Member • May 17, 2012
Administrator • May 17, 2012
Member • May 17, 2012
Member • May 27, 2012
Member • May 27, 2012
well, i don't know much about what is involved in inventing the time machine, but i know it is everyones dream invention. and of course, the first company to invent it will become instant trillionaires and be remembered for centuries. i can personally say that if i had 3 wishes, one of them will go to the invention of a time machine : - )The_Big_KWell, we need something concrete to build upon. I doubt Time Machine will ever be created because if we'd ever create it; I'd definitely come back in time to visit myself. But I haven't met me yet, so ... 😒
Member • May 28, 2012
Member • May 28, 2012
Member • May 28, 2012
Now you can. 3 D food printers are already available. You can download and print the food.Dancer_EngineerAnyone up for this?! 😍
Member • May 28, 2012
Member • Jun 1, 2012
Pardon my ignorance, but I did not understand how are the cartridges filled with the required ingredients?bioramaniNow you can. 3 D food printers are already available. You can download and print the food.
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Member • Jun 2, 2012
Member • Jun 2, 2012
Member • Jun 3, 2012
theoritical experiments are there for this...heat is convereted to sound and then to electricity.......Leon DnjCan we try to make electricity by sound so much sound pollution and we will get much electricity.
Member • Jun 6, 2012
Member • Jun 6, 2012
Member • Jun 6, 2012
i dont know about going back...bt it is possible to go to future if we invent a train that travels completly around the whole earth atleast 6 tymes per sec........that is to travel with more thanthe spee of light..............cagri_90I have read an article about time travelling which indicates that it can be possible in 2050 by going back. but it is just a guess.
Member • Jun 8, 2012
A study reported in the journal New Scientist taht the total sound energy out put of a full professor in engineering for a whole year when converted to electricity was worth about ten cents.Leon DnjCan we try to make electricity by sound so much sound pollution and we will get much electricity.
Member • Jun 10, 2012
Member • Jun 10, 2012
But from my point of view the theoretical experiments is not quite enough to give finish touch...gwendollentheoritical experiments are there for this...heat is convereted to sound and then to electricity.......
take a look at these..........
<a href="https://en.wikipedia.org/wiki/Sonoluminescence" target="_blank" rel="nofollow noopener noreferrer">Sonoluminescence</a>
Member • Jun 10, 2012
yup you are right......but we some need some theoritical analysis to step into practical work and to finish it up.........right!!!!!!!!!!😉Leon DnjBut from my point of view the theoretical experiments is not quite enough to give finish touch...
Member • Jun 10, 2012
Member • Jun 11, 2012
ya the method i above said is just used for mobile,laptop charging etc like small uses.........bioramaniIt is suitable only for very low power applications. It will not be suitable for any bulk use of power. Just think in reverse One can get an ear splitting noise from just a few watts output from an audio system. What I am getting at is that one needs a huge volume of sound to generate a modest power. If one can consider a laser like sound beam, then a suitable piezo electric device may be able to harvest it more effectively. Normal ambient sounds are not of much use.
<a href="https://www.engineeringtoolbox.com/sound-power-level-d_58.html" target="_blank" rel="nofollow noopener noreferrer">Sound Power</a>
Member • Jun 12, 2012
actualy now i got one doubt...............we can convert sound energy to electrical energy through microphones.........then y all this??????????gwendollenya the method i above said is just used for mobile,laptop charging etc like small uses.........
Member • Jun 13, 2012
Member • Jun 13, 2012
Can you brief me about nano-solar technologyNandakumarkhow abt an alternate energy resources which doesn't harm the environment.....................
like nano-solar technology and so on😀
Member • Jun 13, 2012
Member • Jun 13, 2012
yeah sure me too know few abt this oly upto that i'm telling kaarthivgCan you brief me about nano-solar technology
Member • Jun 14, 2012
gwendollenyup you are right......but we some need some theoritical analysis to step into practical work and to finish it up.........right!!!!!!!!!!😉
if we come to the actual topic not only theoritical but also there are certain succesful experiments done which generated the electricity from sound......
but unfortunately not all sounds are suitable for this.......and research is going on.....
for details check out this page
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I think the govt. should enrich the science academy so that we can get chance for research. We deserve more opportunity don't we?....gwendollenyup you are right......but we some need some theoritical analysis to step into practical work and to finish it up.........right!!!!!!!!!!😉
if we come to the actual topic not only theoritical but also there are certain succesful experiments done which generated the electricity from sound......
but unfortunately not all sounds are suitable for this.......and research is going on.....
for details check out this page
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Member • Jun 14, 2012
Its better to start a debate about it. Government does lot of initiatives which is not under the light.Leon DnjI think the govt. should enrich the science academy so that we can get chance for research. We deserve more opportunity don't we?....
Member • Jun 14, 2012
Are you from Bangladesh?aarthivgIts better to start a debate about it. Government does lot of initiatives which is not under the light.
Member • Jun 14, 2012
yup we deserve it.........but it is not that we wait for the govt.to give us an oppurtunity......i believe in creating one's own oppurtunity...........Leon DnjI think the govt. should enrich the science academy so that we can get chance for research. We deserve more opportunity don't we?....
Member • Jun 14, 2012
Why indeed? The amount of energy depends on the sound flux in watts/sq.cm. The larger the area of the interceptor greater the collected power. A moving coil loud speaker can do a better job than a microphone. Larger the dia of the speaker the better.gwendollenactualy now i got one doubt...............we can convert sound energy to electrical energy through microphones.........then y all this??????????
Member • Jun 15, 2012
then i think it is not beneficial for us to convert the sound(i.e,due to pollution) to power........bioramaniWhy indeed? The amount of energy depends on the sound flux in watts/sq.cm. The larger the area of the interceptor greater the collected power. A moving coil loud speaker can do a better job than a microphone. Larger the dia of the speaker the better.
Member • Jun 15, 2012
That is my feeling too.gwendollenthen i think it is not beneficial for us to convert the sound(i.e,due to pollution) to power........
Member • Jul 7, 2012
Member • Jul 7, 2012
Member • Jul 7, 2012
If an order of magnitude calculation is done it will be known that this is a non starter.sudha madhuriCreating electricity from sound or noise is really good idea. Because if it become real then the street lights will work on that power and if noise is there then only they will glow and it is really useful for today's traffic and another application is in colleges and schools , in those areas the teachers will encourage students to do noise for power saving 😉 and many.... If we use powerful microphones to capture the small signals whose amplitude may be around 5 -10 mv then the signal may be amplified to 10 or 12 v using op-amp. Then we have to use regulators , amplifiers , power amplifiers to rise this voltage to 230 v 😔. I think it is some what difficult but surely becomes possible.
Member • Jul 9, 2012
Member • Jul 9, 2012
😁chithrachennaiautomatic make up machine (portable ) lol 😍
Member • Jul 9, 2012
Why we wanna create electricity from sound/noise signals, when we are already using Natural resource "Sun" as for solar energy .... yeah the cells are bit costly .. but in recent years cost has dropped a lot.sudha madhuriCreating electricity from sound or noise is really good idea. Because if it become real then the street lights will work on that power and if noise is there then only they will glow and it is really useful for today's traffic and another application is in colleges and schools , in those areas the teachers will encourage students to do noise for power saving 😉 and many.... If we use powerful microphones to capture the small signals whose amplitude may be around 5 -10 mv then the signal may be amplified to 10 or 12 v using op-amp. Then we have to use regulators , amplifiers , power amplifiers to rise this voltage to 230 v 😔. I think it is some what difficult but surely becomes possible.
Member • Jul 9, 2012
An object with mass can move with the speed of light or even more !Leon DnjAn object which has mass can not run as the light so i think it will be a tough job to make time machine...
Member • Jul 9, 2012
![[IMG]](proxy.php?image=http%3A%2F%2Fi49.tinypic.com%2F28jfqjs.jpg&hash=c455b16ca97d85e0605b57f78c38a511)
Member • Jul 9, 2012
Member • Jul 9, 2012
Sir you are absolutely correct. Producing electricity from noise or sound is of not effective. The sun based electricity production is also there . But we are still strugggling with lack of electricity.On a cloudy day we may not have that much of effective solar energy but sound will be generated everywhere and on any day. Hence I think it is better to produce elctricity from the available sound. My idea is atleast to develope a circuit that can charge the laptop whle listening to songs , run the bulbs in railway stations and bus stops and highways which will definately crouded .BetterThanBeforeWhy we wanna create electricity from sound/noise signals, when we are already using Natural resource "Sun" as for solar energy .... yeah the cells are bit costly .. but in recent years cost has dropped a lot.
Plus, Production of electricity using noise/sound signals will increase noise pollution ....
Member • Jul 10, 2012
Member • Jul 10, 2012
Thank you so much for your valuable response sir. I know that it is highly impossible. But it is one of my crazy idea sir.bioramaniIt is important for an engineer to an order of magnitude calculation. We are always quantitative. The available sound has negligible realisable power. Unlike emf waves, sound waves are compression rarefaction waves. You need very large area collectors to get even tiny power out. If you are listening to songs from the lap top, how much of that speaker output do you think that you can recover? It just would not recharge the laptop. It will amount to a perpetual motion machine.
I agree with you that sound is energy but very very low level energy. Not worth the cost of recovery.
Member • Jul 10, 2012
Member • Jul 10, 2012
Member • Jul 10, 2012
Member • Jul 11, 2012
We can charge the laptop, using our own body heat. Have read an article about it.sudha madhuriMy idea is atleast to develope a circuit that can charge the laptop
Member • Jul 11, 2012
Member • Jul 14, 2012
Member • Jul 15, 2012
Member • Jul 15, 2012
i dnt know if it is right or not.....but my idea is we know about spell checkers....sudha madhuriI want a pen that can give a beep when we wrote a wrong spelling 😀.
Member • Jul 15, 2012
The true time machine does not travel in space. It travels in time. Worm holes are for bypassing the speed of light in space travel.ekta solankii guess its possible to invent a time machine.... Simply by finding worm hole.... Bt dats a difficult task...
