Ce este indicele de refracție al unei lentile?

Difracţia luminii. Franje în reţele de difracţie. | Lectii-Virtuale.ro

70K views · 1.1K reactions | 3D x-ray  | C.H.D | Facebook

312K views · 4.2K reactions | When it comes to routine X-rays, Pedro our sea lion is more than happy to hold still for our vets. Training Pedro to willingly participate in vet check ups helps reduce unnecessary stress for him. Meet Pedro and his pinniped friends at the Splash Safari show, happening daily 10:30am and 5pm. : Ravan Tan, Assistant Manager | Mandai Wildlife Reserve | Facebook

21K views · 1.1K reactions | Eric Kripke ain’t mincing words when he talks about @karlurbanofficial’s performance on #TheBoysTV. Watch the whole commentary on Amazon Prime Video’s X-Ray feature: just pause the Season 1 finale and click on “X-Ray” or “View All.” Easy peasy, Bob’s your uncle. | The Boys | Facebook