1,208 reputation
312
bio website knowing.net
location Kailua Kona, HI
age 50
visits member for 3 years, 2 months
seen 16 hours ago

Contributing Editor and Columnist, SD Times. Editor of now-defunct magazines including Software Development, Computer Language, and AI Expert. Founding Editor of Game Developer, which still totally rocks.

On Twitter at @lobrien

Sr. Software Engineer at Gemini Observatories.

Not a bad coder.


16h
accepted How does water carve rock?
Jul
2
awarded  Curious
May
15
awarded  Yearling
May
13
awarded  Popular Question
Apr
12
awarded  Popular Question
May
23
accepted What information about a meteor's trajectory, size, or height can be derived from a single location?
May
15
awarded  Yearling
Mar
25
comment Equation for the trajectory of a frisbee?
I trust that the robot with the most fun wins. Anything else would violate the Spirit of the Game.
Mar
25
asked What information about a meteor's trajectory, size, or height can be derived from a single location?
Feb
7
comment Is a hard drive heavier when it is full?
Lay question: what is the ">>" operator? I know two ways to read it ("much greater than" and "right shift bits") but I don't think either of those makes sense. Can you link to a layman-understandable explanation of either the operator or (even better) the equation?
Sep
27
awarded  Nice Answer
Jun
9
answered Direct observations of a black hole?
Jun
4
accepted How did Halley calculate the distance to the Sun by measuring the transit of Venus?
Jun
2
asked How did Halley calculate the distance to the Sun by measuring the transit of Venus?
May
15
awarded  Yearling
May
4
awarded  Commentator
May
4
awarded  Teacher
Apr
13
answered What are the chances that a deadly asteroid will hit Earth in the next decade?
Mar
4
comment Is it possible to make a hydrogen-alpha solar scope?
Great suggestion re. eBay although a quick search doesn't show any that are relevant for solar work. Typically, the etalon is placed at the front of the scope, before all the optics, but now one of the manufacturers is producing a telescope with an internal one -- you might enjoy reading this explanation luntsolarsystems.com/blog/internal-etalon-performance
Jan
26
accepted How bright are auroras (aurorae)?