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Across 6. When accommodation plays little or no role, we judge distance from this effect 9. This effect may explain why the moon looks bigger on the horizon 10. In Los Angeles or any big city, distance can be judged by this principle because of intervening smog 11. This creature has two-and-a-half times the voltage of an ERG, and over six times the wattage of the human body 14. Resistance in a live human cell, should be 5 kohms or less for electrodiagnostics 15. Software that plots voltage changes over time 16. A high-voltage version of this can electrocute you if you open up a TV set, even if it's unplugged 18. To trade current for voltage (or to turn a robot into an airplane), you need one of these 20. Uses Gaussian principles to generate an electric field with a flowing current 21. This visual illusion may be the basis of the corridor or hallway illusion

Down 1. Keeps your electrodiagnostic patients from getting a nasty shock 2. How small tiles look at the far end of a long hallway is an example of judging depth by this monocular cue 3. Can be used to lower your blood pressure and diminish migraine headaches without medicine 4. The "check valve" of electronics 5. This part of the near triad gives us a binocular depth cue 7. This visual illusion of lines that appear to be different lengths is probably explained by our experience with corners 8. The variable valve of electronics, on which microchips are based 12. Your brain can guess that the Grand Canyon is really deep by using this type of angle 13. Using the water works analogy, this electrical property is the equivalent to water flowing in a pipe 17. When we compare our own head motion with the motion of something closer to something farther away to determine distance, it is called this 19. Our assumption about light and shadows tells us that the usually come from this direction