How effective is Charles' Law in determining absolute zero?

[Foofistan]

Homework Statement

Okie so I'm working on my physics work, and I need to compare Charles' Law (for finding absolute zero) to another method used to calculate absolute zero.

3. Attempt at the Solution
For this, I was thinking of looking at Carnot engine, but I absolutely do not understand and while I have looked at sources online, I think that my examiners might think I copied it off online because it goes beyond my course. Does anyone have any ideas on other methods used to find absolute zero?

 

[berkeman]

Homework Statement

Okie so I'm working on my physics work, and I need to compare Charles' Law (for finding absolute zero) to another method used to calculate absolute zero.

3. Attempt at the Solution
For this, I was thinking of looking at Carnot engine, but I absolutely do not understand and while I have looked at sources online, I think that my examiners might think I copied it off online because it goes beyond my course. Does anyone have any ideas on other methods used to find absolute zero?

Welcome to the PF.

I'd like to help, but I'm not that familiar with the different methods for finding 0K. Can you post some of the links you've found with your Google searches? Thanks.