Wave Properties of Electrons Module q. 14


Moderators: Chem_Mod, Chem_Admin

305086803
Posts: 99
Joined: Wed Sep 18, 2019 12:16 am

Wave Properties of Electrons Module q. 14

Postby 305086803 » Sat Oct 19, 2019 12:53 am

Hi everybody!

I have a question regarding question 14. on the wave properties of electrons modules which is: When the trough of one wave interacts with the trough of another wave is their interaction constructive or destructive?

The module says the answer is constructive, but I thought that when a trough interacts without another trough of a wave, they cancel out and leads to smaller amplitude/light, and by definition from the textbook, is a destructive interference. Can someone explain why its constructive?

Thanks

KeyaV1C
Posts: 103
Joined: Sat Aug 17, 2019 12:17 am
Been upvoted: 1 time

Re: Wave Properties of Electrons Module q. 14

Postby KeyaV1C » Sat Oct 19, 2019 9:06 am

When two troughs interact/ two crests interact, it leads to a larger total amplitude, implying constructive interference. It’s destructive when the crest of one wave interacts with the trough of another.

305086803
Posts: 99
Joined: Wed Sep 18, 2019 12:16 am

Re: Wave Properties of Electrons Module q. 14

Postby 305086803 » Sat Oct 19, 2019 12:05 pm

Oh that makes sense, thanks so much!

Bradley Whitworth 4B
Posts: 54
Joined: Sat Jul 20, 2019 12:17 am

Re: Wave Properties of Electrons Module q. 14

Postby Bradley Whitworth 4B » Sat Oct 19, 2019 9:17 pm

The idea here is that when a trough and a trough interact as well as when a crest and a crest interact they constructively build on each other. It's the same as thinking about when you add to positive numbers together the answer gets more positive and similar when two negative numbers are added together the answer becomes more negative, whichever direction the value is moving the point is its absolute value is getting bigger. Similarly, even if it is 2 troughs interacting they are building on each other which is constructive.

305086803
Posts: 99
Joined: Wed Sep 18, 2019 12:16 am

Re: Wave Properties of Electrons Module q. 14

Postby 305086803 » Wed Oct 30, 2019 12:32 am

Ohhh, okay thanks so much for your help!


Return to “DeBroglie Equation”

Who is online

Users browsing this forum: No registered users and 1 guest