Light and Emission Spectrum
Max Planck had proposed around the turn of the 20th century that all electromagnetic energy must be quantized. What this means is that each frequency of electromagnetic radiation had to have a corresponding energy. It was later suggested that the quantized energy was due to photons.
Electromagnetic radiation travels in waves. The wavelength is defined as the distance between two adjacent troughs of the wave. The frequency is defined as how many troughs of a wave pass a given point per second. So as you can imagine, as the wavelength gets smaller, there will be more troughs that will pass a given point per second, as shown in the diagram above. As the radiation passes a given point more frequently, the magnitude of the electromagnetic radiaiton increases.
