Badminton is a racket game played by two players (singles) or four players (doubles). A shuttle, generally made of cork and feathers, is hit over a high net that divides a marked court. The object of the game is to hit the shuttle to the floor on the opponent’s side of the net. The game derives from the ancient “battledore and shuttlecock.”

The game may be played out of doors, but it is best played indoors in a draft-free environment.
The floor of the court should have a non-slip surface, and is preferably made of wood.

Markings should preferably be in white or yellow. The lines should be 40mm wide. They are included within the overall dimensions of the court.

Wall from base line, 2.3m;
wall from side-line, 2.2m.
Lesser distances are used for club and recreational play.
The minimum space recommended is:
Wall from base line, 1.5m;
Wall from side-line, 1.2m.

Any system must not move the air.

The net is made of cord with a mesh size of 15-20mm. It is tightly stretched so that its upper edge is flush with the top of the posts.

The posts are firm and placed on the outside boundary lines and should be rigid enough to support the net under tension.
If the net is fixed by supports outside the court area, a thin post or strip of material should be fixed to the boundary line and rise vertically to the upper edge of the net.

The racket is light and usually made of metal or carbon fibre. The weight is usually 85-140g.

The shuttle is generally made of 16 feathers fixed in a cork base, but a combination of natural and synthetic materials or an all synthetic material are used in shuttles in other than top class play.
The weight is 4.74-5.50g, which determines the speed.

http://www.badminton.org.nz