Ray Optics Tabletop Kit: explore how lenses work with this inexpensive experimentation kit featuring three parallel laser beams and 2-D versions of lenses and other shapes that use refraction to alter the direction of light. Here a doubly concave lens interacts with the beams from a doubly convex lens. ➡️ Follow the link in my profile for info on where to get this very affordable demo kit and other amazing items featured here on @physicsfun #optics #lens #convexlens #internalreflection #refracti

I Finally Learned How Laser Shows Actually Work #science #laser #physics | vt.physics

297K views · 3.9K reactions | Laser physics is one of my favorite topics to teach in A Level Physics. A laser works by exciting electrons in atoms to higher energy levels. As they relax and de-excite, they emit photons, which causes lasing. #physics #science #laser | vt.physics | Facebook