环境。