Recent content by HeilPhysicsPhysics

  1. H

    Is the Derivative of (1+1/x)^x Always Positive?

    y=(1+1/x)^x Let u=1+1/x,y=u^x y=u^x ln y=x ln u y'/y=x/u dy/du=[x/(1+1/x)](1+1/x)^x =x(1+1/x)^(x-1) du/dx=-1/x^2 dy/dx=(dy/du)(du/dx) =x(1+1/x)^(x-1) (-1/x^2) =-(1+1/x)^(x-1) /x
  2. H

    Explaining the Meaning of "Flux" in Electromagnetism

    I don't understand what is the meaning of "flux" .I just know it has some relation between eletromagnetism.Please explain what is flux to me.
  3. H

    Exploring the Physics of Going Through Walls

    Why there is a probability to go through a wall?
  4. H

    What meaning is divergence and curl?

    What meaning is divergence and curl in physics?
  5. H

    Why do we think particle is wave and probability also wave?

    But why we call it "wave"? And is its amplitude mean probability?
  6. H

    The product between quaternion

    Just like: A=i+j+k B=2i+3j-4k They are both vector. I heard that a vector times a vector become a tensor(rank two). If ij=-k,ik=-j,jk=-i. The product is: (i+j+k)(2i+3j-4k)=-2-3k+4j-2k-3+4i-2j-3i+4=i+2j-5k-1 I think it is still a vector, not a tensor(rank two).
  7. H

    How to prove e^ix=cos x + i sin x

    How to prove e^ix=cos x + i sin x
  8. H

    What method to calculate intergration?

    For example Intergrate (uv dx)=? Intergrate (u dx/v)=? Intergrate (u^v dx)=? Intergrate (log_u v)=? Where u and v are the function of x. Is there any method in intergration just like dy/dx=(dy/du)(du/dx) in diffrentiation?
  9. H

    What is a blackbody?What special of its radiation?

    What is a blackbody?What special of its radiation? What relation between blackbody radiation and quantum theory?
  10. H

    Why do we think particle is wave and probability also wave?

    Why do we think particle is wave and probability also wave? If probability is wave,what is its wavelength,frequency,amplitude,period?
  11. H

    What meaning is divergence and curl?

    What does a divergence calculate? What meaning is it for a vector? And also what is curl? Why we have to definte divergence and curl?
  12. H

    The product between quaternion

    For example: i^2=? j^2=? k^2=? ij=? jk=? ik=? ijk=? Is ij=ji? And how to prove them? And also,vector times vector, what is the product?
  13. H

    Electric and magnetic constants are tensors

    Tensor is a general vector.
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