Month: July 2019

NASA Set To Launch a DeepSpace Atomic Clock Tonight

first_img Fusion Powered Spacecraft Could Be Just A Decade Away Related: This Is What 2 Dozen Satellites Look Like Packed for Launch on a SpaceX Falcon Heavy But how does it work? Astronomers already use clocks to navigate in space. They send a signal to the spacecraft, which sends it back to Earth. The time of that round trip tells scientists the spacecraft’s distance from Earth. That’s because the signal is traveling at the speed of light, so armed with the time it took to go to the spacecraft and back, finding distance is but a simple calculation away. By sending multiple signals over time, scientists can calculate a spacecraft’s trajectory — both where it was and where it’s going. But in order to know a spacecraft’s location within a small margin of error, astronomers need very precise clocks that can measure billionths of a second, according to NASA. They also need clocks that are extremely stable. “Stability” here refers to how consistently a clock measures a unit of time. While you’d think that clocks always measure the same length of time as a “second,” clocks have a tendency to drift and slowly mark longer and longer times as a “second.” For measuring the locations of spacecrafts in distant space, astronomers need their atomic clocks to be consistent to better than a billionth of a second over days and weeks. Modern clocks, from those we wear on our wrists to those used on satellites, most often keep time using a quartz crystal oscillator. These take advantage of the fact that quartz crystals vibrate at a precise frequency when voltage is applied to them, NASA said in the statement. The vibrations act like the pendulum in a grandfather clock. But, by the standards of space navigation, quartz crystal clocks aren’t very stable at all. After six weeks, they may be off by a full millisecond, which translates at the speed of light to 185 miles (300 kilometers). That much error would have a huge impact on measuring the position of a fast-moving spacecraft, NASA said. Atomic clocks combine quartz crystal oscillators with certain types of atoms to create better stability. NASA’s Deep Space Atomic Clock will use mercury atoms and be off by less than a nanosecond after four days and less than a microsecond after 10 years. It would take 10 million years for the clock to be wrong by a whole second, according to NASA. Related: A NASA Atomic Clock on SpaceX’s Next Falcon Heavy Will Pioneer Deep-Space Travel Tech It may not be surprising to learn that atomic clocks take advantage of the structure of atoms, which are composed of a nucleus of protons and neutrons surrounded by electrons. The atoms of each element have a distinct structure, with a different number of protons in the nucleus. While the number of electrons each type of atom has can vary, the electrons occupy distinct energy levels, and a jolt of exactly the right amount of energy can cause an electron to jump to a higher energy level around the nucleus. The energy required to make an electron do this jump is unique to each element and consistent to all atoms of that element. “The fact that the energy difference between these orbits is such a precise and stable value is really the key ingredient for atomic clocks,” Eric Burt, an atomic clock physicist at JPL, said in the statement. “It’s the reason atomic clocks can reach a performance level beyond mechanical clocks.” Humans To Mars? Here’s What We’ll NeedDava Newman, NASA Deputy Administrator, explains how solar-electric propulsion, deep space atomic clocks, spacesuits, and laser communication are key technologies for humans to explore Mars and beyond.Credit: NASAVolume 0%Press shift question mark to access a list of keyboard shortcutsKeyboard Shortcutsplay/pauseincrease volumedecrease volumeseek forwardsseek backwardstoggle captionstoggle fullscreenmute/unmuteseek to %SPACE↑↓→←cfm0-9接下来播放Better Bug Sprays?01:33关闭选项Automated Captions – en-US facebook twitter 发邮件 reddit 链接https://www.livescience.com/65777-nasa-launching-deep-space-atomic-clock.html?jwsource=cl已复制直播00:0002:3202:32Your Recommended Playlist01:33Better Bug Sprays?01:08Why Do French Fries Taste So Bad When They’re Cold?04:24Sperm Whale Befriends Underwater Robot00:29Robot Jumps Like a Grasshopper, Rolls Like a Ball00:29Video – Giggly Robot02:31Surgical Robotics关闭  NASA is set to launch an incredible new atomic clock into orbit on a Falcon Heavy today (June 24) in a technology demonstration mission that could transform the way humans explore space. The Deep Space Atomic Clock, developed by NASA’s Jet Propulsion Laboratory, is a space-ready upgrade to the atomic clocks we use here on Earth and to the clocks that already fly on satellites like those that provide GPS. Ideally, this new atomic clock will make spacecraft navigation to distant objects in space — on the journey to Mars, for example — more autonomous, NASA said in a statement. The precision in measurement of the spacecraft’s position that scientists hope to get with the Deep Space Atomic Clock will allow spacecraft traveling in deep space to act on their own, without much communication with Earth. It’d be a huge improvement to how spacecraft are currently navigated, NASA said. AdvertisementHow to Build the Most Accurate Atomic Clocks | VideoResearchers at the National Institute of Standards and Technology use laser-cooled cesium atoms to develop ultra-accurate atomic clocks for GPS systems, global telecommunications and other essential technologies.Volume 0%Press shift question mark to access a list of keyboard shortcutsKeyboard Shortcutsplay/pauseincrease volumedecrease volumeseek forwardsseek backwardstoggle captionstoggle fullscreenmute/unmuteseek to %SPACE↑↓→←cfm0-9接下来播放Better Bug Sprays?01:33关闭选项Automated Captions – en-US facebook twitter 发邮件 reddit 链接https://www.livescience.com/65777-nasa-launching-deep-space-atomic-clock.html?jwsource=cl已复制直播00:0005:0005:00Your Recommended Playlist01:33Better Bug Sprays?01:08Why Do French Fries Taste So Bad When They’re Cold?04:24Sperm Whale Befriends Underwater Robot00:29Robot Jumps Like a Grasshopper, Rolls Like a Ball00:29Video – Giggly Robot02:31Surgical Robotics关闭  NASA Wants Robots to Sniff Out Moon Pits for Astronaut Homes In essence, atomic clocks can correct themselves. In an atomic clock, the frequency of the quartz oscillator is transformed into the frequency that is applied to a collection of atoms from a specific element. If the frequency is correct, it will cause many electrons in the atoms to jump energy levels. But if it’s not, fewer electrons will jump. That tells the clock that the quartz oscillator is off-frequency and how much to correct it. On the Deep Space Atomic Clock, this correction is calculated and applied to the quartz oscillator every few seconds. But that’s not all that makes the Deep Space Atomic Clock special. This clock doesn’t just use mercury atoms, it also uses charged mercury ions. Because ions are atoms that have electric charge, they can be contained in an electromagnetic “trap.” This keeps the atoms from interacting with the walls of a vacuum chamber, a common problem with the neutral atoms used in regular atomic clocks. When they interact with the vacuum walls, environmental changes such as temperature can cause changes in the atoms themselves, and lead to frequency errors. The Deep Space Atomic Clock won’t be subject to such environmental changes, according to NASA, and so will be 50 times more stable than the clocks used on GPS satellites. After the clock launches today, scientists will be able to begin testing the clock’s precision as it spends days, then months in orbit. The Deep Space Atomic Clock will launch from Kennedy Space Center in Florida on a SpaceX Falcon Heavy rocket as one of two dozen payloads. The 4-hour launch window opens at 11:30 p.m. EDT (0330 June 25 GMT); visit Space.com tomorrow for complete coverage of the launch. How NASA’s Mars 2020 Rover Will Work (Infographic) Follow Kasandra @KassieBrabaw. Follow us on Twitter @Spacedotcom and on Facebook.last_img read more

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Congress has DNA of maximum corruption considers poverty political property Naqvi

first_imgnational elections SHARE SHARE EMAIL Indian National Congress SHARE Taking a swipe at the Congress over its proposed NYAY scheme, senior BJP leader Mukhtar Abbas Naqvi on Wednesday said the party which has a “DNA of maximum corruption” is talking about giving minimum income to the poor.Naqvi, addressing a public meeting in Rampur in Uttar Pradesh, alleged that the Congress and the SP-BSP want to make a “coalition of crime” in Uttar Pradesh.Canvassing for Jaya Prada, the BJP candidate from Rampur Lok Sabha seat, Naqvi said those who failed in the Congress-SP alliance in UP Assembly polls, are now undertaking the “acid test” through the SP-BSP alliance.“But neither their chemistry nor their physics match,” Naqvi was quoted as saying by a statement from his office.This alliance will also fail disastrously, the minority affairs minister claimed.Terming the Congress a “history-sheeter” in “making mockery of poverty”, he said the party should realise that “mountain of slogans” cannot get votes for it.Despite being in power for decades, the Congress did nothing for the poor, he alleged.Naqvi said Prime Minister Narendra Modi has worked for the welfare of the poor during the past five years.The Modi government has worked with a commitment to economic empowerment of the poor, he said.“The Congress, which has a DNA of maximum corruption, is now talking about minimum income,” he said, slamming the opposition party.Nyuntam Aay YojanaOn Tuesday, the Congress promised in its election manifesto to roll out a minimum income guarantee scheme — called Nyuntam Aay Yojana (NYAY), under which ₹ 72,000 crore would be deposited in the bank accounts of the poorest 20 per cent families in India, annually.“The Congress, which considers the country’s poverty as a political property will not allow the poor to come out of poverty,” Naqvi alleged.He claimed that the so-called mahagathbandhan wants a “contract prime minister”, and not a “perfect prime minister like Modi.They want a prime minister who can be “remote controlled”, he alleged.The people of the country don’t want a prime minister on “rotation and contract” for 6 months and then another prime minister for next 6 months, he said.The entire country knows Modi is the perfect prime minister for the progress, prosperity and safety of the country, Naqvi said. COMMENTS Uttar Pradesh COMMENT Alleges, despite being in power for decades, the Congress did nothing for the poor April 03, 2019 Published on BJP parliamentary candidate from Rampur, Jaya Prada with Union Minister Mukhtar Abbas Naqvi at an election rally after filing her nomination, in Rampur, on Wednesday, April 3, 2019.   –  PTI BJPlast_img read more

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KCRJagan bonhomie raises eyebrows in political circles

first_imgSHARE SHARE EMAIL 0 KCR’s national ambitions take a hit Polavaram project caught in political cross-fire as YSR Congress Government prepares to take charge RELATED COMMENT Published on COMMENTScenter_img The new-found bonhomie between K Chandrasekhar Rao and YS Jagan Mohan Reddy has raised eyebrows in political circles.Jagan and his family received a rousing reception from KCR at the palatial Pragathi Bhavan in Hyderabad, after he vanquished Chandrababu Naidu’s TDP in both Assembly and Parliament elections.Political observers said, KCR is not one who would walk the distance with political leaders unless he has a clear objective in mind. Not long ago, the YSRCP chief had vehemently opposed the struggle for a separate Telangana State and observed a fast unto death. Both proclaimed their intention to work together for the interest of the two Telugu States. KCR has accepted Jagan’s invitation to the latter’s swearing-in ceremony on Thursday in Vijayawada, too. They are expected to fly together to attend Prime Minister Modi’s swearing-in ceremony in New Delhi, the same day.Despite the landslide victories scored in the Assembly and Parliament by Jagan and the nine seats won by KCR, the duo ended up being more dependent on the Modi government, contrary to what they had expected. Even before the announcement of results, KCR went to town stating that the TRS and the YSR Congress will together win about 40 seats and emerge as a strong force at the national front.For KCR, Modi’s landslide victory has not only dashed his dreams of playing a key role at the Centre or leading a Federal Front that he proposed, but also his hopes to be in a position to get representation in the government by joining the NDA. With just nine MPs, the TRS has been marginalised. Meanwhile, Jagan is finding himself in a fix with many cases, and the State’s empty coffers, staring at him. Thereby, his dependence on the Centre is considerably more than vice-versa. Modi, during his thanksgiving speech in Varanasi, had referred to AP and Telangana and said, “the two States have not worked together to sort issues of the bifurcation, which was a major bungling by the Congress, even after five years. In comparison, the BJP-led NDA had split Bihar, Madhya Pradesh and Chhattisgarh, Jharkhand and there are hardly any issues”.The positive vibes between KCR-Jagan began just before the Assembly elections in Telangana. Jagan had announced that his party will not contest the elections and tacitly extended support to TRS. But Naidu’s intrusion into Telangana with the Praja Front alliance incensed KCR who decided to help Jagan to cut to size Naidu even in AP. Telangana May 29, 2019 SHARE national politics politicslast_img read more

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Cases related to harassment of dalits minorities increased in 2018 Govt

first_imgNEW DELHI: Five cases of alleged discrimination/victimisation of minorities and 99 cases of similar treatment to scheduled castes were registered across the country by National Human Rights Commission (NHRC) between April 1 and June 15 this year. In 2018, NHRC filed 79 complaints regarding harassment of minorities, with UP alone reporting 19 cases, and 672 cases of victimisation of scheduled castes, of which 46% were in UP. Minister of state for home G Kishan Reddy, replying to a query from Lok Sabha MP K Navaskani seeking details of complaints received by NHRC regarding harassment of minorities and dalits, said the number of complaints in respect of minorities had fallen from 117 in 2016-17 to 67 in 2017-18, before rising again to 79 in 2018-19. Similarly, the number of dalits alleging victimisation before NHRC fell from 505 in 2016-17 to 464 in 2017-18 before rising to 672 in 2018-19. State-wise, the highest cases of alleged harassment of minorities as well as Dalits were registered by NHRC in UP, which also happens to be the most populous state in the country. UP reported 19 cases of minority harassment and 311 of SC victimisation in 2018-19, up from 8 and 215 respectively recorded in 2017-18. Other states from where NHRC got complaints of minorities’ discrimination in 2018-19 were Gujarat (8), Tamil Nadu (7), Maharashtra and Haryana (5 each). As regards alleged victimisation of dalits, the maximum cases registered by NHRC between April 1 and June 15 this year were in UP (52). In 2018-19 too, UP topped the table with 311 cases relating toCases related to harassment of dalits, minorities rose in 2018: GovtSC harassment, though Rajasthan too reported 41 cases, Haryana 33 cases and Gujarat, 32. Download The Times of India News App for Latest India News.XStart your day smart with stories curated specially for youlast_img read more

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Put up traffic lights please

first_img Central Region MOTORISTS using Klang’s Bulatan Berkeley want the district Public Works Department (JKR) to install traffic lights at the roundabout to manage traffic flow and reduce accidents.Klang Consumer Association president Devadass Anjan said feedback from motorists mainly concerned the issue of safety at the roundabout caused by increasing traffic.“Within a radius of 850m to 1.5km from Bulatan Berkeley, there are public and private schools. We have school buses, Klang traffic and motorists from the Federal Highway and the New Klang Valley Expressway via Persiaran Bukit Raja and Jalan Batu Tiga Lama converging at the roundabout.“Most motorists, especially motorcylists, have told our association that it is difficult to navigate the roundabout during peak hours,” he said. Tags / Keywords: Lee says signalised traffic lights would control traffic and reduce the number of accidents.   Metro News 01 May 2019 Traffic light timing in Taman Sri Andalas cause of gridlock Users have complained that most motorists don’t give way and stay dangerously close to other vehicles at the roundabout.   “Almost everyone is in a rush. And if one motorist moves too slowly, the others blare their horns and this creates a stressful situation,” said Tan.Motorist C. Allan, 49, also said traffic lights would solve the congestion at the roundabout.“Many people don’t understand how to manoeuvre around a roundabout properly. They don’t use their indicators or stay in the correct lane when exiting, and this creates traffic chaos,” he said.Meanwhile, JKR head engineer Syaharidanisman Mohd Johanis said the department would need to conduct a study on the traffic volume before deciding on the best approach to regulate movement at the roundabout. {{category}} {{time}} {{title}} Related News Metro News 11 Jul 2019 Illegal unipole at Bulatan Berkeley to be dismantled Metro News 04 Jun 2019 Seremban-Kuala Pilah stretch of traffic lights temporarily deactivated Motorists are finding it difficult to negotiate Bulatan Berkeley as they exit from Taman Berkeley via Persiaran Rajawali. — Photos: AZHAR MAHFOF/The Star Devadass added that with motorists rushing and the high traffic volume during peak hours compounded by school traffic, the number of near misses and minor accidents had increased.He pointed out that the department should consider installing signalised traffic lights similar to the ones at Bulatan Seratus a few hundred metres away, which made it safer for regular motorists and those unfamiliar with the area to navigate. Tony Lee, 72, a resident at an apartment block overlooking the roundabout, told StarMetro that traffic lights would help improve safety at the intersection, especially during peak hours.A teacher at a nearby private school who declined to be named described Bulatan Berkeley as “scary” during peak hours.“Some drivers don’t give way and stay dangerously close to other vehicles.“I think if traffic lights were installed people would have no choice but to stop to allow other drivers to pass through,” he said.Resident SH Tan, 48, suggested that the police regulate the traffic in the area until a permanent solution is found. Related Newslast_img read more

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Seen dancing with guns Uttarakhand MLAs expulsion from BJP recommended

first_img Press Trust of India DehradunJuly 12, 2019UPDATED: July 12, 2019 23:50 IST Video of MLA Champion showing him dancing with guns went viral on social mediaHIGHLIGHTSState BJP in-charge made the recommendation to the central leadershipA notice served earlier to the MLA gave him 10 days’ time to explain his conductThe notice seeks an explanation from him why he should not be expelled from the partyState Bharatiya Janata Party (BJP) in-charge Shyam Jaju has recommended Pranav Singh Champion’s expulsion from the party even before the suspended Khanpur MLA could respond to a notice seeking an explanation from him on a viral video in which he was seen dancing with guns in his hands.Jaju, who is in charge of the party’s affairs in Uttarakhand, has made the recommendation to the central leadership, state Bharatiya Janata Party (BJP) media in-charge Devendra Bhasin told reporters in Dehradun on Friday.On a notice served earlier to the MLA which gave him 10 days’ time to explain his conduct, Bhasin said the state BJP will wait for the legislator’s response before making its recommendation to the party’s central leadership.The notice served to the MLA on Thursday seeks an explanation from him why he should not be expelled from the party.The party had also extended his three-month suspension for an indefinite period as a penal action.Champion landed himself in fresh trouble on Wednesday when a video showing him dancing with guns to a popular Bollywood number in front of cheering supporters went viral, leaving the party red faced.Also Read | Uttarakhand BJP MLA does Tamanche Pe Disco, stirs rowAlso Read | Pandey-monium in pink pants: Cops hunt for BSP leader’s son after 5-star brawlAlso Watch | Watch: Drunk BJP MLA Pranav Singh Champion brandishes guns while dancingFor the latest World Cup news, live scores and fixtures for World Cup 2019, log on to indiatoday.in/sports. Like us on Facebook or follow us on Twitter for World Cup news, scores and updates.Get real-time alerts and all the news on your phone with the all-new India Today app. Download from Post your comment Do You Like This Story? Awesome! Now share the story Too bad. Tell us what you didn’t like in the comments Posted byMohak Gupta Tags :Follow DehradunFollow UttarakhandFollow BJP Next Seen dancing with guns, Uttarakhand MLA’s expulsion from BJP recommendedThe notice served to the MLA on Thursday seeks an explanation from him explaining why he should not be expelled from the party.advertisementlast_img read more

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