Theorem (Casimir-force-derivative canonical): d/da of E(a) = -pi^2 hbar c / (720 a^3) gives dE/da = pi^2 hbar c / (240 a^4). [Note: chain rule of a^(-3) gives -3 a^(-4); with outer negative sign dE/da ends up positive.] However the force…
Theorem (Casimir-force-derivative canonical): d/da of E(a) = -pi^2 hbar c / (720 a^3) gives dE/da = pi^2 hbar c / (240 a^4). [Note: chain rule of a^(-3) gives -3 a^(-4); with outer negative sign dE/da ends up positive.] However the force…