Marcus

16 Flips | 1 Magazine | 8 Likes | 7 Following | 2 Followers | @marcusrosenlund | Keep up with Marcus on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “Marcus”

Free portrait lighting guide: 24 essential studio lighting set-ups

<i>Become a master of professional portrait lighting with these 24 essential studio lighting set-ups. Our free portrait lighting guide offers everything</i> …

10 Different Lighting Effects Using Just One Softbox

When you start out as a photographer, you probably don’t have a lot of equipment or money, so you need to come up with unique ways of using what you …

Film Posters

How to create HDR images using only Photoshop layer masks

Slide back and forth to compare<p>Creating an HDR image is typically involved with a quite time-consuming workflow that consists of merging, …

How to Avoid the 15 Common Mistakes People Make When Taking Photos

As a kinesthetic learner, when I face something new, I like to just jump in and get my hands dirty. So, more often than not, I will eschew the manual …

An Oddity

Gigaom | Twitter shows how the news is made, and it’s not pretty — but it’s better that we see it

Advertisement<p>Not long after the Boston Marathon bombings occurred on Monday afternoon, several Twitter users noted that these kinds of real-time news …

Science for Everyone

Faster-Than-Light Drive Instead of using rockets or thrusters, a craft equipped with warp drive would move by distorting space. The warp drive proposed by Miguel Alcubierre would achieve faster-than-light speeds by distorting space-time. The device would generate a field of negative energy that would squeeze or stretch space-time, creating a bubble. The bubble would ride the distortions like a surfer on a wave. As evidenced in the big bang, space-time can expand so quickly that objects move faster than the speed of light. 1) The vertical dimension represents how much a given volume of space-time expands or contracts in Alcubierre's model. Positive values [red] imply an expansion. When space-time expands behind a craft, it propels the ship forward. 2) Inside the warp bubble, neutral space-time would leave the ship undisturbed. Passengers would experience a gravitationally calm zero-G environment. 3) Negative values [blue] imply a contraction in space-time. The contraction balances the expansion of space-time as the bubble moves forward. THE OBSTACLES Negative Energy: Creating a warp drive requires negative energy—a mysterious form of matter that repels rather than attracts. While predicted to exist, it has never been measured in a laboratory, and known methods for creating it are extremely limited; they would generate so much positive (normal) energy that any negative energy effects would likely be drowned out. Faster-Than-Light Limitation: If scientists could generate a powerful field of negative energy, they would need to position some of it in front of the craft. “The problem,” says Alcubierre, “is that you wouldn’t be able to make this field reach the region you need.” In other words, to get the energy in front of the craft, it would need to move at faster-than-light speeds, which is impossible. Destabilization: Even if scientists could generate and position a field of negative energy, there is little reason to think the integrity of the field would hold. A group of Spanish and Italian researchers wrote a paper in 2010 arguing that quantum mechanical radiation, analogous to the Hawking radiation that appears at the event horizon of black holes, would show up and “inevitably lead to [the warp bubble’s] destabilization whenever superluminal speeds are attained.” Image: Watching Warp: If a ship with warp drive zipped past a stationary observer, according to a simulation by German researchers, he or she would see the drive’s effect on space, pinching as it approached [top], transitioning as it passed [middle], and dilating as the ship moved away [bottom]. Courtesy Thomas Müller and Daniel Weiskopf, based on Milky Way Panorama by ESO/S Brunier http://www.popsci.com/technology/article/2013-03/faster-light-drive

'Jurassic Park 4' flies in the face of science by cutting feathered dinosaurs

The <i>Jurassic Park</i> franchise is set to return next summer, but much has changed in our understanding of dinosaurs since Steven Spielberg's raptors first made audiences hold onto their butts back in 1993. It's now accepted that many of them were covered in feathers, for example, with dinosaurs' role …

Family dinners boost teens’ mental health - Futurity

MCGILL (CAN) — Regular family dinners are good for teens, even those who say they …

Mental Health

Meet the Man Who Owns the Moon | US News

The water on Earth came from a big collision with the moon, but that's not why the moon is now dry.(NASA/iStock)<p>If you ask Dennis Hope, he'll tell …

Image by Toon Hole.

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- Wes

'Ogooglebar' ... and 14 Other Swedish Words We Should Incorporate Into English Immediately

Swedish has proven particularly adept at inventing new words for new tech.<p><b>1.</b> <b>Bloggbävning, n.</b><p><b>2. Livslogga, v.</b><p><b>3. Ogooglebar, adj.</b><p><b>4. Nomofob, n.</b><p><b>5. Fulparkerare, n.</b><p><b>6. Mobildagis, n.</b><p><b>7. Appa, v.</b><p><b>8. Padda, n.</b><p><b>9. Terja, v.</b><p><b>10. Trädmord, n.</b><p><b>11. Attitydinkontinens, n.</b><p><b>12. Flipperförälder, n.</b><p><b>13. Åsiktstaliban,</b> …