parabolic reflector

简明释义

抛物面反射器

英英释义

例句

1.A satellite dish is an example of a parabolic reflector（抛物面反射器） that focuses signals from space.

卫星天线是一个parabolic reflector（抛物面反射器）的例子，它聚焦来自太空的信号。

2.The headlights of modern cars often use a parabolic reflector（抛物面反射器） to provide better illumination on the road.

现代汽车的车头灯通常使用parabolic reflector（抛物面反射器）来提供更好的道路照明。

3.The parabolic reflector（抛物面反射器） in this projector enhances the brightness of the image displayed.

这个投影仪中的parabolic reflector（抛物面反射器）增强了显示图像的亮度。

4.The design of a parabolic reflector（抛物面反射器） allows it to direct light efficiently in solar cookers.

parabolic reflector（抛物面反射器）的设计使其能够在太阳能炉中有效地引导光线。

5.In telescopes, a parabolic reflector（抛物面反射器） is used to gather and focus light from distant stars.

在望远镜中，parabolic reflector（抛物面反射器）用于收集和聚焦来自遥远星星的光线。

作文

The concept of a parabolic reflector is fundamental in various fields, including physics, engineering, and even astronomy. A parabolic reflector is a device that reflects light or sound waves to a single focal point. This unique property makes it incredibly useful in applications such as satellite dishes, telescopes, and even in the design of certain types of lighting. The shape of a parabolic reflector is derived from the mathematical parabola, which has the characteristic of directing rays parallel to its axis toward the focus. Understanding this concept can help us appreciate the technology we often take for granted in our daily lives.In practical terms, a parabolic reflector can be seen in action when we consider how satellite dishes work. These dishes are designed to capture signals from satellites orbiting the Earth. The curved surface of the dish acts as a parabolic reflector, collecting signals that are incoming at various angles and reflecting them towards the receiver located at the focal point. This design maximizes signal strength and ensures that the transmitted data is clear and reliable. Without the effective use of a parabolic reflector, communication via satellite would be significantly hindered.Another fascinating application of a parabolic reflector can be found in the field of astronomy. Telescopes often utilize this design to gather light from distant celestial bodies. The large, curved mirrors in these telescopes serve as parabolic reflectors, focusing light onto a detector or an eyepiece. This allows astronomers to observe stars, planets, and other astronomical phenomena with remarkable clarity. The ability to collect and concentrate light is crucial for making significant discoveries in the universe, and the parabolic reflector plays a pivotal role in this process.In addition to communication and astronomy, parabolic reflectors are also employed in various types of lighting. For instance, in stage lighting and automotive headlights, these reflectors help direct light more efficiently. By shaping the reflector into a parabolic form, the light emitted from the source can be directed forward in a concentrated beam, enhancing visibility and creating dramatic effects in performances. This principle is not only applied in entertainment but also in everyday objects like flashlights and indoor lighting fixtures.Moreover, the efficiency of a parabolic reflector can lead to energy savings. In solar energy applications, parabolic troughs are used to concentrate sunlight onto a receiver tube filled with a heat-transfer fluid. This process generates steam, which can then be used to drive turbines and produce electricity. The design of the parabolic reflector enables the system to harness solar energy effectively, making it a critical component in renewable energy technologies.In conclusion, the parabolic reflector is a versatile and essential tool that finds applications across numerous domains. From enhancing communication systems to aiding in astronomical observations and optimizing lighting solutions, its unique properties allow for the efficient collection and direction of waves. As technology continues to evolve, the significance of the parabolic reflector will likely grow, further cementing its place as a fundamental element in both scientific and practical applications. By understanding the principles behind parabolic reflectors, we can better appreciate the innovations that shape our modern world.

抛物面反射器的概念在物理学、工程学乃至天文学等多个领域中都是基础性的。抛物面反射器是一种能够将光或声波反射到一个焦点的装置。这一独特的属性使得它在卫星天线、望远镜，甚至某些类型的照明设计中极为有用。抛物面反射器的形状源自数学中的抛物线，其特征是将平行于其轴的光线引导到焦点。理解这一概念可以帮助我们欣赏日常生活中我们常常视为理所当然的技术。在实际应用中，当我们考虑卫星天线如何工作时，可以看到抛物面反射器的实际作用。这些天线被设计用来捕捉来自地球轨道卫星的信号。天线的曲面作为抛物面反射器，收集以各种角度入射的信号，并将其反射到位于焦点的接收器上。这种设计最大化了信号强度，确保传输的数据清晰可靠。如果没有有效利用抛物面反射器，卫星通信将受到显著阻碍。抛物面反射器的另一个迷人应用可以在天文学领域找到。望远镜通常利用这种设计来收集来自遥远天体的光线。这些望远镜中的大曲面镜作为抛物面反射器，聚焦光线到探测器或目镜上。这使得天文学家能够以惊人的清晰度观察星星、行星和其他天文现象。收集和集中光线的能力对于在宇宙中进行重大发现至关重要，而抛物面反射器在这一过程中扮演着关键角色。除了通信和天文学，抛物面反射器还用于各种类型的照明。例如，在舞台照明和汽车前灯中，这些反射器有助于更有效地引导光线。通过将反射器塑造成抛物线的形式，发光源发出的光可以集中向前发射，增强能见度并在表演中创造出戏剧性的效果。这一原理不仅应用于娱乐，还应用于日常物品，如手电筒和室内照明设备。此外，抛物面反射器的高效性可以带来节能。在太阳能应用中，抛物面槽被用来将阳光集中到填充有热传递流体的接收管上。这个过程产生蒸汽，随后可以用来驱动涡轮机并产生电力。抛物面反射器的设计使得该系统能够有效地利用太阳能，成为可再生能源技术中的关键组成部分。总之，抛物面反射器是一个多功能且必不可少的工具，在众多领域中都有应用。从增强通信系统到帮助天文观察，再到优化照明解决方案，它的独特属性使得波的有效收集和引导成为可能。随着技术的不断发展，抛物面反射器的重要性可能会进一步增长，进一步巩固其在科学和实际应用中的基础地位。通过理解抛物面反射器背后的原理，我们能够更好地欣赏塑造我们现代世界的创新。