Chapter summary
|
Previous
11.5 Particle-like nature of EM radiation
|
Next
End of chapter exercises
|
Chapter summary
-
Electromagnetic radiation has both a wave and a particle nature.
-
Electromagnetic waves travel at a speed of approximately \(\text{3} \times \text{10}^{\text{8}}\) \(\text{m·s$^{-1}$}\) in a vacuum.
-
The Electromagnetic spectrum consists of the following types of radiation: radio waves, microwaves, infrared, visible, ultraviolet, X-rays, gamma-rays.
-
Gamma-rays have the most energy and are the most penetrating, while radio waves have the lowest energy and are the least penetrating.
|
Physical Quantities |
||
|
Quantity |
Unit name |
Unit symbol |
|
Energy (E) |
joule |
J |
|
Wavelength (λ) |
metre |
m |
|
Period (T) |
second |
s |
|
Frequency (f) |
hertz |
Hz (\(\text{s$^{-1}$}\)) |
|
Speed of light (c) |
metre per second |
\(\text{m·s$^{-1}$}\) |
Table 11.3: Units used in electromagnetic radiation
|
Previous
11.5 Particle-like nature of EM radiation
|
Table of Contents |
Next
End of chapter exercises
|