Physics
The world of forces, particles and high-powered experiments.
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Vector forces, gravity, acceleration, and other facets of mechanics.
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For discussion of problems relating to special and general relativity.
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Quantum physics and related topics.
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Atomic structure, nuclear physics, etc.
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Topics related to observation of space and any related phenomena.
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3597 topics in this forum
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and does all electromagnetic waves have the same amplitude?
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Reputation Points
- 6 replies
- 8k views
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I am trying to measure the amounts of voltages that I can get out of dry bones due to their piezoelectric properties. (basically I place the bones in between two copper metal plates with wires taped to the top and bottom of the plates). The problems I encountered was that even without releasing much stresses onto the metal plate i can still get a voltages reading and that number just stay there without me doing anything. And when my hands kind of touches it again, the voltages increased. I went to ask someone and they told me that it might be the static electricity that were built on my hand and that I should touch a metal material before doing the experiment. I did, and …
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Reputation Points
- 4 replies
- 1.4k views
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Hello Do Lines of magnetic flux have weight ?? I have this question this photo I drew it there is a Circuit with a coil >> there is a sensitive balance with a ball of wrought Iron The question is What will happen to the balance's reading when the current is in the direction in the picture ?? And what will happen If we made the current in the opposing direction ?? Thanks in advance
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Reputation Points
- 6 replies
- 1.5k views
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Hello, I need to know what linear acceleration and angular acceleration of head is. This is not for physics, this is what I'm thinking, if I'm wrong please correct me and tell my why not Shaking head-angular acceleration Tilting head back- angular acceleration (Just in case this becomes linear, why? angle is changing right?) Nodding your head-angular accleration Moving your head back and forth, in a straight line- linear acceleration Thanks
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Reputation Points
- 5 replies
- 1.6k views
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Hello If we have a coil >> and then moved a Cylinder of wrought Iron in it >>we now that the magnetic field inside this coil will parallel the axis And so the Angle between the magnetic field and the movement direction would be Zero (wouldn't it? ) Would there be a current in the cylinder ?? I mean Eddy current Thanks in advance
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Reputation Points
- 3 replies
- 1.2k views
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I got this from Youtube ( she was so funny LOL ) ---->
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Reputation Points
- 0 replies
- 882 views
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There are two protons in the room temperature. They have repulsion force each other. Between them no fusion reaction occur. If we only consider proton as particle, how much force is required for attaching them each other?
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Reputation Points
- 5 replies
- 1.9k views
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Is the electron a power or a matter ? .... I'm looking forward to see your answers for this question thanks in advance
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Reputation Points
- 1 reply
- 980 views
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Everybody knows well light is bending when it passes nearby the very big mass star. But photon has no mass. Why light is bended by very big gravity star? Any related equation about it?
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Reputation Points
- 35 replies
- 6.7k views
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Imagine you have two magnets set up so they repel each other and cannot turn. Now you bounced up and down on one of the magnets repeatedly but not hard enough for the magnets to touch. You are imparting energy into this 'spring-cusion' but where does the energy go? Does some of it become electric current and/or EM waves? If EM waves are produced, is their wavelength determined by the rate of the bouncing and the speed of light? Can you modulate the wavelength of very low frequency radio waves by bouncing magnets off of each other and changing the rate of the bouncing?
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Reputation Points
- 17 replies
- 5.2k views
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We know energy can be translated into matter. But I wonder which one is correct from this transform equations. A) Energy---------------------------------> matter + antimatter B) Energy + vacuum -------------------> matter + antimatter C) Energy + space----------------------> matter + antimatter D) Energy + vacuum + space---------> matter + antimatter E) Energy + space time ---------------> matter + antimatter F) Energy + vacuum + space time---> matter +antimatter G) Others Which one is correct? And, why do you think like that? Do you have any theoritical background?
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Reputation Points
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I do not believe in the existence of mind without matter. What is mind? We have very few analogues that we know - the fields. What is the magnetic field and especially the gravitational field? About gravitational field we know it is a property of matter.We know its effect but do not know what's gravitational field. (About the magnetic field we know more, but we still do not know what it is.) One's properties matter is that two materials can not be in the same place at the same time. But fields may be in the same place and same time.So fields are not matter. What are they? By analogy we can ask what is mind? Has certain physical properties as fields but not yet d…
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Reputation Points
- 2 replies
- 1.9k views
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Set up diamagnetic levitation like this. goo.gl/owIJo, goo.gl/1efGV. Above or below the magnet place a disc of materal, the materal must be thin and light, it will probbably be light enough if it can be made thin enough. Put fins along the top or bottom of the disc from the center to the edge that are black on one side and white on the other, they can't extend far from the disc. Put the experiment into a vacuum such as that found inside a light bulb and shine a laser onto the end of one of the fins. Would this test the materal to destruction? How long would this be likely to take with for example steel?
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- 12 replies
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- 2 followers
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The Earth's magnetic field is close to the gravity field?..so...
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Reputation Points
- 8 replies
- 2.2k views
- 1 follower
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In the Universe there are tree kind of neutrinos which have been discovered till now. We know their emission sources well. But we do not know where the neutrino disappear. Are there any reaction or place which the neutrinos are disappeared?
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Reputation Points
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Someone showed me something online about wireless electricity (sorry to be so vague). The basic logic was that a magnetic field could be tuned to some frequency where it would only discharge to a device set to receive the power at that frequency. Is this possible? What would prevent it from discharging/grounding to something other than the intended receiver? What kind of wave would the transmission be? A microwave? An ion chain?
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Reputation Points
- 4 replies
- 1.6k views
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Is it possible to identify the point in the universe where the big bang occurred, to identify a point inthe universe where everything is moving away, blasted outwards from the big bang. And if so, where is it?
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Reputation Points
- 22 replies
- 4.6k views
- 3 followers
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Hi I'm just wondering if it would be possible to keep water hotter for longer by using something like a silicone heat pad placed in the water? Would this work? If not what materials should I be looking at to achieve this? Thanks Charlie
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Reputation Points
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Think about this case. The Sun is a big mass object. So the gravity is very big as you know. The ray emitted from the Solar photosphere come to Earth every minute. Then, Is the light speed between the Sun and the Earth constant? Sun-------------------------------------------------------------------------------------Earth speed55555555555555555555555555555555555555555A case speed55444444444444444444444444444444444444444B case speed55666666666666666666666666666666666666666C case speed56677777777777777777777777777777777777777D case speed-------------------------------------------------------------------------------->E other case . Which one is more similar to …
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Reputation Points
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How to measure standard gravity more accurately on the Earth? 1kgweight = ?N Good opinion?
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Reputation Points
- 1 reply
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http://socyberty.com/paranormal/move-objects-with-the-power-of-light/ Scientists are trying to advance the technology of moving objects with light. It's a perfect source of energy, and they are hoping to create something amazing with it,
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Reputation Points
- 11 replies
- 3.2k views
- 1 follower
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What you think Possible or not Possible? http://www.space.com/common/forums/viewtopic.php?f=14&t=27767
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Reputation Points
- 18 replies
- 2.9k views
- 1 follower
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...What the topic descriptions says...How much energy do you think it would take to split a quark? I don't care which flavour of quark.[Though it would be nice to know which one you are talking about]
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Reputation Points
- 13 replies
- 2.8k views
- 2 followers
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Hello guys, I wasn't interested in these stuff those days and I never got it. Now when you do a car turn the friction from the tires provide the centripetal force right. I have few quick questions. How does the friction from tires give a force in the centripetal direction, how come it is not in the direction that is opposite to velocity direction? If the centripetal force is towards the centre why is car going in a circle, wouldn't it be sucked into the centre, Am I missing some resulting forces? Thanks guys
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Reputation Points
- 7 replies
- 5.7k views
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Shoot dry ice inside projectiles to the Moon with Rail Gun Technology to lower atmospheric Co2 on Earth to that of pre- industrial revolution values of 250ppm. If the 1/6 gravity of the moon can hold the Co2 to the Surface then an atmosphere can be formed and then seeds,water and nutrients can be added to start growing plants to make oxygen. My link
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Reputation Points
- 36 replies
- 5.3k views
- 2 followers
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