But to
a pretty good approximation for current purposes, the photon just keeps on going, headed for space (or a GHG molecule, whichever comes first).
I reckon this is
a pretty good approximation of what the first batch of next - gen consoles will be capable of, but, if this gen is anything to go by, there will be a lot of optimization to happen.
The exact number per year for the last 200 years is unknown, but Heald and his assistants were able to arrive at
a pretty good approximation by relying on the number of titles available for each year in WorldCat, a library catalog that contains the complete listings of 72,000 libraries around the world.
But it is probably
a pretty good approximation, and once we make that approximation, we can make exact calculations.
Not exact matches
In the case of stock market returns, if you plug in the results of the first calculator you'll find that the
approximation isn't exact, but it's still
pretty good.
I can make a
good taste
approximation GF, but I miss those
pretty round loaves.
While that's a
pretty precise
approximation, a
better range estimate in a real world mix of city and highway driving will likely fall between 75 and 100 miles.
If Einstein ever did look at the rule of 72, he would have noticed that the
approximation is
pretty good between 3 % and 13 %.
The
approximation improves with increasing m but it's already
pretty good at m = 2
Wouldn't it be a
pretty good first
approximation to model a one square meter of earth and the atmosphere above it with average albedo, average solar input, average cloud cover, etc?
The work is an estimate of the global average based on a single - column, time - average model of the atmosphere and surface (with some
approximations — e.g. the surface is not truly a perfect blackbody in the LW (long - wave) portion of the spectrum (the wavelengths dominated by terrestrial / atmospheric emission, as opposed to SW radiation, dominated by solar radiation), but it can give you a
pretty good idea of things (fig 1 shows a spectrum of radiation to space); there is also some comparison to actual measurements.
It's an
approximation, but a
pretty good one.
Therefore, it appears that the linear
approximation looks
pretty good for small changes in forcing and fairly worthless for large changes.
For a steel shell close to sphere with the radius of the Earth, a parallel plane
approximation is
pretty good.