Can brainwaves be converted into electricity and vice-versa?
89706
I assume you're talking about the things measured by an electroencephalogram: they are, actually, electrical current, after all.\n\nThe tricky bit is that the voltages and amperages are incredibly small: microvolts and milliamps.  Slim pickings, energy wise!\n\nConversely, implanted electrodes are used in brains--mainly in non-human brains, for research purposes, but slowly we're doing a few useful things with the electrodes in humans--and their electrical activity triggers neurons to fire, creating, indeed, brain waves.\n\nDon't hold your breath on using brain energy to power much of anything, nor on using electrical stimulation to produce coherent sensory experience other than triggering memories and a handful of other small change things: we're quantum leaps away from that, still.
76279
dont see why not. just some simple energy conversions. theoretically it would work, but maybe slow down due to energy lost as heat due to friction and such... but it should work.
442259
No it is not possible at this time and I doubt anyone will ever attempt it for a couple of reasons.  From NASA's webpage you can read the rest by clicking on my sources link\n\n1. Most of the power in lightning is dissipated as thunder and light, which cannot be easily harnessed to generate electric power.\n2. However, even just the electrical current of lightning is considerable -- 20,000 amps on average, the same as 100 steel welders. But the power is on for only a brief fraction of a second, so the total power is actually small, only enough to power a 100-watt light bulb for six months.\n3. The huge surge of electrical current over very brief times makes storing the energy impractical.\n4. Lightning strikes to specific locations are infrequent and inconsistent. This makes scheduling power availability impractical.\n5. Lightning can be very damaging. The collection systems have to be incredibly robust, which would drive up costs. Lightning is also very dangerous, making it tough on the collection system workers.\n6. Lightning would have to be collected over a huge area, making the system impractically expensive.\n\n#3 Its saying that lightning comes with an extreme burst of energy in a very short amount of time.  When it comes to electricity it takes awhile to build up, electricity created by a damn for example is created by the water and the turbines, it builds up slowly and is put into its reserve where ppl then draw from it.  If there was to be a massive spike were the water all of a sudden speed up to even 100mph the turbines would overheat and become useless.  Imagine charging a battery, instead of putting it on a charger and gradually letting it build up you just zapped it with a tazer or something.  Its not going to charge its going to explode.  Therefore it is impractical to store it becuase we have nothing that could take such a massive amount of energy in such a short time
385307
Yes.  It consists in sticking two metallic objects of different kind, usually a galvanized nail and a copper coin, in a potato or lemon. These two objects work as electrodes, producing an electrochemical reaction that generates a small amount of electricity.
225558
That question isn't quite right. A simple analogy to the working brain might be a moving car. Not just a part of the car is moving but all of it. You can train your brain to work better in certain aspects though. Evolution is still changing the way our brain works, for better or worse, it just adapts to the way we live.
1146414
http://science.howstuffworks.com/electricity.htm
145391
I believe that you have described radio and TV transmission without cables.  If you could supe that up to practical power levels (lightning?) we would all become receivers and turn to toast.  But I do believe that Tesla had plans on how to transmit power through the air and you might want to check that out as he was an electrical genious.
870424
in electrochemical cells we have chemical reaction . since conversion of this chemical energy to electric energy is mainly becoz of combination of ions ..we hav electric on account of this chemical energy till we have free ions to combine once all ions of solution combines  no more energy conversion is there
14043
Yes, it is possible. I'll give an example using the game of life.\n\nA glider can represent a pulse, and a glider gun can generate unlimited amount of pulses. By colliding of two gliders at exact time and position, logic gate, such as AND, OR, NOT, can be constructed. There is also ways to store numbers using still life.\n\nHowever, it would be very inefficient, as the previous answer pointed out.
509058
No way.  And the evidence is easy to find, too.  Plug in a power converter and run something off it for a while, then put your hand on the converter -- it's hot, right?\n\nThat heat is *wasted energy* -- converting electricity from one voltage to another requires work to be done, and that work generates heat, which is the indication of the inherent inefficiences of the process.  If you then reconvert the electricity to 120V, you will experience a second inefficiency, evidenced as more heat lost.
255438
I think action potentials is what you mean. but neurons in your body do not use different coding mechanisms to the ones in your brain
1002140
I don't fully understand what you are receffing to when you say waves. Do you mean brain waves?\n\nIn that case our feelings do influence our brain waves. I don't know much about this but hopefully someone on here can answer that.
229332
I have heard of the MRI brain scan which checks were brain activity is for a person's answer.  When people lie they use the creative part of their brain which lights up in the MRI computer.  When they tell the truth they use there memory section.\n\nThis test is not 100% conclusive though as brainwaves differ slightly from person to person.  But I would expect this technology to work out doubt (though there will always be some).
446680
i have no dought that this will one day happen...people have found on freak events, a brain cell that reacts to a picture in lab animals...i would imagation after a while they will have much better brain mapping to a cellear level...then from there they could figure out how to make a computer to read the information...but i think that is as far as it will go...i do not think that the computer will think for us or anything like that...i think it would be read only in a sense
330278
Electricity is a form of energy that can be transmitted efficiently through copper wires because it is a good conductor. To transmit the same electricity through air, you will need very high voltage as air has a high resistance. Additionally, the efficiency will also be reduced as there may be arcing. High voltage is also dangerous.\n\nHowever, when we send a Radio Wave, it is also a form of energy. In the early days of Radio, there is a circuit that is popular with Radio enthusiasts called the Crystal Radio. The Crystal Radio does not need a battery to power it. It uses the Radio Signals itself. With some innovative design, one can tap into the Radio waves and convert that into electrical energy. This is a form of wireless electricity. However, the power level is very low.\n\nSo potentially, it is possible but there are probably many challenges ahead. Today, it is still not viable but we never can tell, technology has always done the impossible.\n\nFor very short range, electricity may be wirelessly  transmitted via induction (magnetic fields). Some pace makers are recharged via induction.
446042
Brain waves would still fall trap to the familiar problem of someone who believes deeply that what they are saying is true. A pathological liar would not activate lying centers of the brain, just as he would not have an anxiety response on a standard lie detector. Also, there's the problem that the fMRI does not necessarily measure neural activity, merely the presence of blood. Further, the areas that "light up" when one is lying could also activate for various other reasons. They are the areas that control "emotion, conflict, and cognitive control - the amygdala, rostral cingulate, caudate, and thalamus," all of which would be involved in an intense interrogation.
813210
No.\n\nIt is perfectly possible for electricity to flow even at absolute zero - those who think it is not need to revisit their understanding of what thermodynamic temperature is.\n\nSuperconductivity is a very special case, and you cannot form electrical impulses in a superconductor - in fact you cannot change the current flowing in a superconducting circuit at all without introducing a non-superconducting element (usually called a weak link).