JohnnyDanger - Slashdot User

Comment Re:Cheaper astronomy (Score 1) 59

by JohnnyDanger on Sunday May 30, 2010 @08:18PM (#32401768) Attached to: SOFIA Sees Jupiter's Ancient Heat

NASA has active balloon and sub-orbital rocket programs.

For infrared/sub-mm astronomy see, for example:
http://en.wikipedia.org/wiki/BLAST_(telescope)
http://en.wikipedia.org/wiki/BLAST!_(movie)

Comment Re:Neat video, but not very accurate (Score 5, Informative) 88

by JohnnyDanger on Monday August 10, 2009 @09:22PM (#29018511) Attached to: Nearby, Recent Interplanetary Collision Inferred

The impact on Mercury which created the Caloris basin caused some wacky geology at the antipodal point to the collision. This is called "chaotic" or "weird" terrain. Link.

Comment Limb darkening (Score 5, Informative) 161

by JohnnyDanger on Sunday May 17, 2009 @09:22AM (#27986169) Attached to: Shuttle and Hubble Passing In Front of the Sun

The edge like that because you see a shallower, thus cooler, portion of the sun's photosphere. As a cooler source of blackbody radiation, it looks darker and more orange. The phenomena is called limb darkening.

http://en.wikipedia.org/wiki/Limb_darkening

http://en.wikipedia.org/wiki/Black_body

Submission + - Intel open-sources multicore programming toolkit (arstechnica.com) 1

Submitted by Doctor Memory on Tuesday July 24, 2007 @06:30PM

Doctor Memory writes: Intel has recently open-sourced their previously closed-source TBB 2.0 (Thread Building Blocks) C++ library. The library provides parallel algorithm templates for "task-based parallelism", emphasizing logical tasks instead of physical threads. The web site (osstbb.intel.com) hosts an FAQ, a forum link, and a download page to get the latest version of the source. Licensed under GPLv2, Intel will continue to sell a commercial version of the library which will include engineering support. There's a more in-depth overview over at Ars Technica.

Submission + - Cisco issues public fix for iPhone flooding (networkworld.com)

Submitted by whitehartstag on Tuesday July 24, 2007 @03:42PM

whitehartstag writes: Cisco has issued a public fix and detailed workarounds to its wireless LAN network bug that caused Duke University's WLAN to flood after being triggered by a couple of iPhones.
http://www.networkworld.com/news/2007/072407-cisco -security-fix-duke-wlan.html

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