The biggest difficulty encountered in night observation is insufficient candlepower and poor contrast. Before night-sight technology appeared or when the technology wasn’t developed, it had been difficult to watch the target and therefore the environment in the dark with human eyes alone.

今年，馬里蘭大學食品科學與營養系在國際期刊《Annual Review of Food Science and Technology》上發表了一篇題為《Advances in Using Nanotechnology Structuring Approaches for Improving food packaging》的綜述論文。