Simply by observing the existence of the Cherenkov radiation from a particle, one can determine its relative velocity with respect to the light speed in medium. Knowing that, one can determine the particle momentum.
It is a ring formed carbon skeleton. The smallest possible cyclic hydrocarbon is cyclopropane (triangular C3H6) together with cyclobutane both being rather unstable (degration to linear propene and 1-butene). Five and six membered rings are quite common.
1 Cycloalkanes are hydrocarbons containing one or more carbon rings to which hydrogen atoms are attached. 2  The general formula for a saturated hydrocarbon containing one ring is C n H 2n. 3  Aromatic hydrocarbons, also known as arenes, are hydrocarbons that have at least one aromatic ring. The general formula for saturated hydrocarbons is C n H 2n+2 (assuming non-cyclic structures). 2  Saturated hydrocarbons are the basis of petroleum fuels and are found as either linear or branched species.