## Quantized v. Discrete

$c=\lambda v$

Yeo Bin Yook 1K
Posts: 30
Joined: Fri Apr 06, 2018 11:05 am

### Quantized v. Discrete

In my notes I wrote "Equations in quantum mechanics have variables that are quantized or discrete." Could someone define quantized or discrete or give an example?

Tarek Abushamma
Posts: 30
Joined: Fri Apr 06, 2018 11:01 am

### Re: Quantized v. Discrete

A discrete variable is something that has a defined set of possible values. A hydrogen atom is an example, as we can not have .33 or 1.7 hydrogen atoms. Instead, only discrete whole values (1 atom, 5 atoms, 456 atoms) are valid to quantify the variable.

Eduardo R 1L
Posts: 8
Joined: Mon Apr 09, 2018 1:38 pm

### Re: Quantized v. Discrete

Adding on to this! in lecture on 4/11/18 he mentioned "the energy of an electron in the H-atom changes as a function of n"
What is n? Is it a discrete variable? Because the output of the function is energy, what does n represent?

Noah Carey 1G
Posts: 33
Joined: Fri Apr 06, 2018 11:02 am
Been upvoted: 1 time

### Re: Quantized v. Discrete

Eduardo R 1L wrote:Adding on to this! in lecture on 4/11/18 he mentioned "the energy of an electron in the H-atom changes as a function of n"
What is n? Is it a discrete variable? Because the output of the function is energy, what does n represent?

I think what Dr. Lavelle meant is that the function n describes which numbers are apart of the set of numbers that can take on the value. That is, the output of n would be the discrete variable's value at that instant.

ramayyala1G
Posts: 31
Joined: Fri Feb 02, 2018 3:02 am

### Re: Quantized v. Discrete

I understand what discrete mean but when he was talking about variables being quantized, Lavelle made it out to be something different. My understanding of quantized is that a variable that is quantized is discrete because the act of quantization makes variables or values discrete. Is this correct or am i misunderstanding?

Chem_Mod
Posts: 17942
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 406 times

### Re: Quantized v. Discrete

You are on the right track. Having quantized energy is saying that an object can have certain discrete energy values because there exists a smallest "packet of energy value" that an atom can have.