physics Laser: why population inversion is impossible in 2-state gain medium I reviewed some basic laser physics from a class. Laser requires a gain medium with state > 2. Here's a quick analysis behind why. Following Einstein's conventions, 3 things can
life Time and Aging : proportionality Time As the last semester of college goes on, I feel a blend of various emotions such as joy, accomplishment, excitement, fear, nostalgia, etc.—all while trying to bring clean
