Metadata
Author: Samanantar
Data
Bangla[bn]
নীচের উদাহরণগুলো বিবেচনা করার সময় নিজেকে জিজ্ঞেস করুন, ‘ এই নকশাগুলোর জন্য আসলে কে কৃতিত্ব পাওয়ার যোগ্য? ’
English[en]
As you consider the following examples, ask yourself, Who really deserves the credit for these designs? Learning From a Whales Flippers What can aircraft designers learn from the humpback whale? A great deal it seems. An adult humpback weighs about 30 tons as much as a loaded truck and it has a relatively stiff body with large winglike flippers.