Classical Physics

Do you think that there is vacuum in Earth's atmosphere? I think there is. Look at the diagram below: This is the molecular arrangement in gas, liquid and solid. We can say that the first jar represents the atmosphere of the Earth. If the air molecules in our atmosphere are arranged like this, there should be lots gap between them. What is there in this gap? If there is nothing in this gap, then there should be vacuum. So there should be vacuum in air.

Please read and discuss whether my theory is right and acceptable: Here, Singularity before the Big bang = S Static Universe = sa Big Crunch = bc Unlimited expansion of Universe = eu …

Hello there, my first post! i really want a small tesla coil - but hearing that merely having one in the same room as a computer can kill it - including you, also the large price / risk involved in making one so i've gone a step down and i really want a large plasma ball! the only problem is that they - cost - LOADS! specially the large ones, so i was thinking, i can pick up a cheap little one for around £10.00, what would happen if i were to get a cheap plasma ball, dismantle it and put the "core" of it into another glass object - say a large bottle or something similar, does it have to be a vaccuum/special gas inside (i suspect it's argon or neon in there) …

carnot's theorem for an ideal heat engine does have a proof but some points are out of comprehension.could you please provide me with an answer?

I wish to know if there is any attempt to describe physical nature of electric field. Magnetic field seems to be due to the relativistic effect when the charge is in motion. What is physical picture and difference between electric field, magnetic field and electromagnetic waves? Also if there is vacuum between two charges then what leads to force at a distance and how? May be there is no perfect answer to these fundamental questions but I wish to know if anybody has attempted to answer.

Is it necessary for the second law to hold that the first law holds too? Thanks

When we flow electrons through the copper wire, the magnetic field is generated. But I' m curiously about the condition which electromagnetic waves leave the copper wire. The wave is called radio wave. How the electromagnetic wave to leave the copper wire?

I was wondering if Joule's law can be derived from Maxwell's equations, and if so, how?

I am looking to find a way to make two harmless Class 1 lasers collide to create a dot in mid air. My theory (completely un-scientific you understand) is that a laser will carry on forever until it's stopped, but that at Class 1 the beam (body) itself is invisible from the naked eye without particulates. However the dot is always seen, this of course when hitting an object that absorbs light. My theory was that if I could collide two lasers then they would be cut off and as they strike would form a dot in mid air. Now, I've been told that photos do no such thing, no collision and thus no mid air exposure. I've not tried it myself as I only have one red dot Class 1 las…

Just browsing the internet for cool physicsy stuff i came accross this: "New "Flying Train" prototype: Apart from aerodynamic drag, trains usually suffer from mechanical resistance in their drive system as well as rolling resistance from the wheels on the track. Researchers at the Kohama Laboratory, Institute of Fluid Science at the Tohoku University in Japan (link) tried to lower overall resistance by adapting another aspect of aerodynamics on its Aero-Train concept. Using the aerodynamic wing-in-ground (WIG) effect, the Aero-Train is able to fly above the track at a height of 10 centimetres (4 in). The WIG effect occurs when flying very close to the surface.…

So my neighbor has what I assume is HAM radio and a huge ariel outisde his house; I'm assuming HAM, could be Citizens Band but i don't know enough about it to tell the difference. Anyway I use my computer rather regularly and all i can hear instead of what should be coming out of my speakers is really loud chatter from his signal. Its very annoying and so I was considering wrapping my speakers in aluminium kitchen foil to botch up a kind of faraday cage but i'm skeptial if this would help? Any ideas? do you need more info? Regards

To compress one litre of refrigerant gas, from atmospheric pressure to say 100 psi; takes X amount of energy To compress one litre of air, from atmospheric pressure to say 100 psi; does it take the same amount of energy ? In the examples above, none the gases will become liquified at a condenser; just cooled to ambient temperature. If both gases take the same amount of energy for the task; why air is not a good to use as refrigerant gas yielding a poor coheficient of performance COP ? If both gases take different amount of energy for the task; is the one that will take less energy the one that will be a poorer refrigerant ? Would a good refrigerant gas…

Read Wikipedia: do not know what causes the photon. I have discovered, that makes it, the same particle that moves a wave of mobile phones. The Veegtrón moves when he is a radio wave. And the Veegtrón shines when it is a wave of short microscopic circuit. The Veegtrón is that produces the photon when it shines. And the Veegtrón produces radio waves moving. Very affectionate Victor Elias Espinoza Guedez June 10, 2011

Coaxial metal disks counter-rotating through an axial magnetic field would have opposite radial currents due to the Lorentz force. Therefore they would become oppositely charged. Although the voltage of Faraday disks is small, the current is large (they are used for rail guns and welding), so across the gap between the disks would be a high electric field. Since the disks are both spinning, incipient arc ends would be continuously pulled apart so power density would not erode the disks. Electrical and mechanical energy in large amounts could be coupled into the molecules between the disks by this dynamic capacitor. The electric field holds them, and the shear tears t…

Some of the following is more or less Halliday & Resnick, 4th Ed., section 9.8 (not the whole section and I added a lot): Assume motion in a stright line. Therefore, for position, velocity, acceleratiom, force, momentum, etc., d/dt|vector|=|d/dt(vector)|. This is not true in general for motion along a curved path. Assume we have an idealized rocket of mass m and speed |v| at time t traveling in the forward direction relative to an inertial reference frame. The rocket then instantaneously begins to emit a constant stream of exhaust in the backwards direction. let: F_net_ext = net external force = net force on (rocket + exhaust) = sum of gravity, atmospheric dr…

would the 'cooling' section of this page: http://en.wikipedia.org/wiki/Canned_air work with carbon dioxide as the propellant? (i know carbon dioxide is used as an aerosol propellant in cooking spray cans) or does it only work with the chemicals they use?

According to Einstein, the sum total of all of my motion equals the speed of light. With that in mind, I would like to know what types of motion I am experiencing as I sit here at my desk. I know that I am traveling through time, that the Earth is spinning on its axis, that the Earth is orbiting the Sun, that the sun is orbiting the Galactic Centre, that the Milky Way Galaxy is in some form of motion, and that the Universe is expanding. Is that all correct? Have I missed anything? Does the expansion of the Universe count as a type of motion that I am experiencing?

hello guys, i have tried to build an alternator which also doubles as a magnetic thrust bearing here is the rotor: the inner 6 magnets are all facing the same way, and the outer 6 magnets are all facing the opposite way, this creates a 'horseshoe' magnetic field in a zig-zag pattern around the circle of the rotor... the 'star' is made out of mild steel and is acting as the 'magnetic flux conductor' here is the base: similarly, the outer ring of magnets are oriented in the opposite direction from the inner magnets, and the large flat disc is also made of mild steel... this is actually supposed to act as 2 large concentric magnets instead of 2 rings o…

would it be possible to induce pyrolysis of plant material in my microwave oven?

I am A programmer And made a server and client that both run at 30 frames per second. the server counts down (99,98,97,96 so forth ) and sends values through the internet at 30 times a second so I opened the client Put the it next to the server so I could see both values at the same time as you would expect The client had a slight delay but when the server just turned to 96 the client had already had the value 95 that shouldn't be possible the client doesn't count it just reads values and displays Did I break the laws of physics? or am I not seeing something?

Please settle this "argument" between a fellow cyclist and I. If I am riding east up and over a pass will I use the same amount of energy as if I rode the opposite direction? His argument is that going from west to east, the climb is steeper so it is harder. I countered that it doesn't matter which direction you are going because the same amount of energy is stored and then released (potential and kinetic) as long as the vertical height you are "moving" the weight up is the same. You might go slower up the steep side but you will get there at the same time (theoritically). Neither direction is impassable meaning the rider has the power to climb them using different …

How accurate are mirror images of the face? I ask this because if one looks in the mirror, one's images reverses. Does the reversal have an effect on the accuracy in showing our face? They have manufactured mirrors that show non reversed images of yourself -- I wonder how an image from one of those mirrors would differ from the image seen from the normal mirrors we encounter everyday -- would there be a significant difference or none at all?

Electric field lines kinda confuse me!!! Teacher told me that inside a conductor, the electric field is zero. But i wonder why? And also if it is zero inside the conductor then why are there still electric field lines outside a conductor?

hello, while watching blitz street last night, i noticed that even with no confinement, tnt still created a large blast as opposed to the large woosh of flame like you get from black powder, what actualy causes this?

Hi guys and girls, new here, been pulling my hair out trying to work out the answer to this one with nothing but a physics gcse which was a rather long time ago, i'm feeling a little pickled! I'm probably about to set myself up to look like an idiot but here goes, quick simple question: In an enclosed vessel, what pressure is required to increase the temperature of the air within the vessel to 200 degree Celsius? The other thing i might as well drop in here for anyone with the knowhow, how realistic is it to create whatever pressure that is required, by hand? Just trying to formulate a concept design, i'd hire someone with the education if i had the money, b…