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India just saved its warships from being sitting ducks

Without advanced towed array sonar systems, all warships the navy has built and bought since the 1990s would be sitting ducks in war. Ajai Shukla reports On November 12, without announcement or......

Navy to buy AUVs for underwater surveillance

The Navy is planning to procure an Autonomous Underwater Vehicle (AUV) with onboard sonars and cameras for boosting its surveillance and reconnaissance capabilities under the sea. The Navy has......

Chinese sub, US sonar collision accidental: Report

A Chinese submarine's reported "inadvertent encounter" with an underwater sonar apparatus towed by a US destroyer in the South China Sea was probably an accident, the state media reported on......

Honouring the brilliance behind high speed WiFi and 4G

For developing technology that is at the heart of high speed WiFi and 4G mobile systems Arogyaswami Paulraj receives one of the highest honours in science, the Marconi Prize 2014.P......

Raksha Mantriji, you should read this!

An ill-informed public narrative centres on expensive weapons platforms instead of the little things that would improve capability. Ajai Shukla explains Going by the public statements made so far......

Kolkata 2006: a space odyssey

At the ITC Sonar Bangla, it's almost doubled. Average room rents in 2005-06 were in the range of Rs 4,000-Rs 4,500. This year, Ranvir Bhandari, area head, projects, east, expects the figure to......

Waste to wealth: ITC's success story

Anyone who has stayed at the swanky, 16-acre spread of the ITC Sonar Bangla in Kolkata will tell you that the energy requirements of the luxury hotel must be staggeringly high.\nEven so, when it......

Tesla's new Model S is insanely fast, has 'autopilot' mode

Photograph: Courtesy, Tesla Motors Tesla Motors Inc on Thursday took its first step toward automated driving, unveiling features that will allow its electric sedan to park itself and sense......

40 years ago and now: ITC struggles to kick tobacco

The conglomerate adopted an unremitting focus on diversifying from the mid-seventies but the exercise has not been without controversy and the results have been mixedTwo decades after joining......

Ratan Tata hits back, says Bengal FM has a 'very fertile imagination'

A day after  Ratan Tata said he did not see much sign  of industrial development in West Bengal, state industries and finance minister Amit Mitra hit back at Chairman Emeritus of Tata......

'Only Aamir Khan can do justice to Feluda'

For avid Satyajit Ray fans, it is impossible to get over the trance created by his unforgettable Sonar Kella, a film that tells the tale of brilliant sleuth Feluda aka Prodosh Chandra Mitter......

Telluride Film Festival: The Mecca for lovers of cinema

Aseem Chhabra celebrates 40 years of the prestigious Telluride Film Festival. On Wednesday, I'll be going home -- for the 20th time.  Since 1994, I have been taking an annual pilgrimage......

10 Satyajit Ray films that should be re-released

Satyajit Ray’s striking 1963 film Mahanagar has recently been digitally restored and re-released in British theatres. While critics there wax enviably about The Big City, we wanted to look......

'Soumitra Chatterjee has given his life to films'

Kahaani director Sujoy Ghosh grew up watching veteran Bengali actor Soumitra Chatterjee's movies, and not surprisingly, loves his works.Chatterjee has recently been awarded the prestigious......

The Very Best of Soumitra Chatterjee

A Dadasaheb Phalke Award is the least one could have asked for Soumitra Chatterjee.Still slogging it out on the studio floors, this 77-year-old actor has dominated Bengali cinema for years. Many of......

New Zealand cricket great digs in over ashes move

One of New Zealand's greatest cricketers is proving as difficult to shift in death as he was in life.Attempts to find and relocate the ashes of Bert Sutcliffe have failed because no-one recorded......

Bollywood meets cricket

There's much more than unflattering comments about Sourav Ganguly, Harbhajan Singh and Sunil Gavaskar in John Buchanan's book, 'The Future of Cricket: The Rise of Twenty20'. The former Australia......

Amid devilish times, a God lands in Kolkata

In the time of terror and gloom, a God -- undoubtedly on the football field -- has landed in India.When the rest of India was sleeeping, Diego Armando Maradona, the football icon, arrived to a......

'Sachin can easily play for another few years'

Aminul Islam will always be remembered as Bangladesh's first Test centurion. He attained the milestone in their first Test, against India in November 2000.Famously referred to as 'Bulbul', the......
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  People speak for sonar

  • QNA
uttar
Q. What Frank Whittle invented? A. Radar B. Ethyl gasoline C. Sonar D. Jet propulsion
Uttar:  A.  more

http://qna.rediff.com/questions-and-answers/what-frank-whittle-invented-a.-radar-b.-ethyl-gasoline-c.-so/27811108/answers/

Pardeep Kapoor
Q. Why bats always turn left when they leave a cave?
Pardeep Kapoor:  A. Jet Propulsion Engine more

http://qna.rediff.com/questions-and-answers/why-bats-always-turn-left-when-they-leave-a-cave/27700693/answers/27811110

Pardeep Kapoor
Q. Why bats always turn left when they leave a cave?
Pardeep Kapoor:  A. A common myth is that bats always turn left when exiting caves. This is one of those fun "facts" that shows up in trivia books Web sites,...... more

http://qna.rediff.com/questions-and-answers/why-bats-always-turn-left-when-they-leave-a-cave/27700692/answers/27700712

Nauty
Q. FFF-What Frank Whittle invented?a) Sonar b) Jet propulsionc) Radar d) Ethyl gasoline
Nauty:  A. A common myth is that bats always turn left when exiting caves. This is one of those fun "facts" that shows up in trivia books Web sites,...... more

http://qna.rediff.com/questions-and-answers/fff-what-frank-whittle-inventeda-sonar-b-jet-propulsionc-rad/26415227/answers/27700723

  Web results for Sonar
DRDO claims it is taking steps to make India self-sufficient in defence equipment

New Delhi, Dec.28 (ANI): The Defence Research and Development Organisation (DRDO) on Sunday said that the agency has set its sight to make India... ...

https://in.news.yahoo.com/drdo-claims-taking-steps-india-self-sufficient-defence-131825159.html
00 AM BAE Systems To Upgrade Royal Navy's Spearfish Heavyweight Torpedoes The UK MOD has awarded a £270 million contract to BAE Systems to upgrade the Royal Navys Spearfish heavyweight torpedoes

The UK MOD has awarded a £270 million contract to BAE Systems to upgrade the Royal Navy's Spearfish heavyweight torpedoes. Earlier this year,... ...

http://www.defenseworld.net/news/11707/BAE_Systems_To_Upgrade_Royal_Navy___s_Spearfish_Heavyweight_Torpedoes
56 PM Israel Navy To Be Trained On Dolphin-Class Submarines The Israel Navy is expecting to put two new advanced Dolphin-class submarines - INS Crocodile and the INS Rahav, into...

The Israel Navy is expecting to put two new advanced Dolphin-class submarines - INS Crocodile and the INS Rahav, into service in 2014. Submariner... ...

http://www.defenseworld.net/news/10362/Israel_Navy_To_Be_Trained_On_Dolphin_Class_Submarines
21 AM Thales To Supply Radar And Sonar Systems For Royal Malaysian Navy's LCS... Thales has won a contract to supply six SMART-S Mk2 naval surveillance radar systems and six CAPTAS-2 towed sonar systems...

Thales has won a contract to supply six SMART-S Mk2 naval surveillance radar systems and six CAPTAS-2 towed sonar systems for the Royal Malaysian... ...

http://www.defenseworld.net/news/10074/Thales_To_Supply_Radar_And_Sonar_Systems_For_Royal_Malaysian_Navy___s_LCS
Missing AirAsia flight is third Malaysia-linked incident

JAKARTA: The disappearance Sunday of AirAsia Flight 8501 was the third air incident this year involving Malaysia, where budget carrier AirAsia in... ...

http://economictimes.indiatimes.com/news/international/world-news/missing-airasia-flight-is-third-malaysia-linked-incident/articleshow/45667055.cms

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