equations

The second paragraph continually mentions this “exact-solution” to the Einstein equations, which is of course, just as dubious a claim as it was the first time the author made it.

Bad Language: Metric vs Metric Tensor vs Matrix Form vs Line Element

The second paragraph continually mentions this “exact-solution” to the Einstein equations, which is of course, just as dubious a claim as it was the first time the author made it.

“Test of relativistic gravity for propulsion at the Large Hadron Collider”

The second paragraph continually mentions this “exact-solution” to the Einstein equations, which is of course, just as dubious a claim as it was the first time the author made it.

Objections to Kaku and Liu’s “How to Time Travel?”

Now, if the scientists who are investigating the density of the earth's atmosphere have also determined the rate at which this fell, the only unknown quantity that remains in their equations is the weight of that rocket carrier.

Sputniks

The choice of initial conditions, or boundary conditions, or the choice of particular values for the free parameters in the equations, is simply a way of picking out a particular model of a mathematical structure.

Lee Smolin and the multiverse

Schwarzchild found long ago the solution of Einstein equations for the metric around a fixed spherically symmetrical center-of-mass: ds2 = - (1-3m*/r) dT2 + (1 – 2m*/r) -1 dr2 + r2 (dθ+sin2θdφ2) …

Bad Language: Metric vs Metric Tensor vs Matrix Form vs Line Element

It seems to have just enough in the way of functional language structures that succinctly writing model equations is not too much of a chore.

What makes software engineering for climate models different? | Serendipity

In section on the Einstein equations, Verlinde assumes again an emergent spacetime and then uses the relativistic analogues for the equations in the Newtonian section to arrive at the Einstein Equations in the same manner.

“On the Origin of Gravity and the Laws of Newton” by Erik Verlinde

Solving the Navier-Stokes equations is notoriously difficult.

Archive 2009-03-01

The difficulty of trying to discover such optimum global solutions to the Navier-Stokes equations is compounded by the non-linearity of those equations.

Archive 2009-03-01