Consider perfectly smooth glass plates shaped and oriented in the following ways (note that the plate spacings and fringe separations are greatly exaggerated). For each case, consider the interference pattern you would observe if the plates were illuminated from above with a sodium lamp. The top row is an example.

The correct answer is  interference

Explanation: The superposition, also called interference in some cases, is the phenomenon that occurs when two or more waves meet, generating a resulting wave equal to the algebraic sum of the disturbances of each wave.

muslims have taken his goods and products to different parts of asia an indonesia. sometimes just traveled and trade, but in other occasions, stayed in the place and made a living.

trade was the key for muslims economies to prosper. their commerce routes reached far places like malaysia and java in the 11th century.

another important factor for prosperity was that muslim states served as the middle point for european traders.

they used to travel by land but sailing the seas -the indian ocean- really increase the exportation of products.