Show ELECTROMAGNETIC SPECTRUMIntroduction We have seen that waves can be categorized either electromagnetic or mechanical in nature. Electromagnetic waves are waves resulting from the interaction of oscillating electric and magnetic fields. They include visible light, radio waves, x-rays, infra red, ultraviolet, microwaves and gamma radiations. When these waves are arranged in a certain pattern e.g in the order of increasing frequency or wavelength then we get an
electromagnetic spectrum. 28.2: The electromagnetic spectrum Increasing frequency f(Hz) 103 108 1010 10141015 1022 R M IR V UV X G λ(m) 105 100 10-3 10-6 10-8 10-10- 10-11 10-13 Decreasing
wavelength Where R- Radio waves M- Microwaves IR- Infra red V- Visible light UV- Ultraviolet X- X-rays G- Gamma radiation [Hint: Roast(R) maize (M) is (IR) a very (V) unusual (UV) x-mass(X) gift (G)]. 28.3: Properties of electromagnetic waves The following properties are common to all electromagnetic waves:
28.4: Production, detection and applications of electromagnetic radiations The table below summarizes the production, detection and applications of the various electromagnetic radiations:
28.5: Dangers of electromagnetic waves
Example 28.1
c=fλ 3.0x108m/s= 1.0x108xλ λ=3.0m
c=fλ 3.0x108m/s=fx1.0x10-11m f=3.0x1019Hz
E=hf=6.63x10-34Js x3.0x1019Hz =1.989x10-14J.
X-rays, UV light, blue light, infra red and radio waves. Peda.net käyttää vain välttämättömiä evästeitä istunnon ylläpitämiseen ja anonyymiin tekniseen tilastointiin. Peda.net ei koskaan käytä evästeitä markkinointiin tai kerää yksilöityjä tilastoja. Lisää tietoa evästeistä What is the correct order of increasing frequency?The electromagnetic spectrum is a continuum of all electromagnetic waves arranged according to frequency and wavelength. As shown in the image the order of increasing frequency is : Radio waves, Visible light, X-rays and Gamma rays.
What are the 7 types of electromagnetic waves in order of increasing frequency?The seven electromagnetic waves in increasing order of frequency and decreasing order of wavelength are:. Radio waves.. Microwaves.. Infrared radiation.. Visible light. 5 × 10 - 6 m t o 0 . 8 × 10 - 6 m.. Ultraviolet radiation.. X-rays.. Gamma rays.. What is the increasing order of electromagnetic radiation?In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.
What is the order from lowest to highest frequency?The entire electromagnetic spectrum, from the lowest to the highest frequency (longest to shortest wavelength), includes all radio waves (e.g., commercial radio and television, microwaves, radar), infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.
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