4. An electron moving to the right at 0.9c collides with a positron moving to the left with a velocity of 0.9c. The two
Posted: Sun Apr 10, 2022 6:30 pm
4. An electron moving to the right at 0.9c collides with a positron moving to the left with a velocity of 0.9c. The two particles annihilate and produce two gamma-ray photons. What is the wavelength of the photons?