This article is about the branch of Physics. For the Daft Punk song, see Aerodynamic (song).

Aerodynamics is a branch of fluid dynamics concerned with the study of forces and gas flows. The solution of an aerodynamic problem normally involves calculating for various properties of the flow, such as velocity, pressure, density, and temperature, as a function of space and time. Understanding the flow pattern makes it possible to calculate or approximate the forces and moments acting on bodies in the flow. This mathematical analysis and empirical approximation form the scientific basis for heavier-than-air flight.

Aerodynamic problems can be classified in a number of ways. The flow environment defines the first classification criterion. External aerodynamics is the study of flow around solid objects of various shapes. Evaluating the lift and drag on an airplane, the shock waves that form in front of the nose of a rocket or the flow of air over a hard drive head are examples of external aerodynamics. Internal aerodynamics is the study of flow through passages in solid objects. For instance, internal aerodynamics encompasses the study of the airflow through a jet engine or through an air conditioning pipe.

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NYT > Technology

AT&T’s Rivals Are Happy to Attack Over iPhone’s Network Woes
Fri, 29 Aug 2008 07:19:16 -0000
The debut of Apple’s iPhone 3G cellphones has been a public relations headache for AT&T, after complaints of dropped calls and poor network connections.
Bits: Does Silicon Valley Face an Innovation Crisis?
Fri, 29 Aug 2008 06:38:12 -0000
Judy Estrin, a serial technology entrepreneur, says in a new book that Silicon Valley — and the country — are facing a crisis of innovation.
Advertising: Cable, Quietly, Introduces an Anytime Elections Channel
Fri, 29 Aug 2008 07:39:02 -0000
The cable industry has introduced an experimental political channel that gives advertisers a uniform way to buy time and measure the number of people watching.
Results at Novell Are Better Than Expected
Fri, 29 Aug 2008 07:25:58 -0000
The business software maker Novell posted a quarterly loss but its results were better than expected, helped by an increase in sales of Linux software.
Dell’s Profit Drop Surprises Investors
Fri, 29 Aug 2008 07:23:12 -0000
Dell stunned investors with a 17 percent decline in quarterly profit and a warning that a slowdown in technology spending in the United States had begun to spread to Asia and Europe.
Industry Rethinks Moneymaking Software Practice
Thu, 28 Aug 2008 16:32:09 -0000
Before they ship PCs to retailers like Best Buy, computer makers get paid hundreds of millions of dollars to load them up with lots of free software. For $30, Best Buy will get rid of it for you.

NerdTV | PBS

NerdTV #13: Judy Estrin
Mon, 10 Apr 2006 12:00:00 -0700
Judy Estrin's career ranges from founder of Bridge Communications to CTO of Cisco to running Packet Design LLC. Quite the girl geek, eh?Download video:Entire Show:MPEG-4 | TorrentNerdy Bit:MPEG-4 | TorrentJuicy Bit:MPEG-4 | TorrentDownload subtitled video:Entire Show:With Subtitles | Torrent w/ SubtitlesNerdy Bit:With Subtitles | Torrent w/ SubtitlesJuicy Bit:With Subtitles | Torrent w/ SubtitlesDownload audio:Entire Show:MP3 | TorrentAAC | TorrentOgg Vorbis | Torrent
NerdTV #13: Judy Estrin - Transcript
Mon, 10 Apr 2006 12:00:00 -0700
For those who would rather read than watch or listen.
NerdTV Archives
Mon, 10 Apr 2006 12:00:00 -0700
Miss a past show? Check out our archives.Past guests include:#12: Bob KahnInventor of TCP/IP.#11: Doug EngelbartComputer mouse inventor.#10: Dan BricklinInventor of the Spreadsheet#9: AninaHigh Fashion Meets High Tech#8: Avram MillerCo-founder of Intel Capital#7: Dan DrakeCo-founder of Autodesk#6: Dave WinerFather of RSS and Web Logging#5: Tim O'ReillyOpen Source pioneer#4: Brewster KahleInternet Archive founder#3: Bill JoyCo-founder of Sun#2: Max LevchinCo-founder of PayPal#1: Andy HertzfeldThe first Macintosh programmer...ever

Reuters: Technology News

Microsoft to buy ciao.com price comparison firm
Fri, 29 Aug 2008 05:22:27 -0400
LONDON (Reuters) - Microsoft has agreed to buy Greenfield Online, owner of European price comparison website ciao.com, for about $486 million to boost its Internet search and e-commerce business in Europe.
HP says wins judgment against Pelikan
Thu, 28 Aug 2008 19:08:52 -0400
NEW YORK (Reuters) - Hewlett-Packard Co said on Thursday a German court has found Pelikan Hardcopy to be in violation of laws on unfair competition.
GeoEye signs deal to provide imagery to Google
Fri, 29 Aug 2008 05:10:03 -0400
WASHINGTON (Reuters) - GeoEye Inc on Thursday said it will provide imagery from its new $502 million high-resolution GeoEye-1 satellite to Google Earth and Google Maps after the spacecraft is launched on September 4.

AP Top Technology News At 7:06 a.m. EDT

Even critics give Apple a pass on iPhone 3G woes
By JESSICA MINTZ Thu, 28 Aug 2008 20:29:18 -0000
First an iPhone price cut left early buyers feeling foolish, and then came reports that some iPods were spitting sparks. Now the new iPhone 3G has been marred by bugs, spotty service, disappearing programs for the device and a veil of secrecy over software developers trying to broaden its appeal....
Small GPS devices help prosecutors win convictions
By MITCH STACY Thu, 28 Aug 2008 20:16:55 -0000
Like millions of motorists, Eric Hanson used a GPS unit in his Chevrolet TrailBlazer to find his way around. He probably didn't expect that prosecutors would eventually use it too - to help convict him of killing four family members....
Dell 2Q profit drops, hurt by PC price cuts
By JESSICA MINTZ Fri, 29 Aug 2008 11:10:47 -0000
Computer maker Dell Inc. said Thursday its fiscal second-quarter profit fell 17 percent, hurt in part by PC price cuts. Both earnings and margins fell short of Wall Street estimates, and Dell shares plunged....

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