Profile Topics Started Replies Created Engagements Favorites Search topics: Topics Engaged InViewing topic 1 (of 1 total)TopicVoicesPostsLast Post How many photons are contained in a flash of green light (525 nm) that contains 189 kJ of energy? Started by: Sai Teja in: Physics12 2 years, 9 months ago elon musk Viewing topic 1 (of 1 total)