Lesson
Lesson- 9.1.2- know the order of the electromagnetic spectrum in terms of decreasing wavelength and increasing frequency, including the colours of the visible spectrum.
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Lesson-9.1.1- know that light is part of a continuous electromagnetic spectrum that includes radio, microwave, infrared, visible, ultraviolet, x-ray and gamma ray radiations and that all these waves travel at the same speed in free space.PreviousLesson-9.1.3- explain some of the uses of electromagnetic radiations, including: ??? radio waves: broadcasting and communications ??? microwaves: cooking and satellite transmissions ??? infrared: heaters and night vision equipment.Next