افتح حساباً مجانياً لبدء المنهج كاملاً والدروس التفاعلية — يعمل Google أو رقم الهاتف المحمول.
Standard model building blocks — quarks, leptons, antimatter, and hadron classification.
Einstein's equation hf = φ + KE_max and stopping potential.
Every particle has a wavelength λ = h/p.
Quantized energy E = hf to resolve the UV catastrophe.
Wavelength shift confirming photon momentum.
X-ray production, continuous + characteristic spectra.