All observed elementary particles are either fermions or bosons. The observed elementary bosons are all gauge bosons: photons, W and Z bosons, gluons, and the Higgs boson. 1  Photons are the force carriers of the electromagnetic field.2  W and Z bosons are the force carriers which mediate the weak force.he observed elementary bosons are all gauge bosons: photons, W and Z bosons, gluons, and the Higgs boson. 1  Photons are the force carriers of the electromagnetic field. 2  W and Z bosons are the force carriers which mediate the weak force.
Elk Mound is a village in Dunn County, Wisconsin, United States. The population was 878 at the 2010 census. The village is surrounded by the Town of Elk Mound.
Elkhorn is a city in Walworth County, Wisconsin, United States. It is southwest of Milwaukee and northwest of Chicago. The population was 7,305 at the 2000 census. It is the county seat of Walworth County. Elkhorn was listed in Norman Crampton's 1995 edition The 100 Best Small Towns In America and it came in at number 14.[citation needed] Elkhorn is located at 42Â°40â²22â³N 88Â°32â²25â³W / 42.67278Â°N 88.54028Â°W / 42.67278; -88.54028 (42.672900, -88.540342). According to the United States Census Bureau, the city has a total area of 7.3 square miles (19.0 kmÂ²), of which 7.3 square miles (18.8 kmÂ²) is land and 0.1 square miles (0.1 kmÂ²) is water.