Students and professors of the Department of Forestry at NTU discovered in experiments at Hsitou that if the lights are simply changed from white to a dusky yellow then there is a sharp decrease in the number of insects found dead within 20 meters of the lamps the next day.
台大森林系師生就在溪頭實驗發現，只要將白色日光燈改成暈黃色，翌日直徑廿公尺內死掉的昆蟲就少了很多。