yeah but we didnt have cable running everywhere we wanted electricity originaly. The real reason is that 1) you still get pressure drop allong a pipe with fluid flowing through it, caused by friction with the wall
http://www.engineersedge.com/fluid_flow/pressure_drop/pressure_drop.htm"
and...
what is most likely is that the plane is maintaining a constand speed and one would presume that as the bombs are dropped and so no longer benifit from the engine which is requireered to overcome primarily air resistence and keep the plane at a constant speed, the bombs would be expected to...
OK, so i think i get why refraction happens and it makes sense that as the light passes into something of a higher refractive index it will decelerate and if it hits at an angle, one "edge" of the beam will hit first and thus descelerate before the other side of the beam causing the beam to...