'These caused a blurring of the image, so Newton replaced one of them with a curved mirror'
a telescope lens
DANGER, CURVES AHEAD: These caused a blurring of the image, so Newton replaced one of them with a curved mirror
These caused a blurring of the image, so Newton replaced one of them with a curved mirror
These caused a blurring of the image, so Newton replaced one of them with a curved mirror
DANGER, CURVES AHEAD
a telescope lens
DANGER, CURVES AHEAD