Thanks for those of you who gave gifts totally unnecessary. As discussed we can not get lazy over the break. So here are some things to keep you current and sharp. You need to participate to learn physics. If not I can't help you.
Read Ch.18. As many times as it takes post on the blog questions and insights.
here will be a reading quiz.
On the First day of Physics!
- More charming
- http://m.phys.org/news/2013-12-physicists-publish-charming-socialites.html
- A Bugatti for Physics. Bugatti can accelerate 0-27 m/s in 2.6 seconds, which is about a 10.3 m/s/s acceleration. Assuming a u=.95. If the answer does not agree give possible explanations.
- If it were so easy.... http://youtu.be/DuBS-p2tyOU
Read-->Discuss
http://phys.org/news305888300.html
The link does not work for me. It just says "Not Found Error 404."
ReplyDelete-Kevin Meglathery
Same here
DeleteSame here
DeleteSame here
DeleteSame here
Deletecopy and paste the links into the url
DeleteSame here
ReplyDeleteBoth links are still nonfunctional. They still show the error 404 message.
ReplyDelete-Kevin Meglathery
This happens every time guys. copy the link and paste the url instead of clicking on it.
ReplyDeleteThis worked for the second link but I still cannot seem to get the first link to work because it's not just the url. Right clicking and copying web address did not work either
DeleteWhat are we solving for the bugatti problem? am i missing something?
ReplyDeleteI think we need to confirm that 10.3 is the actual acceleration. If it is not, we should probably find the real one and explain why the first was wrong.
Delete-Kevin Meglathery
The electric generators described seem like they still have limitless potential and application in the real world, not only as a more accessible means of portable energy through the shoe sole and shirt that use the generators materials, but also as a supplement to much of the energy sources we currently have. Couldn't we get even more energy out of wind turbines and dams if we also added this technology? Reaping both the benefits of the mechanical energy usually contributed by the dam or turbine plus the benefits of the new triboelectric energy.
ReplyDeleteI've actually seen waves used for energy before. I don't remember exactly what program it was in, but the energy from one wave machine powered a whole facility and that's pretty exciting when you think about all of the possibilities when it comes to this natural energy. I agree with Martin, this could be used to increase energy yield across the board through turbines and dams as well. I am looking forward to seeing where this could go, as it is a form of energy that has been right before our eyes this whole time and was utilized by accident, but one that seems virtually limitless.
ReplyDeleteIf this technology was incorporated into phones, how much space would it need? With phones becoming smaller and more compact, people might be less willing to buy a bulky one. Also, if you made the power cells too small, would it even be worth the effort? Or would they still generate enough power to be efficient?
ReplyDelete-Kevin Meglathery
This could be a great alternate, renewable fuel if scientists can manage to harness it in the ways they would like. It would be so nice not to need to charge my phone. How quickly does the reaction occur though? Would our phones only require the reaction every once in a while or continuously, and how fast would the reactions have to repeat?
ReplyDeleteAlso, has anyone seen the TV show Futurescape? They had some pretty interesting material on their most recent show. It was talking about making invisibly cloaks possible by using devices that separate waves and put them back together so it was as if the object never existed.
DeleteTriboelectric generators could help charge technology like cell phones by converting mechanical energy that would otherwise be wasted into electricity. I think this will help move the generation of electricity toward microgeneration and improve the battery lives of technology.
ReplyDeleteHopefully this effect will become thoroughly incorporated into the technology of daily life to the benefit of humanity.
DeleteI agree. Cell phones have become a huge factor in day to day life and are used for hours upon hours. This forces people to carry chargers with them, and when they need to use their mobile device, they become chained to the wall outlet with the charging cord acting like a leash for the human in question.
DeleteI agree with what you said, Noah. Everyone is always on their phones, and I have at least one person a day ask me if I have a phone changer they could use. Triboelectric generators would be really interesting and helpful to utilize in these situations.
Delete-Lauren Ziereis
I agree Billy. Using mechanical energy that would otherwise be wasted is a great idea and could be very beneficial to technology today.
DeleteI am surprised that something new and better than the lithium ion battery technology we have to today has not been improved upon. You would think that by now something better, like a super capacitor, would have been created with the mass growing technology market. Hopefully with the super capacitor that Eeaha Khare invented picked up by a large, well known company, the problem that we all have with battery life will be solved. Devices could charge within 20 seconds and last all day, reinventing how often devices are used. That makes me wonder, however, with a greater battery life and less charge time, people will become even more dependent on their devices which may not be completely beneficial to us all. - Jaz Popa
ReplyDeleteJaz, I agree with your hopes and understand your concerns, but as it stands right now, the battery life doesn't seem to stop anyone from checking their phones each minute. Yes, when the iPhone is dying and the school day is not close to over, the users tend to use it less, which allows for more socializing. But the battery life of the I5 is currently strong enough to last at least me a full day and more, while it charges to full capacity in a couple of hours, making it hardly an issue that it doesn't last any longer or charge any faster. But your concerns are viable, as I'm sure people playing Candy Crush for a virtually limitless time-frame is certainly both useless and frightening.
DeleteI agree with Jaz. I believe that It is an amazing invention but I don't think it should be used primarily for phone batteries. I believe other technologies like transportation could benefit more from this advancement. This new super capacitor would be an amazing alternative to gasoline or other fossil fuels. A new super capacitor would benefit ecologically and economically as an energy source for vehicles. It would remove or greatly reduce the need for gasoline power for vehicles. Also the initial cost could possibly be high, but over time the money saved on gas would potentially be greater
Delete-Cameron
Cameron,
DeleteInteresting enough, super capacitors in cars are beginning to make an impact in European countries. Some European "Micro-Hybrids" turn themselves off when they would normally be idling; a technology that is generally synonymous with batteries but is currently being accomplished by French car manufacturer PSA with superconductors. It is apparent that super conductors would save consumers money in the long run because of an ability to conserve fuel but, in the automobile market, initial purchase price trumps long term cost of purchase.
Colin, I found the "Micro-Hybrids" really interesting so I looked up more information on it. They are also called Stop-Start cars since the cars engine actually turns off when the car stops, like you said. In regards to the radio and air conditioning, they use batteries. But like Colin said, the initial price is very expensive: a small two person smart car can be up to $40,000 I found. If anyone is interested in the topic, you should read this:
Deletehttp://www.forbes.com/sites/uciliawang/2012/01/17/a-new-class-of-hybrid-electric-car-emerges-to-woo-consumers/
-Lauren Ziereis
Yes, battery life will be improved, but more importantly, this breakthrough can hopefully be applied on a larger scale in the future and eventually become a worthy champion in the energy crisis. We cannot rely on our current sources of energy indefinitely; we will run ourselves dry and unless we start preparing for the end now, when it gets here the world will fall into chaos and darkness. Fossil energy cannot last forever, nuclear energy is locked in a debate over whether or not it is renewable/safe, and corn simply isn't powerful enough to power the planet.
ReplyDeleteI agree. The improvement on battery life will be a nice advantage from the Triboelectric generators, but they should be more directed towards the energy crisis that we are running into. This could be a great way to take advantage of the energy that surrounds us, and always will, and harvest it into useable energy to take the place of energy sources that will not last forever. - Jaz Popa
DeleteI agree with your agreement; the energy that we are learning how to harvest is not taking away from anything or using up a delectable resource. Things move, then nothing else really happens so this is a win-win situation
DeleteWhile this super capacitor will certainly help with the energy problem, it isn't going to solve it completely. It will merely delay the inevitable because it still requires electricity and doesn't create its own source of reusable energy. Also, it looks much bigger than conventional lithium ion batteries, so phones will need to grow in order to accommodate.
Delete-Kevin Meglathery
I don't think that the optimal size for a cellphone is tiny and thin anymore. Just look at the more recent phones like the Samsung Galaxy Note 3, HTC One Max, Nokia Lumia 1520, etc. They all have enormous displays so naturally they're going to need more space for the battery, but people buy them regardless.
DeleteIt's kind of lame that humans are making holograms and other crazy devices that are so advanced, but portable batteries hardly get better. I believe the main reason is because companies are too frugal, wanting the batteries to not last as long so customers need to buy new ones. It's nice too know that some people are trying to improve our current batteries.
ReplyDeleteI don't think it is the manufacturer's intention to create under-performing products to earn more money. Rechargeable batteries last quite a while and I don't think that people replace them very often. I personally have never had to replace a cell phone battery and I would assume it to be somewhat of a hassle to do so for an iPhone. While mass produced batteries aren't the greatest they could be, they still work quite well.
Delete-Kevin Meglathery
Batteries are getting better and better, however I agree with Kev when he says manufacterers are in fact trying to improve battery life. There is not much competition with batteries besides the power companies, however, cordless and corded utilities do not compete that aggressively. The one thing that would be even better than improving battery life would be reducing the amound of energy things take to opperate. In this subject, we have been making improvements. By reducing the energy to run something, we save resources... and need less batteries.
DeleteI don't disagree with you guys, but what I was referring to was the amount of cycles the batteries can last. Your right Kevin, it's a real pain to buy a battery. So instead people just buy new phones. With a battery like the girl in the video made, that lifespan could increase dramatically. Then companies like Apple and Samsung would make less profit though becAuse their phones would last for years.
DeleteSupercapacitors have the potential to dramatically change the world. I strongly disagree with John. I think the reason batteries haven't changed is because the patents often fall into the wrong hands, the technology is underdeveloped, and it takes time and capital to make new products. How much could you charge for a new phone made with supercapicitors? I think people would pay a lot so they could charge their phone in seconds. Companies like Apple and Samsung can simply charge a lot more for products made with new technology, as they have in the past. How many people get new phones regardless of their condition when their plans expire? Great products mean customer loyalty. Companies like Apple and Samsung will only lose profit if I don't have a phone that can charge very quickly soon because they have competition who would happily make phones that can.
DeleteJohn I'd argue that Apple and Samsung and other phone companies wouldn't lose as much profit as you'd expect. The amount of people that just buy new phones rather than replacement batteries BEFORE their 2 year upgrades and not for other reasons such as a cracked screen or limited storage is probably very low. This technology also seems like its pretty useful, though not as limitless as the triboelectric stuff mentioned in the article, as its still a battery and not really a full leap to an alternative energy source.
DeleteI agree with Martin, the majority of phones are bought each year because of the new features they have in addition to such problems as cracked screens, not necessarily for the batteries. It's an age of "That's cool and new, I want that" not "Man that lasts longer" if it lasts till the 2 year upgrade fewer and fewer people seem to care right now, although in the future people might begin to choose durability and saving money over new features.
DeleteI disagree with John as well, people will always look to buy new phones as soon as their contracts expire because we as people always seem to want the newest form of technology. Having the same phone for more than two years now is almost unheard of. People always want the newest device even if their current phone is perfectly fit to last at least another year. Phone companies will not lose profit because more and more companies now are making it possible to upgrade to a new phone every year instead of every two years. Apple makes a new iPhone every year and it is frustrating to people when they just bought a new iPhone 5 and the iPhone 5s comes out. With this new upgrade available, people will buy a new phone every year just to have the newest thing possible that they can show off to their friends. This will generate a ton of profit even with the competition of other companies.
DeleteI have never had to but or replace a phone battery. Instead I have had to replace the entire phone because it broke. I believe that the battery is one of the only things I rarely have any problems with. I replaced my phones because of the actual phone breaking and being unusable rather than the battery failing over time. Also by the time the battery was failing, it was the end of my contract and time for an upgrade. I honestly believe that phones are engineered to break over time rather than last forever so the manufacturing companies can make more money.
Delete-Cameron
I completely agree with Cameron. I've never had much trouble with battery life, and the simple alternative for those who DO have trouble with this is either to seek a phone case with a built in charger or to carry a charger with you. Whether at work, home, school, it is not impossible to find the alternatives if encountering a problem such as battery life.
DeleteWith triboelectric energy, we could take previously wasted energy, and convert it into a renewable resource of energy. We could put this technology in everyday actions, like climbing stairs or even walking. This technology could be useful for powering mobile devices like our phones. If we had surfaces on roads that used this technology, we could even use braking power to generate power for stoplights. This technology has infinite opportunities to improve the way we obtain and use electricity.
ReplyDeleteI often find that my battery does not even last me half the school day, so i could obviously really use something like the girl from the video designed. How expensive would it be to create something like that? And if you created it how much would it increase the cost of the phone to be produced. I think that it would be a great idea to combine the two methods of being able to charge your phone in 20 seconds and charging it based on all natural energy. If they could create a way to store all the energy you produce in a day and then create a way to transfer that energy to your phone in a couple of seconds when you need it would be really helpful to many people who are on the go all day and cant afford to be without a phone.
ReplyDeleteI found one of the sections in chapter 18 in the textbook extremely interesting. It was the one talking about the printers and how they use of positive and negative charges to make the images. I never knew how complicated the process was; it was always as easy as pressing the print button. No wonder there are so many printing problems considering how much stuff goes on in the printer.
ReplyDeleteIt's interesting how the team stumbled upon this discovery accidentally. Reading the article, I was surprised someone didn't think of this earlier: utilizing the energy we use and make every day to power our technology. This could be groundbreaking for technology. It will surely expand (or possibly replace) conventional batteries. Using this renewable source of energy, it is dependable as long as the parts work correctly. We are always giving off energy whether it'd be walking, climbing stairs, etc. there is really no limitations on this energy source. Another positive factor the article mentioned was that the materials and the polymers were inexpensive. That is very important to consider when trying to regulate this energy source.
ReplyDeleteI agree, this type of technology to use our every day actions to power our devices seems so obvious, and one would think that the frequency with which we use technology now-a-days this field of research would be given much more precedence.
Delete-Jason Rodman
The idea appears to be simple, but as Casey said, the parts need to work correctly in order for it to be dependable. I find this to be important. On the other hand, it makes so much sense to use our every day actions to power our devices.
Delete-Lauren Ziereis
I noticed that they mentioned they could create energy form a laptops touch pad and i was wondering if the same thing could work on an iPhone's touch screen that would provide a more direct way to charge your phone using the energy lost while using your phone. I think that integrating this into future phone models would be allow us to create almost entirely self sufficient phones that would recharge them selves using the energy we create during our day to day activities eliminating the need to carry around chargers and other devices to charge your phone on the go.
ReplyDeleteFor the Check Your Understanding 2 in Chapter 18, can anyone explain why the answer is CAB and not ACB? Also, I find the Gaussian surface idea very interesting considering how strange of an idea it is. "So this has a charge, now if I put this shape on it how much electricity could get through the surface?" Really strange idea but I like it, hope to do a lab on it.
ReplyDeletei don't really understand the Gauss' Law
DeleteTHIS IS ASSUMING WE GOT THE SAME QUESTION:
Deleteit gives an explanation: Coulomb's law states that the magnitude of the force is given by . Charge B experiences a net force of greater magnitude than does charge A. The reason is that B is surrounded by two charges, both of which are a distance d away and both of which exert their forces in the same direction. In comparison charge A also experiences two forces in the same direction, but the force from C is weaker since C is a distance 2d away.
I originally thought ACB as well but the correct answer was BAC because B has two forces going in the same direction (which i mistook as two forces that canceled each other out at first). Likewise, A has 2 forces going in the same direction as well, one from B and one from C, but it is weaker because C is further from A than B is. C has one attracting force (from A, far away) and one repelling force (from B) these two semi-cancel each other giving C the lowest force.
To summarize: B has two equal forces going in the same direction, A has two unequal forces going in the same direction, and C has semi-cancelling forces.
This comment has been removed by the author.
ReplyDeleteI think its really interesting how you can transfer wasted energy like from walking or vibrations into energy to power something like a cellular device. It reminds me of how people use solar panels to generate energy into their households. Its a cool idea and i think it would really prosper in todays society because i know that my phone battery dies so quickly that it would be cool if those things could renew energy into my phone. Cool concept.
ReplyDeleteThe simplicity of using the energy used in everyday activities as a power source is both ingenious and unbelievable. No wonder this kind of technology will come in 5 years! Nevertheless, this energy source and transfer is limitless and practical beyond belief. We will never stop using energy in terms of work. By coming up with a way to power our technology with everyday activities, as simple as touching an IPhone screen. I'm eager to see triboelectric energy in work in the years to come!
ReplyDeleteMy only question with the triboelectric generators is why are they not in circulation yet because in the article it says the paper was published in 2012. Now that it is newly 2014 it would only make sense that they found a practical application for these great generators but the fact that they haven't been mass produced and used on some scale seems to raise a few red flags for me. It could be that there is a problem with the amount of energy produced if the generator itself comes in contact with some sort of insulator that screws up the whole process. Plus what happens if one of these generators comes in contact with some ionized moisture of some sort or another attractive metal and goes haywire, shocking anything in contact. These could all be potential problems with the generators and could be the reason they aren't being massed produced currently.
ReplyDelete-Dave D
If those capacitors for the phones are real, can I have one RIGHT NOW!!!
ReplyDelete-Dave D
We need to go over Gauss's Law in class before we take this reading quiz
ReplyDelete-Dave D
This simple idea, if developed further, can be very beneficial to technology today. It can provide a simple fix to struggling battery life. Also, it will take advantage of all the mechanical energy that is being wasted.
ReplyDelete