Wheel

A wheel is a circular [গোল] object which can rotate [আবর্তন] around its axis [অক্ষ] and help easy movement of things across a surface. Although it is a very important invention [আবিষ্কার], the history of its origin is unknown. Experts guess that the first wheel was developed from a circular object. The early man observed that a huge [বিশাল] piece of stone could be rolled [ঘূর্ণিত] easily if it was circular in shape. Thus, early man took advantage of rolling objects and developed the first wheel. Apart from its mechanical [যান্ত্রিক] advantage [সুবিধা], a wheel’s mobility [গতিশীলতা] has contributed [অবদান] much to the civilisation [সভ্যতা]. The wheels are, in fact, everywhere. They are on our cars, trains, planes, wagons and so on. Besides, they are on most factory and farm equipment. Fans, propellers, turbines are also other types of wheels. So, the wheel is very important. They have brought great civilization to the world through this invention. Today we cannot imagine modern life without wheels.