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相关概念视频

Uncertainty in Measurement: Reading Instruments02:46

Uncertainty in Measurement: Reading Instruments

Counting is the type of measurement that is free from uncertainty, provided the number of objects being counted does not change during the process. Such measurements result in exact numbers. By counting the eggs in a carton, for instance, one can determine exactly how many eggs are there in the carton. Similarly, the numbers of defined quantities are also exact. For example, 1 foot is exactly 12 inches, 1 inch is exactly 2.54 centimeters, and 1 gram is exactly 0.001 kilograms. Quantities...
Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short distances...

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相关实验视频

Updated: Jun 13, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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对高精度长度测量的光学干扰仪的审查

Guangyao Huang1,2, Can Cui2, Xiaoyang Lei1

  • 1College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China.

Micromachines
|January 25, 2025
PubMed
概括

光学干涉计,特别是网格和激光方法,提供高精度的长度测量. 进步包括光学频率,提高了精密计量学的范围和精度.

关键词:
网格干涉测量是指干涉测量的网格.激光干扰计是指激光干扰计.长度测量 长度测量 长度测量一个光学频率.

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Implementation of a Reference Interferometer for Nanodetection
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科学领域:

  • 计量学 计量学 计量学
  • 光学工程是指光学工程.
  • 精确度测量 精确度测量 精确度测量

背景情况:

  • 光学干扰仪对于科学和工业中高精度的长度测量至关重要.
  • 现有的方法在准确性和测量范围方面面临挑战.

研究的目的:

  • 提供对光学干涉测量的最新进展进行全面的审查.
  • 专注于格子和激光干扰测量技术.
  • 突出提高测量精度的创新.

主要方法:

  • 对网格干涉测量系统 (单度至多度自由度) 的审查.
  • 激光干涉测量方法的比较 (同质,异质,白光).
  • 集成光学频率子,以扩大功能.

主要成果:

  • 光学频率可以显著提高激光干扰仪的测量范围和精度.
  • 分析周期性非线性误差和相模拟,以提高精度.
  • 确定当前的挑战和未来的研究方向.

结论:

  • 光学干涉测量继续进步,由光学频率毛等新技术驱动.
  • 解决非线性误差和精炼阶段解调是未来精度增长的关键.
  • 对干扰测量系统的创新对于精密计量学的进步至关重要.