Ashish

So according to Quantum Theory, if light consists of a photon then photon will be the smallest particle towhich human can observed because human eye can see any thing if a light rays get reflected from any object or matter

I mean to say that if the method used for generating the electromagnetic wave is same as that of used in any transmitting radio signal.

Then now in this case if the frequency of generation of EM waves lies within visible spectrum then will their be light visible.

will I'll be able to see the corresponding visible light if I generate a electromagnetic wave whose frquency lies within the VISIBLE SPECTRUM or not

can u tell me little more on this

whats responsible for the odour for any material or substance or which property is responsible

Well thanks for the reply

and I've seen the video about which you are talking about

but can you tell the term used here "string " whats that

can anyone explain me the basic of String theory

Anotherother fun questions that a lot of teachers wont the awnsers to is: "If I shake this string then I get a wave of string but, what is light a wave of?", the awnser is that it isn't. Which really amuses me for some reason.

really thats the question which has disturbed my mind. And I'm to satisfied with you. And i'm in search of it.....................

But from the day I've learned about QM I think that there is nothing like a wave.

Hi everybody

Well I'm ashish from INDIA (Chhattisgarh,RAIPUR). I'm final year Engineering student from Information Technology branch.

When I was in 12th standard, at that time Physics was my favorite subject and till now. But when I studied physics in the foundation course of first year really I used to get confused by quantum meshanics, there used to be so much of problems regarding that what should I think Light as a wave or a particle.

And I have come up to a thought that there is nothing like a wave and its just a way of represention of various physical phenomenon

So from that time I have a very great enthusiasm about Quantum Mechanic and Modern Physics. For that I started referring to various type of books related to modern physics and Quantum Mechanics and even also Internet. And a few days are happening I've joined this http://www.scienceforum.net, and I've posted few threads regarding to which I used to have doubts and I'm thankful to various members for their reply, am I in the right direction or what please help me.

I mean to say that is there any small elementary particle which can be used as an integral one.

No I was saying that charge occur only in quanta i.e.

q = ne

so is there anything about mass quantization

As there is a charge quantization so as well for mass also or what?

Isn't it for Atomic Mass Unit

1 amu = 1.660538782(83)\times 10^{−27} kg

The elementary charge (symbol e or sometimes q) is the electric charge carried by a single proton, or equivalently, the negative of the electric charge carried by a single electron

It has a value of 1.602 176 487 × 10^(-19) Coloumb.

So is there any elementary mass

Unable to interpret it.

Well, the definition of what a wave is, is simple : Waves represent the spread of shaking in an elastic medium. And the spread of wave means nothing more than the transition of energy from one molecule to another.

 

They do exist, it is not an imaginary concept. Try ringing a bell in vacuum, you won't hear a thing! That's because waves need a medium. And depending on the medium they have different speeds.

Try ringing a bell in vacuum, you won't hear a thing! That's because waves need a medium. Can I assume that since there is vaccum ( a low pressure or a very less number of particles or matter), hence there are no particles thats why we are unable to hear i.e. there is nothing like a wave but we assume.

EM waves don't require a medium.

I have studied that EM waves have both electric and magnetic field components. These components oscillate at right angles to each other and to the direction of propagation, and are in phase with each other.

Since light is an electromagnetic wave, it is not affected by travelling through static electric or magnetic fields in a linear medium such as a vacuum. In nonlinear media such as some crystals, however, interactions can occur between light and static electric and magnetic fields - these interactions include the Faraday effect and the Kerr effect.

Mod note: posts moved/copied from vacuum thread

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That was something I was wondering, I assume that you can get photon-antiphoton pairs created...

Please tell me about antiphotons or it is just lik ean antiparticle of it.

That was something I was wondering, I assume that you can get photon-antiphoton pairs created...

Please tell me about antiphotons or it is just lik ean antiparticle of it.

Well OK I'm sorry if I've disturbed you.

And I've read many times http://en.wikipedia.org/wiki/Main_Page from many types of specific searches on articles and topic.

The question I posted here because When I read my Physics book, (Fundamentals of Physics, RESNICK, HALLIDAY) chapter on Waves there are many things which cause confusion.

How can a wave have energy please explain it?

really thats what I was thinking that real color perception in the human eye-brain system works much more complicated than simply assigning a color to every wavelength

The square root of their quotient.

Please clear it

What is responsible for the color of light?

1) Frequency

2) Wavelength

or any thing else

It depends on your definition.

 

If you define a "vacuum" as the complete absence of anything (matter and energy), then space is not that.

 

If you define a "vacuum" as an ALMOST complete absence of matter and energy, then yes... space is that.

 

Where are you struggling? What definition are you using?

OK then when we create a vaccum in a Lab then in which category will u place it