When you watch tennis, or any other sport, you're watching a demonstration of physics, just with more cheering than the typical physics experiment. Central to the action are the three laws of motion described in 1687 by Sir Isaac Newton, the Grand Slam champ of pre-industrial science.

If you are looking to add a bit of friendly sabotage to your tennis opponent’s game, consider popping a few of his tennis balls in the freezer beforehand. When a tennis ball’s temperature changes, the ball’s gas-filled core undergoes an interesting reaction.

Designed to complement a player’s strengths, a tennis racket can increase performance when selected for its characteristics that highlight power, control and comfort. The best tennis rackets allow a natural forehand swing, with a loose relaxed arm.

Over the years, the numbers on tennis balls have caused much speculation about their intended purpose.

From the pressurized rubber core to the felt covering, man-made materials make up most parts of a tennis ball. In some cases, recycled PET plastics are used to make the felt that covers tennis balls.

Understanding the general rules and regulations of tennis is a first step to enjoying a sport you can play all year-round, with minimal equipment and just one other person. While there are slight rules variations between amateur and professional tennis, the object of the game is the same at all levels.

While playing tennis requires patience, physical strength and endurance, it also requires a key piece of equipment: the tennis racket. Early tennis rackets were made of wood. Over time, tennis racket technology has radically changed.

Tennis fashion has changed dramatically since the early 20th century, when trousers, cotton shirts and full-length dresses were the norm. Now, players can choose from a variety of technologically advanced clothing to help manage weather conditions.

Your style of play, how you hit your forehand and backhand or the type of racket you use can all be reasons you experience pain in your forearm and wrist after you play tennis.

Buying a tennis racket for your child can be a little tricky because manufacturers make junior rackets in five different sizes. One that's too big or too small can hamper your child's learning experience.

Air travel rules can be a chore to deal with, particularly when you want to bring sports equipment along. While tennis rackets are not typically identified as lethal weapons, they can cause difficulties when traveling by air.

If you think the sport of tennis is the only game that uses a tennis ball, think again. Many entertaining games exist that also use one of these fuzzy, yellow balls.