| 41. | What has all this got to do with electromagnetic waves?
|
| 42. | As with electromagnetic waves, sonic waves can exhibit negative refraction.
|
| 43. | However, electromagnetic waves cannot be directly perceived by human ears.
|
| 44. | Electromagnetic waves are what carry energy from place to place.
|
| 45. | This diffraction and polarization process disrupts the electromagnetic waves.
|
| 46. | The device emits an invisible electromagnetic wave beam that travels at the speed of light.
|
| 47. | The same principle would apply to a street search by electromagnetic wave imaging, he said.
|
| 48. | Electromagnetic waves of high frequency are absorbed by water.
|
| 49. | :Did you mean Speed of electricity or electromagnetic wave?
|
| 50. | Some of the tall buildings also interfere with electromagnetic waves used in navigation, he said.
|
