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: 635

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

Featured Forum Discussions

What causes a temperature plane in a home

Started by Energy Wise Solutions in HVAC. Last reply by Peter Krych on Friday. 4 Replies

Velocity Pressure Testing

Started by Horace Douglas Hunt, Jr. in General Forum. Last reply by Horace Douglas Hunt, Jr. Apr 15. 2 Replies

Videos

  • Add Videos
  • View All

Latest Activity

Profile IconWill johnson and Alan Lehman joined Home Energy Pros
58 minutes ago
Alana Barnett added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

Energy audit equipment -all very new

I have a FLIR infrared camera, E40bx. Only used a few times -box, camera, charger, it is all there,…See More
18 hours ago
Alana Barnett joined allen p tanner's group
Thumbnail

Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
18 hours ago
Crosbey Archery posted a blog post
22 hours ago
Profile IconRon Sarrick and Alana Barnett joined Home Energy Pros
yesterday
Jim Fowler posted a discussion

TREAT modeling of mid-rise apartments low heating load

Does anyone have experience using TREAT to model mid-rise (3-story) apartment buildings with…See More
Friday
Peter Krych replied to Energy Wise Solutions's discussion What causes a temperature plane in a home
"I also should have asked where the furnace was located,basement,1st or 2nd floor. In any case the…"
Friday
Profile IconJim Fowler, Jennifer Flanagan, Debra Smit and 2 more joined Home Energy Pros
Friday

Home Energy Pros

Welcome to Home Energy Pros – the unique digital community by and for those who work in the home energy performance arena.

Home Energy Pros was founded by the developers of Home Energy Saver Pro (supported by the U.S. Department of Energy) and brought to you in partnership with Home Energy magazine.  Home Energy Pros is sponsored by the Better Buildings Residential Network. Please honor our Guidelines

© 2017   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service