As kids, like many of us, we were awed by the concept of submarine – something that can travel under the water. And we were under the impression that submarines are a 20th century invention. Yes, the modern submarines were made in later half of 20th century. But efforts to travel under water have been made as early as 325 BC. (A 16th-century Islamic painting depicting Alexander the Great being lowered in a glass submersible. From Wikipedia) Museums have the ability pull us back into the past. The displays recreate history and invoke awe and wonder. Two back-to-back museum visits…