Expert warns of food consumption habits amid rising prices
A new survey by Dalhousie University's Agri-Food Analytics Lab asked Canadians about their food consumption habits amid rising prices.
The 3D mathematical model created by Nobel Prize-winning physicist Erwin Schrödinger, along with other researchers, and used for more than 100 years to describe how our eyes distinguish colours, has been found to have an important math error.
The finding was published in the journal The Proceedings of the National Academy of Sciences on April 29, following a study conducted at the U.S.-based Los Alamos National Laboratory that looked into the mathematics of colour perception.
“Our original idea was to develop algorithms to automatically improve colour maps for data visualization, to make them easier to understand and interpret,” Roxana Bujack, the paper’s lead author, said in a release.
But, the team ended up being the first to discover that the current mathematical model used for colour perception is incorrect.
“That model was suggested by Bernhard Riemann and developed by Hermann von Helmholtz and Erwin Schrödinger—all giants in mathematics and physics—and proving one of them wrong is pretty much the dream of a scientist,” Bujack said.
The researchers found that the universally-accepted hypothesis of perceived colour used Riemannian geometry, which “overestimates the perception of large colour differences,” and that using it leads to the distance between widely separated colours not adding up correctly.
This is because people perceive large colour differences as smaller than the total difference obtained by adding up little colour differences between two hues separate from one another, the study’s researchers said, concluding that “Riemannian geometry cannot account for this effect.”
Riemannian geometry describes a curved space in which straight lines are “geodesics,” and every pair of straight lines intersect.
“We didn’t expect this, and we don’t know the exact geometry of this new colour space yet,” Bujack said.
“We might be able to think of it normally but with an added dampening or weighing function that pulls long distances in, making them shorter. But we can’t prove it yet.”
The study’s findings will likely have implications for colour measurements now employed in paint and textile manufacturing, colour mapping, television, and image analysis, its researchers say.
A new survey by Dalhousie University's Agri-Food Analytics Lab asked Canadians about their food consumption habits amid rising prices.
Royal commentator Afua Hagan writes that when King Charles recently admitted Catherine to the Order of the Companions of Honour, it not only made history, but it reinforced the strong bond between the King and his beloved daughter-in-law.
A recent decision to restrict consular services for fighting-aged Ukrainian men has made a Ukrainian man in Canada feel less certain of his next steps — and worried he could be pulled back to the war.
The practice of giving sedatives to people detained by police has spread quietly across the U.S. over the last 15 years, built on questionable science and backed by police-aligned experts, an investigation led by The Associated Press has found.
Charlie Woods failed to advance in a U.S. Open local qualifying event Thursday, shooting a 9-over 81 at Legacy Golf & Tennis Club.
When it comes to cardiovascular fitness, you may tend to focus on activities that move you forward, such as walking, running and cycling.
Ashley Dickey and her mother rented part of the same Coquitlam duplex in three different decades under three different landlords.
A man who fell into a crevasse while leading a backcountry ski group deep in the Canadian Rockies has died.
MPP Sarah Jama was asked to leave the Legislative Assembly of Ontario by House Speaker Ted Arnott on Thursday for wearing a keffiyeh, a garment which has been banned at Queen’s Park.
Mounties in Nanaimo, B.C., say two late-night revellers are lucky their allegedly drunken antics weren't reported to police after security cameras captured the men trying to steal a heavy sign from a downtown business.
A property tax bill is perplexing a small townhouse community in Fergus, Ont.
When identical twin sisters Kim and Michelle Krezonoski were invited to compete against some of the world’s most elite female runners at last week’s Boston Marathon, they were in disbelief.
The giant stone statues guarding the Lions Gate Bridge have been dressed in custom Vancouver Canucks jerseys as the NHL playoffs get underway.
A local Oilers fan is hoping to see his team cut through the postseason, so he can cut his hair.
A family from Laval, Que. is looking for answers... and their father's body. He died on vacation in Cuba and authorities sent someone else's body back to Canada.
A former educational assistant is calling attention to the rising violence in Alberta's classrooms.
The federal government says its plan to increase taxes on capital gains is aimed at wealthy Canadians to achieve “tax fairness.”
At 6'8" and 350 pounds, there is nothing typical about UBC offensive lineman Giovanni Manu, who was born in Tonga and went to high school in Pitt Meadows.