Recent content by Flying_Dutchman

  1. Flying_Dutchman

    Undergrad Length Contraction: Traveling in a Space Ship

    Suppose I'm traveling inside a spaceship at speed comparable to light between two points A and B. According to me the distance between the two points will be shortened due to length contraction. But actually my spaceship passes through every point between A and B so the distance measured by...
  2. Flying_Dutchman

    RS flip flop -- Replacing a NOR gate with an OR gate

    In the RS flip flops using a NOR gate if we replace the NOR by an OR gate all the outputs will be indeterminate. Both outputs Q and Q' will every time yield 1. Can you explain how the inputs 0 and 0 will give 1 1 as output
  3. Flying_Dutchman

    Transfer characteristic of this circuit

    When input is above 5V only this branch conducts because the diode will be forward biased . I tried using Kirchoffs voltage law to find the relation between input output voltages but for that i need current that is not given.
  4. Flying_Dutchman

    Transfer characteristic of this circuit

  5. Flying_Dutchman

    Graduate Electrodynamics: divergence of E in empty space

    del.E=P/e• which is one of the fundamental Maxwell's equation. We arrived at the conclusion that since there r no charges in free space because vacuum can't have any matter therefore del.E=0 . So isn't it wrong to conversely say that since del.E=0 there r no charges in free space when del.E=0...
  6. Flying_Dutchman

    Graduate Electrodynamics: divergence of E in empty space

    No I am talking about Maxwells equation in free space
  7. Flying_Dutchman

    Graduate Electrodynamics: divergence of E in empty space

    What is the physical significance of fundamental law del.E=0 in free space ?
  8. Flying_Dutchman

    Undergrad Are Dimensions Truly Relative to the Observer in the Coastline Paradox?

    A point is taken as an example of a 1D, a plane 2D and a sphere is 3D. If a point is viewed say at 1000x enlarged the point appears as a plane similarly if we a view a large sphere from very far it does appear as a dot. So can we say that dimension are relative to the observer ? Had our sights...
  9. Flying_Dutchman

    Undergrad Physical meaning of the equation E = - del V

    The gradient of a function gives a vector perpendicular to it's surface. So the equation reads electric field is the negative of the vector perpendicular to the equipotential surface. I know electric field and understand potential but I can't physically make sense for the above sentence how LHS...