User:Suki0701/sandbox

The situation of light pollution
The problem of light pollution in Hong Kong is alarming. According to a survey conducted by the Department of Physics at the University of Hong Kong, the level of light pollution in Tsim Sha Tsui is 1200 times brighter than a normal dark sky which is the worst reading in the world. Apart from that, a survey by four students from Worcester Polytechnic Institute in Massachusetts discovered that the light of the neon signs from buildings in Causeway Bay was 176 lux bright and Mong Kok was about 150 to 500 lux which was far higher than British agencies recommend.

The effect on the neighborhood
In some areas of heavily mixed residential developments like Mongkok and Shum Shui Po,some residents have trouble sleeping as they have to bear the strong neon light emitted by the precincts that lit up like football stadiums through their bedroom windows.

The effect on human beings
Excessive amount of light can disrupt the biological clock of human and affect their brain and hormone function.

The effect on biological environment
In the remote Sai Kung countryside, the brightness emitted from the giant LED billboards will affect the breeding of firefly, a kind of insects relying on light signals to mate, as they will emit the signal less frequently, according to the Hong Kong Entomological Society chairman Yiu Vor. Furthermore, it will affect their continuing survival..