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Electric Minerals and Natural Elctricity
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| polenski | Thursday, 9th November 2006 5:23am - No.460 |
| Nice page...can make it more graphical though. | |
| Norway-jimi | Thursday, 9th November 2006 5:59pm - No.461 |
| Thanks fir info, kepp the site up :) | |
| goolim | Friday, 10th November 2006 2:59pm - No.464 |
| how much energy can be preduced by hiting a crystal with a small hamer?, if you can get back to me by email that will be great. thank you, goolim email:goolim@hotmail.com | |
| RMCybernetics | Saturday, 11th November 2006 1:59am - No.465 |
| The electrical energy you get out will be proportional to the kinetic energy applied to the crystal when it is hit. No energy is created by the crystal, It meerly converts some kinetic energy into electrical energy. | |
| james | Friday, 5th January 2007 3:25am - No.680 |
| is there a way to use quartz to produce enough electricity to power a home and what would it take if it is? | |
| RMCybernetics | Friday, 5th January 2007 10:05am - No.682 |
| I suppose in theory it would be possible, but it would be quite pointless. A quartz crystal just converts mechanical energy into electrical energy. This means you would need to have something that was repeatedly compressing and stretching the crystal. I think that not only would it be very expensive it would be inpractaical to set up. The closest application to this that is used may be the piezoelectric transformer. This just alters the voltage and current of an alternating current that is applied the input. | |
| Curtis Adkins | Sunday, 21st January 2007 8:13pm - No.716 |
| Gentlemen, Can a piece of quartz release electrical energy with a constant pressure applied rather than being struck with a hammer? If so, How can the energy be claimed and channeled for practical use? | |
| RMCybernetics | Sunday, 21st January 2007 11:04pm - No.717 |
| No, the electrical output is proportional to the rate of change of force. This means that voltage only appears when the force on it is changing. Practical use of this is found generally in piezoelectric ignition, or piezo transformers. | |
| Devin O'Neill | Wednesday, 31st January 2007 4:53pm - No.727 |
| I have been looking around and have yet to find a satisfactory explanation of why this effect occurs. What is it about the nature of the lattice structure that causes the release of e- upon stress? | |
| RMCybernetics | Friday, 2nd February 2007 2:42pm - No.734 |
| I don't know this answer for sure, but I'll give you my best guess. If I find a better explination I'll post it below. In a piezoelectric crystal (not under dynamic sterss), the charge is distibuted evenly throughout. When a force is applied to the material the outer electrons will be displaced slightly more than the nucleus of the atoms. The specific stucture of the material will determine the angle at which the displacmet occurs. In the case of Quartz, the displacement is parallel to the force. The uneven displacement of charge makes the material polarized (has + and - ends) which effectivley induces charge on the surface of the crystal. The crystal is non conductive so it allows the charges to remain seperated. The effect only occurs when the stress is changing because the charge will naturally redistribute its self to it lowest energy level. This does not quite apply in reverse because you can apply a steady voltage to the crystal which will produce a steady deformation of the crystal material. This is because the non conductive nature of the material allows the applied voltage to remain high between its surfaces. I hope that helps, feel free to ask more. | |
| Synaptic Axon | Thursday, 8th February 2007 11:09am - No.748 |
| It seems to me that the tidal forces of the moon that act upon our oceans would provide a changing pressure gradient to act upon crystals. Not necessarily the gravitational force itself but the pressure of the volume of water. If crystals were attached at fixed distances on a long rod and submerged, a pressure gradient would exist along it's height and generate a burst of electricity. One would also expect temperature gradients that sterling engines exploit. Rotation of this crystal rod around a central axis, either from the ocean currents or actuators would change the stresses on the crystals which should create more electricity, right? Where do these electrons come from? Wouldn't the effect of this on a grand scale cause the reduction of important biochemicals in the oceans of Earth? One could also exploit this using gravity and the head (or pressure) generated by the fall of a fluid in the gravitational field. If the water is transported to the higher point through a free cycle (such as evaporation->precipitation) and can be recaptured at the higher point, energy could be extracted. What effects does this piezoelectric effect have in nature? Does this explain the abundance of precious metals in crystal deposits? Gold is reknown for it's affinity to quartz and I can now picture some kind of natural electroplating occurring from minute quantities of gold in solution when astronomical tidal forces and plate tectonic movement charge the crystals and precipitate out metals. This would electroplate the crystals over time and also provide energy for other mineral formation requiring oxidized ions. Just my thoughts.. could be misunderstanding things. | |
| RMCybernetics | Thursday, 8th February 2007 2:31pm - No.749 |
| Yes. I would expext that tidal and pressure chnges will create small electrical changes in crystals. One particularly large source of natural piezoelelectric activity would be plate tectonics. Tremendous forces and huge volumes of material would allow for the rise of very complex elecromagnetic fields. The field would be quite complex because of the random arangement of crystals of different types and orientation near a fault line. Electrons are not released form the crystal, they simply get displaced relative to the atomic nuclei. This change in electric field can induce electrical currents in nearby conductors. I'm not sure how this effects biochemicals in the ocean, but I suppose the electric fields could cause some migration or dissasociation of dissolved ions in sea water. Hydroelectric power plants are allready exploiting the free cycle. The dams provide a method for controling how much water falls under the influence of gravity. The sun then does all the work to put the water back up in the sky. I think that the metals found crystal deposits are more a product of relative density of liquids. Piezo electricity is usually expressed in an AC form because a force is normally brief, and the relxing crystal will then produce a dipole of opposite polarity. For electoplating / electrolysis to occur, there would need to be a force that constantly increases or decreases over a long period. I'm not saying it's not possible though, I'm sure piezoelectricity does have all kinds of effects on the earth, but they are usually overwhelmed by other more noticable effects. | |
| Roeland | Thursday, 8th February 2007 9:05pm - No.750 |
| I don't think the rate of change of force (dF/dt) is high enough when looking at tidal forces or plate tectonics. Though the forces working for example in a subduction zone are very large(hundreds of Mpa, effective stress that is), the rate of change of force needed to create observable electromagnetic fields only results from rock failure (earthquakes). A strong source for these fields is the Wadatti-Benioff zone. | |
| Synaptic Axon | Thursday, 8th February 2007 11:25pm - No.752 |
| Thanks for the responses. Good food for thought and a nice site overall. | |
| a_nomad | Saturday, 24th February 2007 8:18pm - No.807 |
| If a repeatable mechanical force application can be arranged, how much crystal versus how much force would be needed to power the average home for a day? Have I left too many variables to answer? Let me know and I'll elaborate. | |
| RMCybernetics | Sunday, 25th February 2007 12:40am - No.808 |
| It would depend on a lot of factors, but if you wanted 1kW of electrical power you would need at least 1kW of mechanical power driving the crystal. The crystal ould need to be large enough to withstand this kind of force. | |
| yasmin | Tuesday, 24th April 2007 1:08am - No.1193 |
| this iz great for my science project peace out | |
| Scott | Sunday, 20th May 2007 7:08am - No.1314 |
| is there a way to figure out how long a crystal would last, if it was put under a persistent dynamic stress, before it is "unuseable" a.k.a. the power output was much less then originally created, say 10% of original energy output? is there a formula that could figure it out, say quartz as an example? i'm curious how hard it would be to put a type of piezoelectric "mat" in a commonly used area of the house to see how much electricity could be generated from simle things like walking to the fridge, and to see what it would take to run different household appliances. I know it is impractical to do so I am just very curious about piezoelectricity and would like to set up some experiments and calculations of my own. i was also curious where to get equipment to set up a piezoelectric experiment and roughly how much it costs. thank you for your time, ~Scott p.s. - sorry about any spelling errors i am very tired and realize my typing isn't the most accurate at the moment. | |
| Scott | Sunday, 20th May 2007 7:15am - No.1315 |
| where would I go to find out information on how to make my own piezoelectric devices? | |
| RMCybernetics | Sunday, 20th May 2007 1:18pm - No.1318 |
| I don't know about your first question. I think there would be a lot of variables do calculate. The piezoelectric mat would be quite simple to produce. You could make one using a selection of piezo sounders/transducers linked up to some sort of battery or capacitor charger. You would then be able to power small devices from the charged battery/capcitor. You can find info on purchasing piezo sounders on the DIY Cymatics page. | |
| DustWolf | Tuesday, 29th May 2007 8:17pm - No.1354 |
| What exactly is the efficiency of this conversion? E.g.: Would it be a good idea to make a piezoelectric generator, which converts some rotational force into electricity using quartz? Would the efficiency be comparable, or possibly better than the one of the electromagnetic generator? | |
| stephen | Wednesday, 13th June 2007 4:31am - No.1390 |
| piezoelectricity is one thing but em waves are received by quartz its harvesting it (if possible) and what about the constant vibrations of all matter? electrostatic? electromagnetic? im sure theres something to tap this. what about quartz? | |
| RMCybernetics | Wednesday, 13th June 2007 10:48am - No.1391 |
| DustWolf: The efficiency of electromagnetic generators is often around 98%. I don't think quartz would be comparable for converting knetic energy to electrical energy. stephen: It's all fundamentally electromagnetism. If you tap energy from some vibrating system then you will cause the vibrations do diminish. | |
| Tammy | Friday, 11th July 2008 8:50pm - No.2898 |
| Do they use the thermocouple in space? I always seem to hear that in the sunlight objects in orbit get very hot but in the shade very cool. can they use this temperature difference to generate power? does the system need to be enclosed in a gas or fluid or can it work in a vacuum? | |
| RMCybernetics | Friday, 11th July 2008 10:31pm - No.2900 |
| Yes they are used in many applications. A thermocouple will work in gas, liquid or vacuum. | |
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