Fluorescence occurs when a high energy photon pumps a molecule up to an excited energy level. The molecule then decays to a level partway down by emitting another photon. Suppose we pump up a molecule with the three energy levels indicated from level E0 to level E2 using a 395 nm photon. The intermediate level, E1, has an energy 0.7 eV about the ground state, E0. What is the wavelength of the fluorescent photon emitted when the molecule decays from level E2 to level E0

Why is metal often used for cooking pan?

Astudent is working in the lab to determine how time affect impulse the student keeps the force the same in each row but changes impact the time some data is shown witch trial has the greatest a student is working in the lab to determine how time affect impulse the student keeps the fours the same in each row but change is the impact time some data shown witch trial has the greatest impulse

Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i.e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i.e. include the distance traveled to the first encounter)