Laser Beam in a Football Game

These days we often hear the news about the controversy over the laser beam in football. The use of lasers is usually carried out by supporters of the opposing team, usually a laser is aimed to break the concentration of the highlighted players with the laser, so that players who highlighted not focus on the game. Usually players who become the target of this laser is a player who plays as a goalkeeper, is intended for the goalkeeper did not concentrate on the ball, so that the goalkeeper would be wrong to anticipate the arrival of the ball.

 The color laser beams are often used is green, because the green laser is more distracting than the red laser. Excess green laser compare than red laser is the wavelength. Generally red laser use wavelength of 635 nm (ruby red) or 650 nm (pink), while the green laser uses a wavelength of 495-532 nm.

In the wavelength range, yellow and green color most easily seen by the human eye. When shone directly into the eye, green laser can appear 50 times brighter than the red laser. Wavelength also affects the strength of the laser beam, with a shorter wavelength, green laser has a higher intensity so that it can reach longer distances.

With these advantages, green lasers are widely used by the military for combat operations during the day. Green spots can reach longer distances, as well as more clearly visible even in bright light conditions.

While green and red lasers used in toys as well as pointers for presentations generally use the power of less than 5 milli watts. With such a small power, the laser will only damage if fired directly into the eye in the long term. But if you use power above 1 Watt, power green laser can reach 1,000 times the strength of solar radiation. The power green laser is capable of burning at the power of certain objects such as plastic and paper if fired from close range.

One of the media have asserted that the laser beam in a football match is not harmful to health but in fact the most powerful green lasers create a disturbing concentration. When a person is exposed to laser body will not feel any pain and the eye can still see. But the effect, the brain concentration will be disrupted because of the color laser can make people uncomfortable.

Here are some examples of cases the use of lasers and sanctions authorities:

1. In 2010 World Cup match between Argentina vs. Nigeria at Ellis Park, Johannesburg, June 2010. A number of players including Lionel Messi of Argentina shot a laser beam to the face. Green laser beam at the blinding was also directed to the squad, Diego Maradona. At that time FIFA stadium immediately asked the security forces intervened because there are spectators who fired a laser beam toward the player.

2. Champions League match between Lyon against Manchester United in February 2008. It was a green laser beam shot Cristiano Ronaldo's face. Due to the hands of ignorant act of Lyon's supporters, European Football Associations (UEFA) imposed a fine of approximately USD 46 million to Lyon on March 20, 2008 after the MU discuss the case.

3. Real Madrid's match against Murcia at the King's Cup on October 28, 2010. Ronaldo back into target shooting green laser beam while executing a free kick. Knowing the incident, the committee immediately seek and pursue the perpetrators. But the perpetrators managed to escape.

4. Uzbekistan Football Federation was fined AFC approximately USD 9 million after supporters club of the country, Bunyodkor, firing a laser beam to the club goalkeeper of Korea, Pohang Steelers, Asian Champions League on 23 September 2009.