774 reputation
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bio website coneslayer.org
location Pennsylvania
age 37
visits member for 3 years, 8 months
seen 12 hours ago
Unix geek in a Windows world

Jun
11
revised Current map of galaxies' z's and distances?
distance, not velocity
Jun
11
comment Current map of galaxies' z's and distances?
Good point, the HST Key Project was fairly local in scope. I have added another source.
Jun
11
revised Current map of galaxies' z's and distances?
Address comment
Jun
11
answered Current map of galaxies' z's and distances?
Nov
11
awarded  Yearling
Apr
2
awarded  Enlightened
Apr
2
awarded  Nice Answer
Dec
17
awarded  Good Answer
Nov
11
awarded  Yearling
Sep
10
awarded  Nice Answer
Nov
11
awarded  Yearling
Mar
4
comment Astronomical detection significance from magnitude error
This is correct in spirit, but note that most astronomical imaging systems are oversampled, so that an object (even a point source like a star) is spread over several image pixels. The overall significance of the detection is greater than that implied by the peak counts alone.
Mar
3
comment Can Jupiter be ignited?
Jupiter radiates through energy released due to gravitational contraction (that is, it's still shrinking). See en.wikipedia.org/wiki/Kelvin%E2%80%93Helmholtz_mechanism
Feb
25
answered Withstanding charlatans: How to protect friends from buying “water structuring facilities”?
Feb
25
comment Does ABS cause a force that resists turning a car into a corner?
If the extra traction on the inside front tire is used for braking, shouldn't that help the car turn? (In the limit, I'm thinking of the inside front tire "planting" firmly, and the car pivoting around it.)
Feb
25
comment How does a honeycomb grid affect the travel of light?
One thing I find helpful is to imagine myself sitting in front of the light (where the portrait subject would be). If you're looking straight down the "tubes" of the grid, you would see the blinding light directly, so you're brightly illuminated. If you move off to the side a bit, you no longer look straight down the tubes, and you just see softer light that bounces off the walls of the grid, so you're only weakly illuminated.
Feb
25
comment Conjectures that have been disproved with extremely large counterexamples
+1 because the universe is pretty big.
Feb
22
comment Electricity takes the path of least resistance?
As the responses indicate, current will flow through all paths, with more current flowing through the lower-resistance paths. But often when people say "electricity takes the path of least resistance," they're discussing a circumstance where the paths differ dramatically in resistance, such as a wet hand vs. an air gap. When one path has much, much higher resistance, practically all the current will flow through the other path.
Feb
22
awarded  Commentator
Feb
7
awarded  Editor