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Understanding Quantum Mechanics

I have some problems in understanding quantum mechanics (as far as Richard Feynman is concerned that is not anything new). Because of wave nature of quantum particles, one can never measure position or any physical property with exact precision. If there is a wave function which describes probability of finding a quantum particle somewhere or better to say if you have psi = f(x) and you want know its value for some x, you need to know what x is, but since quantum particles lack exact position even after collapse of wave function how can x be found? If it can be found then quantum particle has exact position, if not x can never be found. What am I missing?

Asked Dario

Responses invited from experts in the field

A contraption to generate energy from moving vehicles

I’m thinking of making a contraption that can produce electricity by the ‘wind’ cars produce while the car is moving. My idea is that i build some cylidrincal contraption that can be fitted onto the light poles on highways so that the wind of the cars can rotate the cylinder. The cylinder consists of two layers. The inner layer is fitted onto the light pole with magnets and the outer layer consists of the copper coil that rotates to cut the magnetic flux to produce an induced current. My question is is there any way to let the outtrt layer rotate freely and how to connect the wires so that it wont get entagled when the outer layer is rotating. Thanks!

Asked Richard Foo

Higgs field and boundary of universe

 Is it possible that the Higgs Field does not extend to the edge of the expansion of the universe, and that there could be a ‘shell’ of ‘stuff’ from the bag bang that exist at the edge and is not seen because it lies outside of this field.

Would this ‘Stuff’ still effect gravity, even though we cannot perceive it as matter due to it lying outside the Higgs Field? Could this explain the missing ‘matter’ driving expansion, Dark Matter, or Dark Energy. It’s there, just beyond the Higgs Field.

Asked Brian Cole

Is the mass energy relation a universal truth

We all know E=MC2, matter is made of energy. So, I was wondering how we can be sure this is universally true.

Is it at all possible that matter might exist that is made up of other energy basis, such as time based, gravity based, Weak Nuclear Force based and so on.

Assuming these types of matter would not interact with the Higgs Boson, might they still exist but we cannot perceive them, like a magnet cannot perceive wood. Magnetic fields only recognize metallic based matter. Perhaps the Higgs Boson is like that, it’s field will not recognize matter based on things other than energy.

Asked Brian

Building blocks of space time continuum

Does spacetime comprises of any smallest “frames” units? E.g. Planck units? 

If so, how is it compatible with relativity? I.e. consider e.g. the twins “paradox” in which twin B returned younger than twin A, meaning after each Planck time unit – or any other natural unit contender – a smaller time unit passes for the other twin. Same goes for an atomic clocks, when clock A ticks 1 Planck unit, what did clock B ticked relative to it?

Asked Adam

Since it converges to zero, is it falty to conclude that spacetime is continuous?

The spin cycle in washing machine and Newton’s laws

Consider a washing machine. After the “wash” and “rinse” cycles, there is a “spin” cycle. Why? Why don’t we just let the water drain out from the bottom? Discuss these answers in terms of force and Newton’s laws of motion. Also, discuss the position of the clothes in the machine at the end of the spin cycle.

Asked  Abby Hasten

The spin cycle removes water from the cloths by centrifugal action

Putting the Shot and the Physics behind

Sot Put
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