Polarlicht 4.1 / transistor - mission rosetta - philae - the remixes


Etymology. Aurora came from the Latin word for "dawn, morning light", since auroras were formerly thought to be the first light of dawn. Occurrence of terrestrial ...

The altitudes where auroral emissions occur were revealed by Carl Størmer and his colleagues who used cameras to triangulate more than 12,000 auroras. [14] They discovered that most of the light is produced between 90 and 150 km above the ground, while extending at times to more than 1000 km. Images of auroras are significantly more common today than in the past due to the increase in use of digital cameras that have high enough sensitivities. [15] Film and digital exposure to auroral displays is fraught with difficulties. Due to the different color spectrum present, and the temporal changes occurring during the exposure, the results are somewhat unpredictable. Different layers of the film emulsion respond differently to lower light levels, and choice of film can be very important. Longer exposures superimpose rapidly changing features, and often blanket the dynamic attribute of a display. Higher sensitivity creates issues with graininess.


Polarlicht 4.1 / Transistor - Mission Rosetta - Philae - The RemixesPolarlicht 4.1 / Transistor - Mission Rosetta - Philae - The RemixesPolarlicht 4.1 / Transistor - Mission Rosetta - Philae - The RemixesPolarlicht 4.1 / Transistor - Mission Rosetta - Philae - The Remixes

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