Recent content by ravikannaujiya

thank you guys... :)

so, I think we are settled on that energy of light depends on amplitude in EM theory and on frequency in quantum theory. Now, please, could anyone tell me whether frequency of light in EM theory is same as frequency of light in quantum theory or not.

First its not my point its something conceptual that the book says... "Electromagnetic waves turn out to be a bit different. While the average rate of energy transfer in an electromagnetic wave is proportional to the square of the amplitude, just as for mechanical waves, it is independent of...

read page number 488 third line from above of Sear and Zemansky's University Physics 13th edition. Let me send a screen shot of the said paragraph.

That's true for mechanical waves.

Thanks for replying. I also think that there is no fundamental difference between them. But, I have asked the question because in Electromagnetic theory, energy of light depends on the amplitude of the wave but not on the frequency, while energy of light depends on frequency in quantum theory...

Are the angular frequency in electromagnetic waves and frequency of a photon characterise the same physical quantity? I know that these come under two different theory, but I want to know whether these names (angular frequency of em wave and frequency of photon) mean the same physical quantity...

ohk.. thanks.

yes I want that but not on the expanse of changing the state of motion and it only works in presence of gravity. However, thank you very much guys for replying, I think I got my answer. We cannot measure mass in Newton's laws without changing the state of motion of an object. and its almost...

First, if mass are different, force due to gravity is not same. Its only acceleration due to gravity is same, and that's why when we compare two masses in uniform gravitational field acceleration due to gravity cancels out from both side...so, here we have relative scale to measure mass using...

Balances use concept of gravitation force that's why pointer of a balance tilts towards the object with greater mass and it is not a universal instrument for the measurement of mass (as it doesn't work in space or in free fall). m1a1=m2a2. doesn't it smell like Newton's law. Let me reframe the...

because mass is a fundamental quantity so we must have a way to measure it irrespective of knowledge of force.

Hi! I have been searching for examples where mass can be measured without using Newton's law but I could not find one. Please explain, can we measure mass without using Newton's laws? How? PS: please don't explain using mass energy equivalence.

ohk...remove the removed by displaced...:)

As I understand, buyont force=mass of the water removed by ice * g now mass of water removed by the ice= volume of the water*density of the water since, volume of the water removed by the ice will be equal to the volume of ice itself. so mass of the water=volume of ice* density of...