Definition of aperture

aperturenoun

miệng vỏ

/ˈæpətʃə(r)//ˈæpərtʃʊr/

The word "aperture" has its roots in Latin. The Latin word "apertura" means "opening" or "hole", and it is derived from the verb "aperire", which means "to open". In the context of physics, particularly optics, the term "aperture" was first used in the 17th century to describe the opening or hole through which light passes. This could be a lens, a mirror, or any other device that controls the flow of light. In the 18th century, the term "aperture" began to be used more specifically to describe the size of the opening or hole, in relation to the amount of light that passes through. Today, the term is still used in optics and photography to refer to the diameter of the aperture or lens opening, which controls the amount of light that enters the camera and affects the image quality.

namespace

a small opening in something

một lỗ nhỏ trong một cái gì đó

Example:
  • The soldier fired the rifle through a narrow aperture in a pile of sandbags.

    Người lính bắn khẩu súng trường qua khẩu độ hẹp trong một đống bao cát.

  • The bell ropes passed through apertures in the ceiling.

    Các dây chuông xuyên qua các lỗ trên trần nhà.

an opening that allows light to reach a lens, especially in cameras

lỗ mở cho phép ánh sáng chiếu tới ống kính, đặc biệt là trong máy ảnh

Example:
  • For flash photography, set the aperture at f. 5.6.

    Để chụp ảnh có đèn flash, hãy đặt khẩu độ ở f. 5.6.

  • Open up the lens aperture to maximize the brightness of the shot.

    Mở khẩu độ ống kính để tối đa hóa độ sáng của ảnh.

  • Binoculars of this aperture are very expensive.

    Ống nhòm có khẩu độ này rất đắt tiền.

Idioms

have/want none of something
to refuse to accept something
  • I offered to pay but he was having none of it.
  • They pretended to be enthusiastic about my work but then suddenly decided they wanted none of it.
  • none but
    (literary)only
  • None but he knew the truth.
  • none the less
    despite this fact
    none other than
    used to emphasize who or what somebody/something is, when this is surprising
  • Her first customer was none other than Mrs Obama.