Congress forcing a compromise(d) Space Shuttle design on NASA. Among other things, the space shuttle was the first human space vehicle to use solid rocket boosters. Solid rocket boosters were previously deemed unsafe for human space flight because once they're lit, they don't stop boosting until the fuel is gone. Liquid-fueled rockets can be shut off.
Definition of conductive. : having conductivity : relating to conduction (as of electricity)
Electrical conductivity is the reciprocal quantity of resistivity. Conductivity is a measure of how well a material conducts an electric current. Electric conductivity may be represented by the Greek letter Ï (sigma), Îº (kappa), or Î³ (gamma).his is a table of electrical resistivity and electrical conductivity of several materials. MatWeb Material Property Data. By Anne Marie Helmenstine, Ph.D. Electrical resistivity, represented by the Greek letter Ï (rho), is a measure of how strongly a material opposes the flow of electric current.