Definition

1. Noun:
   • Convex mirror: A curved mirror in which the reflective surface bulges outward toward the light source. This shape causes light rays to diverge, creating a wider field of view but a smaller, diminished image of objects.

Usage Examples

• Noun:
  • Gương lồi thường được lắp ở góc đường để giúp tài xế quan sát giao thông. (Convex mirrors are often installed at street corners to help drivers observe traffic.)
  • Hình ảnh trong gương lồi trông nhỏ hơn so với thực tế. (The image in a convex mirror appears smaller than in reality.)
  • Anh ấy mua một chiếc gương lồi để lắp trong nhà kho. (He bought a convex mirror to install in the warehouse.)

Advanced Usage

• In optics and physics, a convex mirror is also known as a diverging mirror because it spreads out light rays that strike its surface.
  • Gương lồi được sử dụng trong một số hệ thống kính tiềm vọng. (Convex mirrors are used in some periscope systems.)

Variants and Related Words

• Gương cầu lồi (n): Spherical convex mirror. This is a more precise technical term specifying the mirror's shape as part of a sphere.

  • Gương cầu lồi luôn tạo ra ảnh ảo. (A spherical convex mirror always produces a virtual image.)

• Gương lõm (n): Concave mirror. This is the opposite type of curved mirror, where the surface curves inward.

  • Không nên nhầm lẫn giữa gương lồi và gương lõm. (One should not confuse a convex mirror with a concave mirror.)

Synonyms

• Diverging mirror: A technical synonym emphasizing the mirror's optical property of causing light rays to spread apart.
• Fisheye mirror: A colloquial term sometimes used for wide-angle convex mirrors, especially in security or automotive contexts.

Related Concepts

• Field of view: The visible area seen through or reflected by an optical device. Convex mirrors provide a wider field of view.

  • Lợi ích chính của gương lồi là mở rộng tầm quan sát. (The main benefit of a convex mirror is the expansion of the field of view.)

• Virtual image: The type of image formed by convex mirrors; it cannot be projected onto a screen and is always upright and smaller than the object.

  • Gương lồi luôn tạo ra ảnh ảo, cùng chiều và nhỏ hơn vật. (A convex mirror always produces a virtual image that is upright and smaller than the object.)

1. (ly') Convex mirror