【明報專訊】Down

1. The first commercial _ _ _ _ _ _ _ (數碼化的) camera was introduced to the consumer market in 1975.

2. The classic cameras capture images on plastic _ _ _ _ _ (底片) coated with chemical powders. When exposed to light, the powder changes colours and becomes settled after further chemical treatments.

4. In Japan, _ _ _ _ _ _ _ (快門) sounds of the cameras on mobile phones cannot be muted to prevent unauthorised or harassing photo taking.

Across

3. A convex lens (凸透鏡) was used to refract (折射) the light onto the photosensitive area inside the camera. Lenses of different thicknesses or curvatures allow people to capture images of various _ _ _ _ _ _ _ _ _ _ _ _ _ _ (放大倍率).

(Answers on next text)

■Glossary

expose (v) 暴露

settled (adj) 穩定下來的

harassing (adj) 滋擾的

curvature (n) 弧度

[Smarties' Power English 第214期]