The present invention is directed to recombinant spider silk proteins, nucleic acids, coding for these recombinant spider silk proteins, as well as hosts suitable for expressing those nucleic acids. In the golf ball having a plurality of dimples and land parts surrounded by the plurality of dimples, the land part has a shape having at least one vertex, the land part is connected to at least two adjacent land parts substantially by a point, and the area of the land part is in the range of about 0. The female connector is further defined into two categories: snap-in mounting for enclosed, confined space cabinets and threaded panel mounting for universal attachment. The gatherers are adapted for filtering and aggregating the network communications usage information. Also, there are provided a light irradiation apparatus for spectrometry and a spectrometer.