Physics: Age 18

7 illustrated Physics lessons for Age 18.

Light fringes from two slits When one colour of light passes through two very narrow, close slits, the two waves spread out and overlap. On…
How Planets Orbit the Sun A planet traces an ellipse with the Sun sitting at one focus, not at the centre. As it travels, it sweeps out …
Kepler's Laws of Orbits Planets travel around the Sun along ellipses, with the Sun at one focus. A planet sweeps out equal areas in eq…
Planet Orbit Around a Star A planet moves around a star on an oval path, with the star at one focus. Shaded wedges show equal areas swept…
Two slits make light bands Green laser light passes through two narrow slits and lands on a screen as alternating bright and dark vertica…
Lightning in a Storm Cloud Inside a towering storm cloud, colliding ice crystals and raindrops separate electric charge. A bright electri…
Electromagnetic Spectrum The electromagnetic spectrum orders waves by wavelength, from long radio waves to short gamma rays. All these …