Chapter summary
|
Previous
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
Particle-like nature of EM radiation
|
Table of Contents |
Next
End of chapter exercises
|