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Tag: signatures

Students help scientist ID the sonic signatures of solar storms

Students help scientist ID the sonic signatures of solar storms

Science
Oct. 20 (UPI) -- What does it sound like when solar storms collide with Earth's magnetosphere? Students in London are helping scientists find out. Earth's magnetic field features a near-constant cacophony of low-frequency sound waves -- too low-pitched to be discernible to the human ear. But by speeding up audio recordings of the magnetosphere, researchers at London's Queen Mary University made the sound wave audible. A group of 12 students at Eltham Hill School in south east London helped scientists identify sound wave patterns that lowered in pitch over the course of several days. Scientists identified a connection between the wave patterns and electromagnetic disturbances that occur in the wake of a coronal mass ejection, or solar storm. The new research, published this week in the jou...
Signatures of complex organic molecules spotted on Saturn's moon Enceladus

Signatures of complex organic molecules spotted on Saturn's moon Enceladus

Science
June 27 (UPI) -- Scientists have found evidence of complex organic molecules on Saturn's moon Enceladus. The chemical signals were identified among spectrometry data collected by NASA's Cassini spacecraft. "We are, yet again, blown away by Enceladus," Christopher Glein, a space scientist at the Southwest Research Institute, said in a news release. "Previously we'd only identified the simplest organic molecules containing a few carbon atoms, but even that was very intriguing." The new data revealed the presence of complex organic molecules with masses greater than 200 atomic mass units. "That's over ten times heavier than methane," Glein said. "With complex organic molecules emanating from its liquid water ocean, this moon is the only body besides Earth known to simultaneously satisfy all...
Credit card signatures are almost a thing of the past

Credit card signatures are almost a thing of the past

Finance
5 stunning stats about credit cardsThe random scribble you hastily scrawl after swiping your credit card is no longer required. Major credit card companies are getting rid of the signature requirement for credit card transactions. American Express, Discover and Mastercard will no longer require merchants to collect a signature on April 13. Visa will do away with the signature requirement starting April 14. "Signatures are no longer considered to be any real deterrent to fraud," explained Matt Schulz, senior industry analyst at CreditCards.com. "Most people don't sign their name in full or take it all that seriously." The signature requirement had already been fading, especially for smaller purchases. For instance, American Express has not required a signature for transactions under $ 50...