The total amount of light that illuminates surface is known as lux. These are described as units of brightness. If a light-emitting device is closer to a surface, the higher the lux will be. This brightness exists on a sliding scale. For example, if you could imagine a dark room and a single light hovering over a table, the light being emitted o...

There is no doubt that New Zealand's ageing building infrastructure is beginning to cause a number of problems. Everything from asbestos to maintenance can begin as a small problem but exponentially grow into something much larger. However, one issue that has expanded in recent years is gas leaks. With appliances and building structures getting ...