HONG KONG, June 16 (Xinhua) -- The second time detection of gravitational waves was announced Thursday, while the only Hong Kong scientist, Tjonnie Li, in the study team expects more breakthroughs to come.
The Laser Interferometer Gravitational-wave Observatory (LIGO) Scientific Collaboration and the Virgo Collaboration announced Thursday that gravitational waves were detected for the second time on Dec. 26, 2015 at 03:38 a.m. (UTC) by both of the twin LIGO detectors, located in Livingston, Louisiana, and Hanford, Washington, USA.
Li, a physics professor from the Chinese University of Hong Kong, has participated in the LIGO Scientific Collaboration research since 2009, said, "The detection of gravitational waves is not a once-in-a-lifetime occurrence, but instead is something that physicists can look forward to seeing frequently in the future."
The first detection of gravitational waves, which was announced on Feb. 11, 2016, confirmed a major prediction of Albert Einstein's 1915 general theory of relativity and marked the beginning of the new field of gravitational-wave astronomy.
The black holes found in the second discovery were much less massive than those observed in the first detection. Due to their lighter masses compared to the first detection, they spent more time, about one second, in the sensitive band of the detectors. This can help scientists to map the populations of black holes in the universe.
Li said earlier that a new era in astronomy has begun due to the discovery, describing it as a turning point in science. "I believe there will be more breakthrough discoveries down the road."
The university has recently signed a memorandum of understanding to become the first Hong Kong member of the LIGO Scientific Collaboration and began a formal collaboration this March.
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SINGAPORE, June 13 (Xinhua) -- Singapore's Prime Minister Lee Hsien Loong has written to U.S. President Barack Obama to convey his condolences on the shooting in Orlando on Sunday, announced the Ministry of Foreign Affairs (MFA) in a statement on Monday afternoon.
Lee wrote that he was ""deeply shocked and saddened"" by the tragic shooting in Orlando, Florida over the weekend, resulting in the loss of many innocent lives and injuries to many more.
Lee also offered the deepest condolences to the victims and their families on this horrific tragedy on behalf of the government and people of Singapore. He stressed that ""nothing can excuse such brutal and senseless acts of violence.""
Singaporean leaders on Monday also expressed condolences over the early Sunday attack, the deadliest mass shooting in U.S. history. Enditem
" " A farmer in Tianzhu County of Southwest China's Guizhou Province has preserved three powerful antique bows. (Photo
A farmer in Tianzhu County of Southwest China's Guizhou Province has preserved three powerful antique bows that have a shooting range of 500 meters Cheap Men's Nike Air Max 95 Black Anthracite UK , a local news portal reported.
Wu Zhanwu, resident of the county's Panzhai Village, said he is the fourth generation to inherit the weapons in his family Cheap Nike Air VaporMax 97 Summit White UK , which has a long hunting tradition. Each bow weighs about four kilograms and is about 1.6 meters long.
The 61-year-old keeps the bows high and out of reach in his house and warns visitors not to walk under them because ""it will offend the gods"".
Wu said he remembers his father and grandfather killed a tiger when he was about 6 years old. But he didn't see first-hand if they killed theit with the bows.
Wu's family is known in the village to have a mysterious tiger-hunting book that details procedures such as taboos, code words and incantations. Some villagers also said the bows helped them survive famine in the past.
""My family killed 14 tigers and numerous other wild animals in 1957 when my sister was born,"" said Wu.
His Miao village is scattered across the mountainside with about 100 households.
" Finance > Insurance > Home InsuranceReasons to Install Outdoor Awnings in Your Home
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