Modern physics and wave optics from the Class 12 syllabus and first-year engineering physics: the photoelectric effect, de Broglie wavelength, Young's double slit and diffraction, together with a reference page of unit conversions and SI prefixes.
5 reference pages
Common unit conversions for physics and chemistry: length, mass, time, energy, and SI prefixes.
The path-difference conditions for bright and dark fringes, the fringe width formula, and worked examples finding fringe width and fringe position.
Why single-slit diffraction minima and double-slit interference maxima use the exact same-looking formula for opposite reasons, plus a worked diffraction grating example.
Einstein's photoelectric equation, the work function and threshold frequency, and a worked example finding the maximum kinetic energy of emitted electrons.
The de Broglie relation between a particle's momentum and its wavelength, and a worked example deriving the wavelength of an electron accelerated through a known voltage.