Register to reply

Theoretical Entropy Clock

by dbmorpher
Tags: clock, entropy, theoretical
Share this thread:
dbmorpher
#1
Jan13-13, 08:53 PM
P: 52
Hello dbmorpher here,
I was looking at some articles on entropy and wondered, could this be used to calculate time?
Entropy is known as the arrow of time, figurative I know but could actually be used to measure.
If there was a device that calculated the entropy in a set system couldn't it automatically calculate it and give a numerical value?
This would need a set system for all clocks but would render any other non- atomic clocks obsolete because it is based on measurements and calculations instead of gears and circuitry.

I would like to know if what I said in that last sentence could happen and if I could make one myself.

I found this
http://www.eoht.info/page/Entropy+clock
But I do not understand it very well.
Phys.Org News Partner Physics news on Phys.org
Engineers develop new sensor to detect tiny individual nanoparticles
Tiny particles have big potential in debate over nuclear proliferation
Ray tracing and beyond
ZapperZ
#2
Jan13-13, 09:16 PM
Emeritus
Sci Advisor
PF Gold
ZapperZ's Avatar
P: 29,238
This is VERY puzzling. What system do you wish to measure the entropy of that is SO reliable as to be used as a clock? And how would this be more accurate than current atomic/Cs clock?

BTW, the naive link between entropy and the arrow of time is a QUALITATIVE relationship, not a QUANTITATIVE one. Nothing here says that entropy can provide an accurate MEASURE of time.

Zz.
russ_watters
#3
Jan13-13, 09:28 PM
Mentor
P: 22,304
Right. I could use a pot of water on my stove as a clock, but it would be cumbersome and not all that accurate.

dbmorpher
#4
Jan15-13, 03:15 PM
P: 52
Theoretical Entropy Clock

Well from what I have learned entropy is measured not observed, therefore a small calculator sized computer could be fitted to a clock and measure the entropy in the system, the only way for the clock to be inaccurate is if the laws of thermodynamics broke.
Refute me if I am wrong.
ModusPwnd
#5
Jan15-13, 03:28 PM
P: 1,071
Quote Quote by ZapperZ View Post
What system do you wish to measure the entropy of that is SO reliable as to be used as a clock?
Can you not think of all clocks in this way? A wound clock has less microstates available to it than an unwound clock. A clock is that which measures entropy change reliably. Reliably being defined as: it progresses in some constant ratio to other clocks.


Register to reply

Related Discussions
The light clock and the simple clock Special & General Relativity 20
Time dilation explaination with mechanical clock instead of light clock Special & General Relativity 55
Clock and entropy Classical Physics 9
Chemical clock and entropy Biology, Chemistry & Other Homework 1
A moving clock lags behind a stationary clock Special & General Relativity 2