YDS CÜMLE ATMA / TEST 5 15. Soru

15.

(I)The early telescopes used lenses,
familiar at the time from lenses in
spectacles, to gather light and focus it. (II)
Later in the 17th century, scientists
realized that curved mirrors could also
gather and focus light. (III)Since the light
did not need to pass through the mirror,
mirrors proved to be more efficient than
lenses for large telescopes. (IV)
Consequently, in 1668. Isaac Newton built
the first telescope lo use mirror to collect
light, rather than lens. (V)But it is through
satellites and probes rather than
telescopes that our knowledge of space
has increased.