News That Matters

Tag: gold

Scientists witness huge cosmic crash, find origins of gold

Scientists witness huge cosmic crash, find origins of gold

Technology
It was a faint signal, but it told of one of the most violent acts in the universe, and it would soon reveal secrets of the cosmos, including how gold was created. Astronomers around the world reacted to the signal quickly, focusing telescopes located on every continent and even in orbit to a distant spot in the sky. What they witnessed in mid-August and revealed Monday was the long-ago collision of two neutron stars — a phenomenon California Institute of Technology's David H. Reitze called "the most spectacular fireworks in the universe." "When these things collide, all hell breaks loose," he said. Measurements of the light and other energy emanating from the crash have helped scientists explain how planet-killing gamma ray bursts are born, how fast the universe is expanding, and where h
Microlasers get a performance boost from a bit of gold

Microlasers get a performance boost from a bit of gold

Science
Oct. 6 (UPI) -- Scientists have boosted the efficiency of microlasers using tiny gold particles, thus expanding the technology's real-world application possibilities.Researchers at the University of Southern California were able to create a tiny, energy-efficient frequency comb by attaching gold nanoparticles to the surface of a tiny laser.Frequency combs create a rainbow of light frequencies from a single color. The technology is used in a variety of fields, but is most often employed as a sensor capable of measuring the spectral properties of tiny targets, like potentially harmful chemicals.Today, the best commercial frequency combs are prohibitively expensive and require larges amounts of power, limiting their potential outside the lab. Scientists at USC were able to create a frequency ...
GB win 4x100m relay gold as Bolt pulls up injured – highlights & report

GB win 4x100m relay gold as Bolt pulls up injured – highlights & report

Sports
Media playback is not supported on this device Great Britain's men claimed a stunning 4x100m relay gold at the World Championships as Usain Bolt pulled up injured in his final race.On a febrile night of track and field, Mo Farah's own finale ended with 5,000m silver as he was beaten in a global final for the first time in six years.But with the young GB women's sprint quartet storming to a silver of their own it felt like a generational shift as the stadium came alive just as it had at the 2012 Olympics.Never before has a British team won a world sprint gold, but the quartet of CJ Ujah, Adam Gemili, Danny Talbot and Nethaneel Mitchell-Blake ran a near-perfect race to hold off the fancied US team, with Japan taking bronze as Bolt collapse...
Van Niekerk storms to 400m gold – highlights & report

Van Niekerk storms to 400m gold – highlights & report

Sports
Media playback is not supported on this device World Athletics Championships on the BBCVenue: London Stadium Dates: 4-13 AugustCoverage: Live across BBC One and Two, BBC Radio 5 live, BBC Radio 5 live sports extra, the BBC Sport website and app. Click for timesWayde van Niekerk stormed to the first part of his golden double as he defended his world 400 metres title with a dominant display.With one of his main rivals Isaac Makwala absent after being excluded controversially on medical grounds, Olympic champion and world record holder Van Niekerk left the rest of the field in his wake, underlining his status as the sport's new superstar in the post-Bolt world.The South African's time of 43.98 seconds was almost a second down on the astonis...
Bowie wins 100m gold in thrilling final – video & report

Bowie wins 100m gold in thrilling final – video & report

Sports
Media playback is not supported on this device World Athletics Championships on the BBCVenue: London Stadium Dates: 4-13 AugustCoverage: Live across BBC One and Two, BBC Radio 5 live, BBC Radio 5 live sports extra, the BBC Sport website and app. Click for timesUSA's Tori Bowie stormed to World Championships 100m gold from Marie-Josee Ta Lou and Dafne Schippers as Olympic champion Elaine Thompson was left empty-handed.A night after American Justin Gatlin shocked Usain Bolt in the men's final, Bowie went one better than a year ago in Rio as her perfect dip on the line nicked the race from Ta Lou by one-hundredth of a second.Jamaican favourite Thompson, who had looked peerless in winning her semi-final earlier in the evening, had a start ev...