I have been thinking alot about this 1st Law, where energy is neither created or destroyed and i am having difficulty understanding this.

After viewing a number of PBS shows about the universe is expanding based on Quantam Physics and the discussions of String Theory in which there may be more than one universe, not to mention the discussions of Quarks and Deep Energy which makes up 70% of the univers, DOES THIS LAW STILL MAKE SENSE AND IS IT STILL CORRECT?

Views: 463

Reply to This

Replies to This Discussion

Yes, Jim, you are right, we mostly deal with the first law using classical thermo. It's still correct.

It's statistical thermo that deals with quantum states of atoms and particles. String theory and multiple universes are still under debate. A quark is just a sub-atomic particle which makes up matter. We do deal with deep energy retrofits using the first law of thermo, however, the search for dark energy in the universe has little to do with our daily tasks.

There is an area where advanced physics comes into play within the work of home energy pros: photovoltaics. Solar cells use sunlight as a radiation source to  induce electrons to transfer between different bands (i.e., from the valence to conduction bands) within the material, resulting in the buildup of voltage between two electrodes.

Also some of the electronic components we use like transistors, integrated circuits, diodes, make use of quantum physics and electrodynamics.

 

The laws of thermodyamics still hold in regards to heat, energy, and work in the real world in which we live. From wikipedia:    [sorry, can't get rid of bold type]

The four laws of thermodynamics are:

  • Zeroth law of thermodynamicsIf two systems are in thermal equilibrium with a third system, they must be in thermal equilibrium with each other. This law helps define the notion of temperature.
  • Third law of thermodynamicsThe entropy of a system approaches a constant value as the temperature approaches zero.The entropy of a system at absolute zero is typically zero, and in all cases is determined only by the number of different ground states it has. Specifically, the entropy of a pure crystalline substance at absolute zero temperature is zero.

Hope this is helpful!

Jim, on second thought: Uh oh: entangled particles break second law of thermodynamics . The second law of thermo, or no perpetual motion machines, is being revisited. Quantum teleportation of light particles of 89 miles happened this year: Quantum teleportation using active feed-forward between two Canary ... . There will certainly be quantum technologies introduced into society and home energy applications within the next century. Great discussion topic!

Jim . . . I would add that plenty of things at the quantum level behave differently than what we are used to observing (and understanding) on the larger scale.   As an example, You might be interested in this video:   http://www.youtube.com/watch?v=DfPeprQ7oGc.

RSS

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Richard L. Sanderson replied to Bud Poll's discussion Inconsistant Local Authority
"Bud: I like the idea of a third party review board. My own experience in local government is that…"
4 hours ago
Matthew Lutz commented on Kaplan Clean Tech's blog post The Difference Between Home Inspection and Energy Auditing [Infographic]
"I would have to agree with Steve on this.  I am a Certified Energy Manager and have performed…"
9 hours ago
Matthew Lutz joined Diane Chojnowski's group
Thumbnail

Hall of Shame

In this group, members share an array of images from the field, showing the kinds of issues…See More
9 hours ago
Matthew Lutz replied to Kari Sauder's discussion Easy Water Heater Venting in the group Hall of Shame
"I have been in the HVAC trade since 1986. I have recently completed a Home or Real Estate…"
9 hours ago
Susan E. Buchan posted an event

EEBA Houses That Work at Hilton Asheville Biltmore Park

November 3, 2014 from 8am to 4:30pm
Registration: 8:00 amSession: 8:30 am to 4:30 pmWorkshop Covers:Introduction to EEBA and its…See More
13 hours ago
Susan E. Buchan posted a status
"EEBA has scholarships to our Houses That Work Sessionsfor Vets! Contact info@eeba.org for more info"
14 hours ago
EnergyLogic Academy posted events
15 hours ago
Andrew Peel posted an event

Using PHPP in Building Design and Certification at Queen's Quay

November 24, 2014 at 9am to November 25, 2014 at 5pm
In this two-day course, participants will learn how to use the PHPP for residential building design…See More
15 hours ago

© 2014   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service