If you have two identically functioning clocks, you can start them together, move them to different locations or along different paths, then when you physically bring them back together to compare, they will literally have registered different amounts of time. And , cosmologists are always talking about the age of the universe (a mere 13.80±0.02 billion years young).
When talking about the age of the universe we’re talking about the age of everything in it.
Like most official statistics the emissions data gets adjusted year after year, and often by 1 – 2%.
We won’t really know what our emissions were, or what the fall was, for years to come… Spot the effect of the Australian carbon tax in the graph of emissions by sector below. The falls in electricity emissions started long before the carbon tax (and probably have more to do with the global financial crisis, a government unfriendly to small business, and the wild subsidies offered for solar power).
Considering that our best estimates for the age of the universe are only accurate to within 20 million years or so (0.1% relative error), a few dozen millennia here and there doesn’t make any difference.
There are two ways to get clocks to disagree: the twin paradox and gravitational time dilation.
A new brief summary of the reasoning and evidence behind the skeptics case.
–Jo ——————————————— We check the main predictions of the climate models against the best and latest data.
Chemists are often interested in how fast a reaction will occur, and what we can do to control the rate.
The study of reaction rates is called kinetics, and we will learn about average reaction rate, rate laws, the Arrhenius equation, reaction mechanisms, catalysts, and spectrophotometry.
We can finally assess (sort of) the carbon tax in Australia.
It ran for two years from July 2012 to July 2014 and cost Australians nearly billion.
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