Replying to a comment on:

Why you don't fall through the floor (Sonnet) by ?-Dave_Mysterious-?

Schrödinger’s equation: -(ħ²/2M)grad²φ(x,y,z) + Vφ(x,y,z) = Eφ( z,y,z) For a particle in a box: V = 0 if 0 < x,y,x < a = ∞ otherwise Try a solution of the form φ = Nsin(2πlx/a)sin(2πmy/a)sin(2πnz/a) Where N is the normalisation factor. φ must go to zero at x,y,z = a, therefore l,m,n are integers. So, E = -(1/2M)(2πħ/a)²(l² + m² + n²) Now, pressure P = ∂E/∂V And dV = d³a = d(a³) = 3a²da Therefore P = (1/3a²)∂E/∂a This is quantum pressure.

Everyone 9-Dec-03/9:58 AM
P.S Whether or not a man-shaped manhole cover could fall down a manhole is still a massive open question in the field of sewer research. For many years scientists believed that man-shaped manhole covers could always fall down the manhole if inserted in the "standing up" position. However, in 1981 this claim was refuted following the birth of a spherical man named Alex "Burgers" Turner, upon whom the X5 series of manhole covers were based. In fact, the X5 was the very first circular manhole cover to be used in Britain, and circular manhole covers have since been adopted as the industry standturd.




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