We all know Newtons law. An object in motion will stay in motion on straight path unless acted on by another force. Light travels straight,X-rays travel straight,Gamma Rays travels straight but electricity doesn't travel straight. ELectrons which are relate to the radiowave part of the spectrum I guessdoesn't travel straight in Earth's atmosphere. I don't know if it travels straight space or a vacum but never have I seen it do it here. What I wanna know is why doesn't lightning or static electricity travel straight. Is it cause there are minor electric fields acting on it or because air is an insulator? Cathode rays which are electrons I believe travel straight in our TVs. And the solar wind moves,I'm not sure if it's straight though. Unless we can get charged particles to move straight we have to use Neutrons in our ray guns.