Lesson
Lesson-11.1.2- State that all electromagnetic waves travel with the same high speed in a vacuum.
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Lesson-11.1.3- Describe typical properties and uses of radiations in all the different regions of the electromagnetic spectrum including: ??? radio and television communications (radio waves) ??? satellite television and telephones (microwaves).PreviousLesson-11.1.1- Describe the main features of the electromagnetic spectrum in order of wavelength.Next