Waymo CEO Dmitri Dolgov explains the benefits of lidar, radar, and cameras for self driving: "They're very complementary." "The frequencies are very different. Laser gives you very high resolution. Think of it as a laser beam that goes out, spins around, and shoots out millions of these laser pulses per second. Then each one comes back and you can sample the 3D structure of the world with very high resolution." "Radar has much lower resolution, but because of the physics of it, it degrades…