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    Why not to discuss Perpetual Motion Machines? Is Politics Involved?

    Respected All, Thank you for your replies. For the same reasons you have mentioned, I have put forth this post. You seem to be repulsive to the phrase PMM, irrespective to the context. You might have misunderstood or missed to refer to the theme of my quest that is - " The phrase...
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    Why not to discuss Perpetual Motion Machines? Is Politics Involved?

    This thread is specially targeted to the Administrators and Moderators of Physicsforums.com to allow and support the discussions on perpetual motion machines. The concept of the perpetual motion machines have interested me and most probably a lot of you since a long time. Time and again new...
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    Storing and Transferring smell

    Thanks for that info. I am learning a few things. I think the concept would be much clear if someone directly or indirectly involved in related project would put some insight into it. This topic has been one of my curiosity for a long time. We can figure out various possibilities and usefulness...
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    Storing and Transferring smell

    Has anyone ever heard of or know about any technology that could capture , store or transfer smell in any form electronically or mechanically. Are there any researches being conducted in universities or research facilities regarding this topic or have there been any achievements so far. I...
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    Gravity (over extremely long distances)

    You are right. That's what I was trying to say. We would better find out some new formula for extreme condition.
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    Bandwidth of space

    Re: Bandwidth of space!!! That was one interesting point you made. So, do you have any idea about what may be the reasonable B/W of 1 m3 of space or do you think there could be some formula to calculate it?
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    Gravity (over extremely long distances)

    You guys seem to be genius trying to crack this riddle. In fact you are doing it the way it should be done. Don't take it otherwise but I have second thoughts over the matter. It might be easy to prove theoretically that any phenomena abiding by the contemporary law of physics can happen and...
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    Particles vs Waves

    If your question was intending some straight answers then , -particles are the components of physically existing substance like air , water , solids etc that can be felt or touched. -wave is the pattern in which the particles move. eg ripple wave in water, sound wave in air. You can...
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    Bandwidth of space

    Bandwidth of space!!! Can anyone tell me what might be the bandwidth of a m3 of space or air. As we can tell the b/w of Cu wire is in MBps , ethernet cables in GBps and that of optical fibre is around TBps ; is there any way to find out or any formula to calculate the threshold capacity of...
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    Gravity (over extremely long distances)

    I was just astonished to find out how you guys get such brilliant ideas. jspstorm, I liked your query. Going by the law of physics and usual calculation , the attraction surely look possible though very negligible.But what I feel is that the gravitons responsible for creating gravity that too...
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    Ineresting thought on earth's speed and rotation.

    This was the main point of my concern. So when it's true for rockets then it should be fairly true for the airplanes and hovering objects that can hang in air. So does that mean that all the flights in earth are traveling at speed more than 1000mph while moving east to west otherwise they would...
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    Ineresting thought on earth's speed and rotation.

    Well that might be the real reason but still it is the same that I don't understand how it works? Ok lets assume that we are actually going against the earth direction of motion ie at 1000mph in a plane just after the take off. So does that makes us stationary and if were to travel in the same...
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    Ineresting thought on earth's speed and rotation.

    Oh that was among the brilliant idea I have ever heard. Though it my not be practically possible but still we can not neglect the possibility. Sure enough if we could create such long cable and holding station in the end then it would really be interesting to view the space in a swinging swing...
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    Ineresting thought on earth's speed and rotation.

    Thank you for letting me know that it was actually some kind of experiment. Are you sure that the pendulum will move in a constant direction if in equator. I just feel that this may not happen as equator is not perpendicular to earth rotation axis or may be there's some other reason and you are...
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    Ineresting thought on earth's speed and rotation.

    Yeah nice point there. Now, that we know that an astronaut can't feel or experience the movement of ISS in vacuum as well, we can say that it wasn't the atmosphere of earth doing the trick. So this brings us down to two possible reasons for we not being possible to experience the movement...
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    Ineresting thought on earth's speed and rotation.

    Let me give an example to make it short and clear - suppose we want to travel from China to US i.e east to west . We know that earth rotates from west to east. Now if we could only manage to hang in the space(like hovering helicopter) just few hundred meters above the ground without actually...
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    Prime number.

    Is there any mathematical formula to predict / generate / or test the prime number??
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