How Airplanes Fly Please let me remind all of you--this material is copyrighted. Though partially funded by NASA, it is still a private site. Therefore, before using our materials in any form, electronic or otherwise, you need to ask permission. There are two ways to browse the site: (1) use the search button above to find specific materials using keywords; or, (2) go to specific headings like history, principles or careers at specific levels above and click on the button. Teachers may go directly to the Teachers' Guide from the For Teachers button above or site browse as in (1) and (2). Almost everyone today has flown in an airplane. Let us start by defining three descriptions of lift commonly used in textbooks and training manuals. The second description we will call the Popular Explanation which is based on the Bernoulli principle. The third description, which we are advocating here, we will call the Physical Description of lift. The popular explanation of lift Newton’s laws and lift Air has viscosity
EXCLUSIVE: Paul Walker's close friend shares intimate, never before seen pictures of the actor who 'was more interested in being a good father and a good son than an actor' Friends Ronn Shikari and Vince Krause said Paul Walker talked to his family about quitting acting so he could see his daughter more often Described the actor as fiercely loyal to his friends and lacking in arrogance associated with celebrities Another friend Ricardo Miller was Walker's Brazilian jiu jitsu instructor for almost 10 yearsHe traveled with the actor to movie sets to help coordinate fight scenesMiller took candid photos of the actor during their time togetherHe told MailOnline that Walker cared more about being a good father and son than about being a movie star By Chris White Published: 22:02 GMT, 7 December 2013 | Updated: 20:32 GMT, 8 December 2013 ‘Fast and Furious’ star Paul Walker was due to give up acting this year, so he could spend more time with his daughter Meadow. This is according to two of his closest friends, Ronn Shikari and Vince Krause, who both live in Hawaii. They were introduced to Paul seven years ago through their mutual love of jiu-jitsu.
Chemical Romance: How Hormones Influence Sex, Love and Relationships Photo Credit: shutterstock.com/umnola September 19, 2013 | Like this article? Join our email list: Stay up to date with the latest headlines via email. If legends of love potions and love antidotes tell us anything, it’s that ever since humans figured out they could love, they knew that love is a thing that comes from the body. In fact, much science has been done and much ink has been spilled over how human hormones regulate lust, attraction and long-term bonding. Well, that explains a lot. Here’s how the many chemicals flooding our system influence who we choose and how we feel. Step One: Desire You’re single. This stage is controlled by two hormones: testosterone and estrogen (women have testosterone too, albeit in smaller amounts than men). In other words, your body’s first reaction to a potential partner is, "Let’s make babies!" Step Two: Attraction This is where love gets more complex than a simple drive to get it on. Dopamine works to control our reward and pleasure centers.
- StumbleUpon Truly passionate sex beats obligatory makeup sex any day. Maybe men don't feel the difference, but we women do. We hate fighting—it makes us feel alienated, confused, and downright disappointed. But the next time we bite your head off, don't rush to pack up your CDs. You need to know what her fighting words mean. The Attention Fight Opening Volley: "We don't go out anymore." It Means: She's nostalgic. Battle Tactics: Once a month, surprise her with a real plan. What You Win: Dinner counts as foreplay. The Friends Fight Opening Volley: "What's with the morons in your fantasy baseball league, anyway?" It Means: She's questioning your judgment. Battle Tactics: When she disses your buds, it feels like a personal insult, because friends are directly tied to identity and ego. What You Win: Peace. The Money Fight Opening Volley: "Do you really need another gadget?" It Means: She's implying a lack of responsibility on your part. Battle Tactics: Schedule budget talks. The Intimacy Fight The Kids Fight
Khan Academy Fanfare fades as Apple rolls out its new line of iPhones Consumers looking for a way to measure how much excitement there is with the new iPhones that go on sale Friday may want to check out the TaskRabbit index. In recent Apple launches, busy consumers have turned to the San Francisco micro-job site to hire people to wait in line for the latest iPhone or iPad. Last year, 350 people were hired just in San Francisco and New York alone for the "line skipping" jobs. "This year, we've seen just over 250 people sign up to have a TaskRabbit wait in line for them in all of our 15 active markets combined," said TaskRabbit spokesman Johnny Brackett. The drop in the TaskRabbit index is just one indicator that the legendary enthusiasm among die-hard Apple fans is a bit damper this year for the new iPhone 5c and iPhone 5s. Wall Street analysts seem split on whether the new iPhones will set a record for first weekend sales, as each previous version has. Of course, consumers will have the final say this weekend. The wild card is China.
Ladies: Top Six Bedroom Sins Ladies, be honest: when your sèx life becomes a little humdrum, out comes the mental catalogue of all the ways your partner isn’t quite measuring up. Guys tend to get a bad rap when it comes to understanding women’s bodies and what turns them on, making them easy targets in the blame game when sèxual satisfaction starts to wane. And sure, they maketheir fair share of bedroom errors. But as the saying goes, it takes two to tango. As it turns out, top sèx and relationship experts say that women make plenty of sèx mistakes of their own. Sèx Mistake #1: Not initiating sèx with your partner Many women worry about lady like behavior. Most guys feel like they are always the initiator and that sets up disequilibrium on the passion scale in the relationship. Holding onto outdated ideas about sèx roles also inhibits satisfaction with our sèxual relationships. Show your interest by taking the first step from time to time. Don’t think about the fat on your belly or the makeup on your face.
Earth, Atmospheric, and Planetary Sciences | 12.409 Hands-On Astronomy: Observing Stars and Planets, Spring 2002 Jail Becomes Home for Husband Stuck With Lifetime Alimony Ari Schochet has grown so accustomed to being sent to jail for missing alimony payments that he goes into a routine. Before his family-court hearing, Schochet, 41, sticks on a nicotine patch to cope with jailhouse smoking bans, sends an “Ari Off the Grid” e-mail to friends and family, and scrawls key phone numbers in permanent ink on his forearm. Schochet, who said he worked as a portfolio manager at Citadel Investment Group Inc. and Fortress Investment Group LLC and once earned $1 million a year, has been jailed for missing court-ordered payments at least eight times in the past two years as he coped with the end of his 17-year marriage. The reason he ran afoul of the law was simple. “It’s a circle of hell there’s just no way out of,” Schochet said. Schochet and ex-spouses in similar changed circumstances say New Jersey’s law unfairly imposes lifetime alimony on them. Earning Power Relief may be on the way. Alimony Formula Connecticut Governor Dannel P. Far-Reaching Reform Group Lost Job
Anthropology | 21A.219 Law and Society, Spring 2003