There are over 300 different species of irises. Here are ten of the most popular types of iris, and some of their ...

Perhaps the only downside to growing irises is that they only bloom for a few weeks, but by planting a variety of bearded, ...

There are two types of adjustability: fixed focal length and variable focal length. A video camera’s focal ratio or F-number describes the aperture of the lens as controlled by the iris. F-numbers ...

The IAEA Integrated Review of Infrastructure for Safety (IRIS) methodology and software tool supports the development of safety infrastructure for nuclear power programmes through self-assessment. The ...