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.
In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon. Hydrocarbons from which one hydrogen atom has been removed are functional groups, called hydrocarbyls. They are composed entirely of single bonds and are saturated with hydrogen. 2  The general formula for saturated hydrocarbons is C n H 2n+2 (assuming non-cyclic structures). 3  Saturated hydrocarbons are the basis of petroleum fuels and are found as either linear or branched species.