2DAge 10+10 min
A lens gathers light into a focus
A parallel beam of rays passes through a converging lens and meets at one point — the focus. Then try a diverging lens.
Interactive experiments for kids, students and teachers. Run each one right on the page, then open a copy in the Tymora editor and change mass, friction, elasticity or gravity. Every experiment comes with discussion questions and a version to try at home.
A parallel beam of rays passes through a converging lens and meets at one point — the focus. Then try a diverging lens.
A ray enters a glass block and a prism, changes direction and leaves. The angle of refraction obeys Snell’s law.
Three eye models: normal, short-sighted and short-sighted with glasses. Rays meet on the retina only in the normal eye and in the eye with a diverging lens.