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Ehebrescomgo
Answered

When was lenses discovered?

A. 1st century AD C. 3rd century AD

B. 2nd century AD D.4th century AD​

Sagot :

Nessa1425go

Answer:

Between the 11th and 13th century "reading stones" were invented. These were primitive plano-convex lenses initially made by cutting a glass sphere in half. The medieval (11th or 12th century) rock crystal Visby lenses may or may not have been intended for use as burning glasses.

Chadrevaldogo

Answer:

i think it's A.

Explanation:

It is generally accepted that the origin of the lens can be traced back to the ancient Roman philosopher, Seneca, who described, “letters could be magnified by a ball of crystal” about 2000 years ago. The lens works using a principle known as light “refraction”: the light bends and changes its direction of travel.

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