Electromagnetic spectrum light waves

CONTINUUM THERMAL RADIATION Radiation which involves the transfer of heat by electromagnetic waves, confined to the relatively narrow window of the electromagnetic spectrum (i.e. visible light around 400 nm to infrared light around 1000 nm). The hot particles in and above hrework flames contribute to this type of radiation. 

Frequencies in the electromagnetic spectrum can be seen from Figure 9-7 generally to be large. As a result, it is common to use wave numbers instead of Hz or MHz (megahertz). The frequency in wave number is simply the frequency v in Hz divided by c, the velocity of light in cm. Wave-number units are cm-1 and we can think of the wave number v as being the number of wave crests per centimeter. 

Although they appear quite different to our senses, visible light, infrared radiation, microwaves, radio waves, X rays, and other forms of radiant energy are all different kinds of electromagnetic radiation. Collectively, they make up the electromagnetic spectrum, shown in Figure 5.3. 

Speed is defined as distance traveled in a period of time. All waves in the electromagnetic spectrum travel in a vacuum at the same speed, the speed of light. What is this speed ... 

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