Dutch translation: minder strooilicht en verblindend licht
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een verminderde uitvloeiing en weerkaatsing van het licht
Explanation: Hier vast de referentie...
ik denk nog even na over de vertaling
What is Spill Light?
Spill light is any light where it is unintended and unwanted. It may come from an athletic field, a nearby streetlight, or a security light from a nearby shop. Spill light is measurable. Oftentimes, it only measures one footcandle or less (a full moon creates about 1/2 footcandle). Yet, spill light can change the characteristic of a neighborhood.
A large percentage of all the fixtures used to light an athletic field have no ability to control spill light. The light that is projected into a field is also thrown off the field and above the field. The drawing above shows the effect of such inefficiency. A large portion of the light shines directly into neighboring homes. Such inefficiency also produces side effects in addition to spill light. With so much wasted light energy, more fixtures are required to light a field, more electricity is required to operate the lights, and more money must be budgeted to maintain the additional lights.
What is Glare Light?
Glare is simply a point of incredibly bright light. Glare is experienced everyday when driving into sun or by seeing the sun's reflection off a car window or bumper. How is it minimized? By turning your head, wearing sunglasses, or lowering the visor in your car.
For athletic field lighting, glare comes from the arc tube inside a metal halide lamp. The arc tube is like a miniature sun. Viewing it directly or seeing a concentrated reflection causes discomfort. Even homes a half mile away can be adversely affected by its glare. On the field, this glare can cause players to lose the ball and commit costly errors that can lose the game or lead to injury. Spectators must also contend with glare; it's difficult to discern the fine details of the game.
Control of glare is more than just an environmental issue; it also becomes one of performance and safety.