cầu kế
Definition
- Noun:
- Spherometer: A precise scientific instrument used to measure the radius of curvature of a spherical surface, such as a lens or a mirror.
Usage Examples
- Noun:
- Nhà quang học dùng cầu kế để đo độ cong của thấu kính. (The optician uses a spherometer to measure the curvature of the lens.)
- Độ chính xác của cầu kế rất cao. (The accuracy of the spherometer is very high.)
Advanced Usage
- This is a specialized technical term used primarily in the fields of optics, physics, and precision engineering. It is not commonly used in everyday conversation.
Variants and Related Words
- Đo độ cong: (v) to measure curvature.
- Thấu kính: (n) lens.
- Mặt cầu: (n) spherical surface.
Synonyms
- Spherometer (direct equivalent).
Notes
- "Cầu kế" is a compound word formed from "cầu" (sphere, arch) and "kế" (meter, measuring device). It is a direct and technical translation of the instrument's function.