And that geometrical prediction was confirmed directly by the Sloan survey, using the known distances of 500m light years to the density peak and 13 billion light years to the region where the microwave background originates as reference points to look for geometrical distortion, in the way that a more traditional land survey might use triangulation points.
Its main city, Portland, became the poster child of the "smart growth" movement by forcing up density, building an extensive light-rail system and restoring its urban core.
But it is possible to detect minute deviations in this signal, and these fluctuations - seen as mottling in the map - are understood to reflect the differences in the density of matter when the light parted company and set out on its journey all those years ago.
Light crudes have low wax content, with lower density and API viscosity.
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As they announced at the meeting in San Diego, the Sloan survey team was able to pick up such a density peak at a distance of 500m light years.
Without any intervention from politicians or environmentalists societies that progress have been using m ore fuels that have less carbon with higher energy density (1 kg of wood fuels a light bulb for 1 day, 1 kg of coal fuels a light bulb for 4 days, 1 kg of crude oil for 5 days, 1kg of methane for 6 days and 1 kg of uranium for over 140 years).
Heavy crudes (high wax content, high API viscosity, high density) cannot be refined efficiently by refineries geared to refine light crudes and vice versa.
The technological advance of thin and light flexible display has encouraged the development of flexible batteries with a high power density and thermal stability.
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If the gas sheet had the same density throughout, radio waves would pass through it without distortion, like light through a window pane.
Roasting coffee depends on different characteristics of the bean, density, shape, growing region..all these factors decide how dark or light the roast should be.
Sweet light crude oil yields the most gallons of gasoline per barrel of oil and since it has low viscosity and low density, it is comparatively inexpensive to pump, transport, and refine.
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