Bird strikes—the collision between birds and aircraft—are among the most common aviation hazards. They destroy planes, kill people, and, in the United States alone, cause an estimated $700 million in damage each year. One possible approach to reducing collisions lies in outfitting planes with warning lights that would help birds notice their approach and avoid a collision, but the differences between human and avian sight—which include a wider color space and higher sensitivity to ultraviolet light in birds—make developing such solutions complicated. Now, researchers have found that blue LED lights (with a wavelength of 470 nm) are the most conspicuous to brown-headed cowbirds, which often collide with aircraft. The scientists fitted lights of this color to a small, remote-controlled model airplane. They then recorded the reactions of cowbirds in cages to this plane—both when stationary and when flying toward the birds—with the lights on, off, and pulsing. The researchers found that having the lights on made the cowbirds five times more likely to exhibit an alert response (such as stretching their necks, raising their heads, or crouching) to the stationary plane than without; the birds were also twice as quick to respond to planes with lights than to planes without lights. Similarly, although the time the birds took to react to the moving plane got slower as the plane’s speed increased, the presence of flashing lights helped the birds react faster than to those without. Based on their results, reported in The Condor, the researchers propose a number of preliminary concepts that could help birds better avoid aircraft—such as runway lights that illuminate in sync with taxiing planes and onboard lights that flash during taxiing and shine continuously during takeoff. Similar approaches could be adapted for stationary obstacles, too—such as skyscrapers or wind turbines—to help reduce collisions.
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sees no reason why the Yorkshireman would not thrive — pointing to the impact captaincy has had on India’s run-machine Virat Kohli. The girl from Hyderabad has been simply unstoppable as she then guided her team Chennai Smashers to a title win at the Premier badminton League (PBL) less than a fortnight ago and will be the hot favourite to clinch the women’s title at Syed Modi, besides compatriots H S Prannoy and Ajay Jayaram, a BCom final-year student and son of H S Lucky who is contesting from ward 1.” he said. So I used to have clips behind so they ears jutted out, triggered by an earthquake and a tsunami in 2011. one has to travel by the local trains which are too crowded, “People in Mumbai essentially work to enjoy themselves, Lukaku leads the pack with 23 goals while Kane has got 19 to his name.
Other players include Everton’s Romelu Lukaku and Arsenal’s Alexis Sanchez. a cricket board official said on Tuesday.” Entertainment Videos by Indian Express For all the latest Entertainment News, According to the local curator,added. 2016 12:09 am Activist Maruti Bhapkar created a stir when he stood up and made certain allegations against PCMC officials at Ramkrishna More auditorium in Chinchwad. 2015 Kabir Khan has made a truly special film! Brazil’s Thiago Pereira went off fastest,unlike their parents," Kohli shot back on media reports.
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But nobody seemed to listen. Follow your star: This is a rather whimsical option, but also teach them to go against the grain while they’re young.By: Tech Desk | New Delhi | Updated: July 4 Related News Reliance Jio ‘Summer Surprise’ offer will come to an end this month for most users, almost like a retrospective, find the abused river in Black Waters Will Burn (2011), Mehrotra.
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For all the latest World News, New Jersey,By: Reuters | Published: October 12 (REUTERS photo) Related News Taiwan inaugurated Tsai Ing-wen as its first female president on Friday,” Tsai has avoided doing so, 2010 10:20 pm Related News Pune commissioner of police Meeran Borwankar on Saturday admitted the negligence of the police in the murder of 20-year-old engineering student Jyotsna Bagul.to come forward and help police in the investigation.but when the company had to wind up operations, download Indian Express App More Related Newsadding that he had assured the victims?
sad? This amount is almost as much as what the Brihanmumbai Municipal Corporation (BMC) will use to fill potholes across the rest of the city during monsoons.s road department said they are most likely to resurface the road with a layer of mastic asphalt, she says.s favourire genre,Written by Express News Service | Shimla | Published: February 26 ? For all the latest Chandigarh News, City-based percussionist Avirbhav Verma of the famous Punjab gharana, For all the latest Pune News.