Falling force (weight) acts on a mass LessonLevel 2 (without higher mathematics)Physical Quantities and Their Units List of important physical quantities, their symbols, (derived) units and examples with images.
Nucleus and the Number of Protons and Neutrons LessonLevel 2 (without higher mathematics)The 12 Important Physical Constants Learn about important physical constants and what their formula symbols and SI units are.
Circularly Polarized Plane Wave (E-Field) LessonLevel 3 (with higher mathematics)Linearly and Circularly Polarized Electromagnetic Waves Here you will learn about polarized light, i.e. linearly or circularly polarized electromagnetic waves, and what characterizes them.
Double-slit Experiment - interference pattern on the screen LessonLevel 2 (without higher mathematics)Double-Slit Experiment with Light Young's double-slit experiment with light. You learn how the interference pattern of the double-slit is formed and which role light diffraction plays.