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Two towers on top of two hills are 40 km apart. The line joiningthem passes 50 m above a hill halfway between the towers. What isthe longest wavelength of radio waves, which can be sent betweenthe towers without appreciable diffraction effects? |
| Answer» Two towers on top of two hills are 40 km apart. The line joiningthem passes 50 m above a hill halfway between the towers. What isthe longest wavelength of radio waves, which can be sent betweenthe towers without appreciable diffraction effects? | |