aurora borealis over fairbanks alaska
Posted by Lee Petersen | September 27, 2020
What Causes the Aurora

A basic, yet comprehensive explanation of what causes the aurora. Tying together the solar wind, geomagnetic field, Van Allen belts, atomic energy states, and the electromagnetic spectrum.

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Posted by Lee Petersen | September 7, 2020
Plotting Simple Functions

The following are a few examples of how to create a simple plot in Matlab/Octave, Python3, and Julia. I made a similar look between all three programs, trying to keep...

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Ice Crystals in R-Channels
Posted by Lee Petersen | September 5, 2020
Ice Crystals in R-Channels

Photos and brief description of ice crystal growth in an R-channel, or Röthlisberger style subglacial channel in winter - Castner Glacier - Alaska Range

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Light Pillars
Posted by Lee Petersen | April 29, 2020
Light Pillars

A light pillar display over Fairbanks on a very cold January evening in Fairbanks, Alaska. This photo was taken from the University of Alaska near the Geophysical Institute. Typically the...

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SpaceX Falcon 9 Launch on January 6, 2020
Posted by Lee Petersen | January 7, 2020
SpaceX Falcon 9 Launch

SpaceX Falcon 9 Launch from Kennedy Space Center in Florida. Photos from the night launch viewed over the Indian River.

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