6. (foll by: to) related (to) or dependent (on). 7. (when: postpositive, often foll by to) having a subsidiary or minor relationship (with). 8. (General Physics) (esp of a beam of light or particles) arriving at or striking a surface: incident electrons.
Answers (1) hill. Personally, if you use salt water properly, it won't cause any damages to your sunglasses. But if you rinse your sunglasses in salt water for a long time, it may cause some damages to the lens coating of your sunglasses. Anyway, you needn't rinse your sunglasses in salt water.
Why does water fill the bottom of the glass rather than cling to the sides? Attractive forces hold the water molecules together as a liquid and gravity holds the water molecules at the bottom of the glass. Why do beads of water often form on a slippery surface, such as a freshly waxed car?