object distance

简明释义

目标距离

英英释义

例句

1.When using a microscope, the object distance (物体距离) determines how clearly you can see the specimen.

使用显微镜时，物体距离决定了你能多清楚地看到标本。

2.In photography, adjusting the lens can help to focus on the subject by changing the object distance (物体距离).

在摄影中，调整镜头可以通过改变物体距离来帮助聚焦于主题。

3.To achieve a clear image, you need to maintain the correct object distance (物体距离) from the camera.

为了获得清晰的图像，你需要保持与相机的正确物体距离。

4.The object distance (物体距离) affects the magnification in telescopes.

在望远镜中，物体距离会影响放大倍率。

5.In optics, the object distance (物体距离) is crucial for calculating the focal length of a lens.

在光学中，物体距离对于计算镜头的焦距至关重要。

作文

In the field of optics, understanding the concept of object distance is crucial for anyone studying light behavior and image formation. The term object distance refers to the distance between the object being observed and the optical device, such as a lens or mirror. This distance plays a significant role in determining how an image is formed and its characteristics, including size, orientation, and clarity.When light rays emanate from an object, they travel towards the optical device. Depending on the object distance, the rays will converge at different points after passing through the lens or reflecting off a mirror. For instance, when the object distance is greater than the focal length of a convex lens, the light rays converge to form a real image on the opposite side of the lens. This image can be projected onto a screen and is inverted compared to the original object. Conversely, if the object distance is less than the focal length, the lens produces a virtual image that cannot be projected onto a screen, appearing upright and larger than the actual object.Understanding object distance is not only essential in theoretical studies but also has practical applications in various fields. In photography, for example, photographers must consider object distance to achieve the desired focus and depth of field in their images. A closer object distance often results in a shallower depth of field, which can beautifully blur the background while keeping the subject sharp. This technique is widely used in portrait photography to emphasize the subject and create a pleasing aesthetic.In the medical field, particularly in endoscopy, the object distance is critical for obtaining clear images of internal organs. Endoscopes are equipped with lenses that need to be positioned at the correct object distance to ensure optimal visibility. If the object distance is too short or too long, the images may become blurry, making it difficult for doctors to diagnose conditions accurately.Furthermore, in the realm of education, teaching students about object distance can enhance their understanding of physics principles. Experiments involving lenses and mirrors allow students to visualize how changing the object distance affects the resulting image. Such hands-on learning experiences can spark curiosity and deepen interest in scientific exploration.In conclusion, the concept of object distance is fundamental in optics and has far-reaching implications across various domains. From photography to medicine and education, understanding how object distance influences image formation is essential for achieving desired outcomes. As technology continues to advance, the importance of mastering this concept will only grow, underscoring the need for ongoing study and application of optical principles in our increasingly visual world.

在光学领域，理解物体距离的概念对任何研究光行为和图像形成的人来说都是至关重要的。术语物体距离指的是被观察物体与光学设备（如透镜或镜子）之间的距离。这个距离在决定图像的形成及其特征（包括大小、方向和清晰度）方面起着重要作用。当光线从物体发出时，它们朝光学设备传播。根据物体距离的不同，光线在通过透镜或反射镜后将在不同的点汇聚。例如，当物体距离大于凸透镜的焦距时，光线汇聚形成一个真实图像，在透镜的另一侧。这个图像可以投影到屏幕上，并且与原始物体相反。相反，如果物体距离小于焦距，透镜会产生一个虚像，无法投影到屏幕上，看起来直立且比实际物体大。理解物体距离不仅在理论研究中至关重要，而且在各个领域都有实际应用。例如，在摄影中，摄影师必须考虑物体距离以实现所需的焦点和景深。较近的物体距离通常会导致较浅的景深，这可以优美地模糊背景，同时保持主体清晰。这种技术在肖像摄影中被广泛使用，以强调主体并创造出令人愉悦的美感。在医学领域，尤其是在内窥镜检查中，物体距离对于获取内部器官的清晰图像至关重要。内窥镜配备了需要在正确的物体距离下定位的透镜，以确保最佳可见性。如果物体距离过短或过长，图像可能会变得模糊，使医生难以准确诊断病情。此外，在教育领域，教授学生关于物体距离的知识可以增强他们对物理原理的理解。涉及透镜和镜子的实验使学生能够直观地理解改变物体距离如何影响生成的图像。这种动手学习体验可以激发好奇心，深化对科学探索的兴趣。总之，物体距离的概念在光学中是基础性的，并在各个领域具有深远的影响。从摄影到医学再到教育，理解物体距离如何影响图像形成对于实现预期结果至关重要。随着技术的不断进步，掌握这一概念的重要性只会增加，强调了在我们日益视觉化的世界中对光学原理进行持续研究和应用的必要性。