The Wave Nature of Light, Wavelength, and Colour (Leaving Cert Physics): Flashcards

Ray model and wave model

Light spreads out in curved wave patterns when passing through an aperture similar in size to its wavelength

Thomas Young (1801, double-slit experiment)

Light of single wavelength

Constructive interference (waves arrive in phase)

Destructive interference (waves arrive out of phase)

Sources maintaining constant phase relationship

$n\lambda$ where $n$ = whole number

400 nm to 700 nm

~400 nm, violet

~700 nm, red

Mixture of all visible wavelengths

Thin film interference from light reflecting off both surfaces