convex lens; converging lens
Tone colorsmāmámǎmàma
Meanings
1 sense · 4 examplesnoun
convex lens; converging lens (thicker at the center than at the edges, causing parallel light rays to converge at a focal point)
technicalIn physics, when an object is placed within the focal length, the lens produces a magnified virtual image. Commonly used in reading glasses (远视眼镜), magnifying glasses (放大镜), and optical instruments.
Yé爷
ye爷
yòng用
tū凸
tòu透
jìng镜
kàn看
shū书
。
Grandpa uses a convex lens to read books.
Tū凸
tòu透
jìng镜
kě可
yǐ以
jù聚
jiāo焦
yáng阳
guāng光
。
A convex lens can focus sunlight.
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Yuǎn远
shì视
yǎn眼
jìng镜
de的
jìng镜
piàn片
shì是
tū凸
tòu透
jìng镜
。
The lenses of reading glasses are convex lenses.
Zhè这
ge个
wàng望
yuǎn远
jìng镜
shǐ使
yòng用
le了
tū凸
tòu透
jìng镜
hé和
āo凹
tòu透
jìng镜
。
This telescope uses both convex and concave lenses.