Photoelectric Effect Calendar 2025

This calendar is dedicated to the photoelectric effect*, which was explained in 1905 by Albert Einstein based on Max Planck's hypothesis about the quantum nature of light.

There are four main periods of the year: low energy, solar activity, peak energy, and trough energy. Depending on the strength of the sun, a different number of photons reach the earth, which directly affects the strength of the photoelectric effect. Each season represents a phase of the photoelectric effect in the annual cycle.

*The photoelectric effect is the interaction of light or any other electromagnetic radiation with matter, in which the energy of the photons is transferred to the electrons of the matter.

Depending on the strength of the sun's activity and the number of photons reaching the surface at any given time of year, the black balance in the graphic changes
against the background, which envelops the bare metal sheet, altering the interaction area of ​​electromagnetic radiation with the surface.