Recent content by tan99

Remember, it's the wavelength, not the amplitude of the light wave... If the aperture is smaller than the wavelength, there would be maximum diffraction - the central bright fringe would fill the entire screen!

Almost all physics or engineering textbooks have a table of the SI units that are based on six fundamental quantities. The one that is listed for the quantity "electric current" is always "ampere". However, usually a few pages past this fundamental table lies a definition of the ampere. 1...

nice insight! But i guess ur talking about the setting up of electric field as soon as the potential difference is created. And, by definition, current is the volume flow rate of the charge carriers across a cross section, which remains constant. By the way, the energy that is transferred as...

Thanks guys!...@K^2: Is the pressure differential is less across the larger area section because the flow is steady or the other way?

When charges are flowing (current) through a combination of conductors of different resistances in series, then why don't the charges flow faster(more current) in the material with lower resistance and slower(less current) in high resistance material? Why is the current same(steady) in the whole...