De Broglie Equation Clarification

$\lambda=\frac{h}{p}$

Amina Durrani 3G
Posts: 52
Joined: Sat Jul 20, 2019 12:16 am

De Broglie Equation Clarification

I know that the De Broglie Equation states that any moving particle with momentum, p, has wavelike properties with wavelength, lambda, but what exactly are the wavelike properties?

Michelle Shin 4B
Posts: 50
Joined: Thu Jul 25, 2019 12:17 am

Re: De Broglie Equation Clarification

The wavelike properties are the diffraction patterns: constructive (waves in phase) and destructive interference (waves out of phase).

Sjeffrey_1C
Posts: 108
Joined: Wed Feb 20, 2019 12:17 am

Re: De Broglie Equation Clarification

To add on, the concepts mentioned above are that in constructive interference, the amplitudes of the two waves summate (add together). In destructive interference, the amplitude's of the two waves cancel each other out.

Frederick Keith_4C
Posts: 65
Joined: Thu Sep 26, 2019 12:19 am

Re: De Broglie Equation Clarification

The properties of light being explained as a wave was shown in Young's double slit experiment. In the experiment, a beam of light was split into two beams through two slits and then recombined, and interference effects were displayed. If light was simply a classical particle then the expected pattern would just be the sum of the two slit patterns. But instead, what actually happens is we get an alternating series of light and dark bands, which is explained by the concepts of constructive and destructive interference, as explained by the posts above me. The distribution of brightness is explained by the additive and subtractive interference patterns of waves. This is what is meant by "wavelike properties."

Angela Patel 2J
Posts: 110
Joined: Sat Aug 24, 2019 12:17 am

Re: De Broglie Equation Clarification

I think by wavelike properties it also means that there is a quantifiable wavelength and frequency. Like how we discussed in class that all objects theoretically have wavelike properties, but only we can only measure it for small objects.