I was reading up on black holes when i thought of this. Black holes have been found to emit radio waves. I was wondering if this was actually light that managed to escape the black hole. Here is my thinking on this. From what i know light travels in a straight line through points through space. A BH distorts space time which causes light to travel straight on the path into the BH. If light is expelled at 90 degree angle to the surface of the BH it should travel at lightspeed away from the BH. I was thinking then that the light wave's wavelength would be stretched into becoming a radio wave. If this is true we should be able to "read" the output. Comments?