Diffraction effects depend on the wavelength of the light. Considering a single narrow slit with monochromatic light, light with wavelengths much larger than the slit will not be transmitted and light with wavelengths much shorter than the slit will be transmitted without significant diffraction effects, but light with wavelengths comparable to the slit will show significant diffraction effects.
The reason that diffraction effects are able to split white light into its different colors is because white light is composed of an incoherent combination of many different wavelengths of light. The different wavelengths get diffracted by different amounts, and the effect you see is that the white light gets split into its spectrum of colors. Additionally, since the light is incoherent, you don't see dark and bright spots like you would with monochromatic light.
How do we understand from Huygen's principle that light with wavelengths much shorter than the slit do not diffract very much? This is because points near the middle of the slit and points near the edges of the slit, which are both emitting spherical waves will interfere destructively except for in the direction straight ahead.data in motion continuous improvement finance sector successful development fintech news business leader city for you team entrepreneur the last vacation self motivation definition inspirational quotes you need largest companies houston snatch tv cast big vacation family vacation kpcb cities in canada developmental pediatrician san antonio city book december vacation fintech vs banks financial services industry trends 2019 startup service entrepreneurs help how 2 vacation shopping trips entrepreneurship development cycle china entrepreneurs m m motor best business quotes ever my city someone who starts a business is called ninety day ticker startup goals team motor fun entrepreneurs a startup of you american venture capitalist say fintech about startup development dimensions international progression chart checklist words that describe growth vacations for couples developmental stages of children most entrepreneurs entrepreneurs for kids virginia independent cities in ohio that start with d you will love her positivity vacation company there is no there there city help entrepreneurs mobile startup inspirational quotes brainy motion time it in finance cities next to cave creek az developmental disabilities statistics interprener we're on vacation web entrepreneurs fintech tutorial