Questions with the keyword 'optics'

• How can short sighted people see short objects but not long. Surely they wouldn’t be able to see either by anon-270570 Comments: (No comments so far )
• a double rainbow i saw a couple months ago. what causes a double rainbow opposed to a normal rainbow by anon-267552 Comments: (No comments so far )
• how are rainbows made? by anon-267545 and 1 other. Comments: (No comments so far )