Wimbledon

• What invention made the new tennis game possible?
• What did Charles Goodyear invent? What did this invention mean for tennis?
• When was the rubber was first vulcanized?
• What could the new tennis balls do?
• What were the lawn rollers needed for?
• Have the rackets changed? How?
• What materials were historically used for produsing the rackets?
• What were the most fundamental changes in?
• What other changes are being planned?