Physics

do you have a 1-3 min video on force @ work? with explanation {: thankyou !

Regardless of if Steron are right in general, does this information seem accurate? http://www.steorn.com/images/asymmetry-and-energy-in-magnetic-systems.pdf

So I was thinking about the idea that light is pulled by gravity... if my understanding (the analogy of light in an accelerating elevator being treated as equivalent to light accelerating due to a force acting on it) is close enough to accurate my logic here should work. Ok, so basically energy is proportional to the product of mass and the square of the speed of light; this resembles the formula for centripetal force, which is proportional to the product of mass and the square of the speed of light, except also divided by the radius of the circle. So according to this logic, the centripetal force that pulls on a photon of light would be proportional to the ratio …

Ok, so supposedly white light is a combination of red, green, and blue light... but programs like MS Paint treat it like the amount of light goes from 0 to 255; in theory, could brightness of light be infinite? If so, would that imply that brightness of the components would be infinite? If so, then, would a better representation of light be a 3-dimensional graph, wherein one axis represents the intensity of red light, another the intensity of green light, another the intensity of blue light... and based on the intensity values for these three component colours, a position in 3-space on the graph would represent a particular colour, so as for colour to be seen as a li…

If diamonds are very good thermal conductors, transparent, but the cut of the diamond concentrates light (and its energy?), would a diamond laying in the sun get hot - and if so (or not) would an infrared camera be a decent way to find a lost diamond laying in the grass? Simply put, would a 2 carat diamond create a "hot" or "cold" spot in the display of an FLIR camera? FYI - I probably won't understand the reasoning behind why, so don't feel obligated to write a page and a half of explanation why - a yes or no with a brief description would be cool.

How many of the 700 or so numbered VFP errors can you successfully recover from programmatically, and allow execution to continue?

This fall I plan on doing a physics course which uses Mathematica; more specifically, a mechanics course involving differential equations. Some, but not many, of the computers on campus have Mathematica installed on them, so if I were to use Mathematica outside of class time, I would need to either have access to those computers, or to have access to Mathematica at home. I do not plan on buying the actual program, (I have not completely ruled that out though) but I have heard that they offer a trial version that lasts two weeks; if I start now this should give me time to familiarize myself with Mathematica before the semester starts, making that physics course a little bi…

Or somewhere between the two? One concern related to climate change is the notion that the melting ice caps would cause rising ocean levels to flood coastal communities. This is used as a reason to cut back on fossil fuel emissions, but there's also some uncertainty as to whether or not such cutting back would stop this problem. So why not address the global flooding issue more directly with a container of some sort? More specifically, my idea was that a large quantity of whatever material was practical for this (if any) would be formed into a gigantic container, filled with ocean water, and then tied to a space shuttle (or maybe a series of space shuttles) and ca…

I've been reading these two pages on Wikipedia and my head feels like it's spinning. I understand the whole concept of light being absorbed/reflected to create color (subtractive). And I understand what additive color is, but I don't understand how these two interact, or how to tell which is the one producing any given color you might see. For example, if I have a red shirt, how was it created? Is it absorbing all light except red, thus it looks red to me? Or was it created by *combining* colors to make red? (Although in that case, it would just be the single color red. But say the shirt is yellow. Is it absorbing all light except yellow? Or was the shirt made by comb…

www.FLRacing.co.uk Proving The Impossible!

I had been thinking lately about why moving magnet perpendicular to a wire causes electric current. my conclusion is that the changes in magnetic strength ignites the electrons to move since a magnet's strongest field comes from its N point and basically what a moving magnet is doing is changing its field strength. Please help me out if my logic is wrong since I haven't been taking physic since junior high

Particle decay is clearly some statistical process. Generally speaking, particles are some stable solutions of some physics (like a field theory) - they are some local/global energy minimums for given constrains like spin or charge. So from energetic point of view, particle decay should be getting out of some local energy minimum by crossing some energy barrier and finally reaching some lower energy minimum - just like in thermodynamics (?) Energy required to cross such energy barrier usually comes from thermal noise - in case of particle decay there would be required some temperature of vacuum ... Generally the universe is built not only of particles, but also can …

Hi! I am so confusing about the topics covered in waves and oscillations section of physics I am not getting the physical meaning phase phi,what is phi why it is important what is the phase velocity etc..?. Please explain me these concepts.. Any help would be appreciated..

What do you think about my new idea of "Bending Inertia", an object travelling at any speed can change direction by gently bending inertia. This comes from my driving skill "The Perfect Driving Line." I invented/discovered in year 2000 that a car travelling at speed can change direction while maintaining the same speed and can change direction sharply greater than 90deg. While in the car your whole body experiences a new feeling/force which I have called "Paul's Force" after myself. Paul Griffiths, Bristol. England. I would call it "Griff Force", but my older brothers nick name is "Griff". Because of this invention/discovery I have invented a new car technolo…

I just was wondering if there were any estimates out there, my googling skills have failed on finding me a sufficient answer......

I had heard that a common solar panel has about 20 to 30 percent efficiency. The reason was, as I had heard, the electrons only consume the visible part of the electromagnetic spectrum and reflect the rest of the light waves. But why is that so?

I, as the author of a reformulation approach, am interested in a constructive feedback from researchers capable of understanding the issues in question and interested in resolving the old physical problems in electrodynamics. Feel free to discuss and contribute to developing this specific direction at http://groups.google.com/group/qed-reformulation Regards, Vladimir Kalitvianski.

One of the main reasons Physics debuck UFO's is no propulsion exist today that can do the things UFO can do.A UFO that can hover, fly over a city for hours , fly very slow than go at speeds nothing humans have invented that come close to that speed.A UFO that makes no noise or very quiet!! A UFO that cause all electronics to shutt off and cause cars to stop running and planes to shut off. And reports of some UFO crashes where by Physics debuck that advanced Alien race that can go from one star system to other and is millions of years advanced technology would not crash. No propulsion system can do any thing the UFO can do chemical propulsion,ion propulsion ,plasma…

Ok, so with electricity we have a charged particle creating an electric field, wherein a test charge further from a field-generating particle has a higher potential energy than a test charge closer to it, and so far this is analogous to gravity, in which case we have an object creating a gravitational field, and a test mass further from it has a higher potential energy than a test mass closer to it. In electricity, the test charge's ratio of potential energy to charge is known as electric potential. In gravity, I assume that analogous to this would be the ratio of gravitational potential energy to mass for a test mass, which would be the product of the gravitational c…

Let's say someone were holding an object (like a pencil) at a position away from the centre of mass, such that it would rotate from the gravitational torque if held still. Would there be a way to spin it (as in, about an external axis, while the line from the centre of mass to the pivot is in the same direction as the radius) such that the torque from the centripetal acceleration would just cancel out the gravitational torque?

Ok, so first off, angular momentum doesn't need to involve rotational motion, and a particle can have "angular momentum" with respect to an axis if it is moving in a straight line that doesn't pass through the axis, right? Also, if the particle had a constant speed and constant mass, then moving along the axis, its angle with respect to the axis would be perpendicular when the distance TO the radius is the lowest... does this imply that the angular momentum of such a particle would be constant? Also, as for the angular momentum of something thrown into the air... let's say we had a water bottle that was filled part way. It was thrown into the air such that its plane o…

Hi everyone, I have a question relating to gafferuk's but probably a more fundamental one. Don't get me wrong. My math skills are completely lacking in this area and I still haven't reached the chapter of trigonometry and vectors in my college algebra textbook. So please if you could provide an answer which is not mathematically rigorous as possible that would be appreciated. According to Newton's first law, it takes a force to make a massive object to start moving from a rest position. If an object starts moving by a force from a rest position, it will keep moving unless stopped or slowed down by some kind of force such as friction or gravity for example. …

Hi, I have two very specific questions. I was trying to read this paper : http://downloads.bbc..._connection.pdf and i noticed that equation 3 and equation A6 were different : Eq3 : L(t)=Q(t)/£(t) (not dimensionally correct) and Eq A6 : L(t)=Q(t)/£(t) * delta_t When you read under equation 3, you understand why this is like that ; they say : "As seen in Eq.(A6) of Appendix A, lifetime indeed has the dimension of time, being multiplied by the sampling time interval (which is here equal to unity–1 day)." Questions : 1/ Is it ok to have a dimensionally wrong equation if you say why in the text right next to it (i.e. number…

i thought that if the individual electrons in a current had its own magnetic moment, shouldn't negatively charged particles be also possess that property ?

can anyone pls explain me the working of an inverter....the battries in the inverter gives very high voltage but from inverter me get very less voltage supplies...how is it so???