#### Related to [[Light]] and [[Photon]] and [[Electrons]] --- ## Definition - Electromagnetic radiation is defined as waves of the electromagnetic field which propagate through space carrying momentum and thus **energy.** --- ## Relationship to light - Both [[Electrons]] and [[Photon]]s can create an electromagnetic *field* when they move. - Electromagnetic radiation is a form of **energy**. - Electromagnetic radiation **is also known as [[Light]] often of different wavelengths**! --- ## What it looks like > [!quote] > ##### Diagram of electromagnetic waves > ![[Electromagnetic radiation 2.png]] > > **E is energy and H is the magnetic field.** --- ## Properties - Since electromagnetic radiation is carried in the form of a wave it follows all of the basic rules about waves. - The **greater** the *frequency* the **shorter** the *wavelength* and vice versa. - The greater the *frequency* the greater the *energy.* - **Nodes** describe the non-moving points on the wave *where E and H intersect.* - Interference of two waves results in the **Sum** of them both. > [!quote] > ##### Graph of intensity over wavelength > > ![[Electromagnetic radiation 3.png]] > > **Equation relating frequency and wavelength** > > ![[freqandwave2.png]] --- ## Equations > [!quote] > ##### De-Broglie's equation > - The following equations are known as **de Broglie's equations**. In these equations *v* represents **velocity** and *p* represents **momentum**. > - The difference between momentum and velocity is that **momentum is a measure of the amount of motion in an object, and velocity is a measure of an object's speed with direction** > <br> > > ![[Pasted image 20230120114507.png]] --- #mainpage