YouTube: Perpetual Energy - How do you explain this?

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Perpetual motion and free energy schemes are fundamentally flawed concepts that violate the laws of physics. These ideas have been thoroughly debunked and are considered closed topics in the discussion forum. The community emphasizes adherence to posting rules regarding such topics. Engaging in discussions about perpetual energy is discouraged due to their scientific inaccuracy. The thread is nearing its conclusion, reinforcing the stance against these misconceptions.
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How do you explain this?
 
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Perpetual motion/free energy schemes are on our list of "closed topics"--they violate basic physics and have been debunked to death. Please refer to our posting rules, which are linked at the top of every page.
 
Thread 'Gauss' law seems to imply instantaneous electric field'

Thread 'Gauss' law seems to imply instantaneous electric field'

Imagine a charged sphere at the origin connected through an open switch to a vertical grounded wire. We wish to find an expression for the horizontal component of the electric field at a distance ##\mathbf{r}## from the sphere as it discharges. By using the Lorenz gauge condition: $$\nabla \cdot \mathbf{A} + \frac{1}{c^2}\frac{\partial \phi}{\partial t}=0\tag{1}$$ we find the following retarded solutions to the Maxwell equations If we assume that...
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Thread 'Do electron density waves accompany EM waves in coaxial cables?'

Maxwell’s equations imply the following wave equation for the electric field $$\nabla^2\mathbf{E}-\frac{1}{c^2}\frac{\partial^2\mathbf{E}}{\partial t^2} = \frac{1}{\varepsilon_0}\nabla\rho+\mu_0\frac{\partial\mathbf J}{\partial t}.\tag{1}$$ I wonder if eqn.##(1)## can be split into the following transverse part $$\nabla^2\mathbf{E}_T-\frac{1}{c^2}\frac{\partial^2\mathbf{E}_T}{\partial t^2} = \mu_0\frac{\partial\mathbf{J}_T}{\partial t}\tag{2}$$ and longitudinal part...
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