The term "real metric" is correct and usable in written English.
You could use it to refer to a measurement that is derived from actual data or observations rather than theoretical estimates. For example, "We used a real metric to measure the physical properties of the material."
Of course, for BT and Sky the only real metric that matters is whether people are giving up their subscriptions.
As ever, Berenson gives you something extra to think about: the real metric Microsoft wants Windows 8 to be measured by.
The other day, Chris Ward, the executive director of the Port Authority, which is supervising the project, stood three hundred feet in the air, on what will be the twentieth of One World Trade Center's hundred and four floors, and said, "This site will be understood by the public on how well this tower rises, but the real metric is how quickly the concrete gets poured".
This is a real metric and is going to be referred to as d d.
So this feature still remains a generic notion of brightness and cannot be transformed into a real metric for quantifying this dimension.
As I said, it's a simple idea and application, but it's potentially a very good idea to track trendy places based on a very real metric — people actually going to them.
The change of the real spacetime metric (g_{munu}) induces a change of the effective metric (mathfrak{g}_{ab}).
Under the action of the gravitational wave the real spacetime metric (g_{munu}) is transformed from the Minkowski flat spacetime metric to a spacetime including a small perturbation (h_{munu}), i.e. (g_{mu nu}=eta_{munu}+h_{munu}) (see [4]).
While in [9] we analyse the effect of changes in the real spacetime metric, in this case we consider the manipulation of the analogue gravity [15 18] metric, assuming that the real spacetime is flat.
The real spacetime metric of a gravitational wave is given by Eq. (1) and thus, the effective metric for the phonons is, (10).
Let ( X, d ) be a real valued metric space.
