Trig – The Oldest Practical Math
My guests on this episode are the authors of Make Trigonometry, Build Your Way from Triangles to Analytic Geometry, Joan Horvath and Rich Cameron. Make Trigonometry is the third math book that Joan and Rich have written with us, the previous books.....»»
Engineering dual carriageways for signals: Research expands possibilities for more flexible signaling devices
Routing signals and isolating them against noise and back-reflections are essential in many practical situations in classical communication as well as in quantum processing. In a theory-experimental collaboration, a team led by Andreas Nunnenkamp fro.....»»
Neutering practices for pet UK cats significantly influence feral populations, math model suggests
A new mathematical model of UK cat populations suggests that neutering of cats that belong to people not only affects the population dynamics of owned cats, but also affects feral, stray, and shelter subpopulations. Jenni McDonald of Cats Protection.....»»
12-Pack of AA rechargeable batteries for $13 for Prime Day
If you need to stock up on batteries, Prime Day is the perfect time. It might not be the most fun purchase, but it's cheap and practical......»»
These are the oldest stone tools ever found in the United States
Indigenous people have been in the Americas longer than archaeologists once thought. Enlarge / Rimrock Draw Rockshelter has been excavated since 2011. (credit: Bureau of Land Management) Stone tools unearthed from a rock.....»»
Why putting off college math can be a good idea
Putting off college math could improve the likelihood that students remain in college. But that may only be true as long as students don't procrastinate more than one year. This is what colleagues and I found in a study published in 2023 of 1,119 stu.....»»
Here’s everything to consider about buying a CPU in 2023
Your CPU is at the center of your computer, handling the underlying math that makes your machine tick. In this guide, we show you how to choose a CPU......»»
Board games boost math ability in young children, study finds
Board games based on numbers, like Monopoly, Othello and Chutes and Ladders, make young children better at math, according to a comprehensive review of research published on the topic over the last 23 years......»»
PIGS find ancient stars in the heart of the Milky Way
An international team of researchers has obtained the largest set of detailed observations yet of the oldest stars in the center of our Galaxy, the Milky Way. The Pristine Inner Galaxy Survey (PIGS) team finds that this group of stars is slowly spinn.....»»
Study shows greater emotional exhaustion among math teachers during the COVID-19 pandemic
In a longitudinal study, researchers were able to examine the significance of the COVID-19 pandemic on the professional well-being of math teachers. On a scale of 1 to 4, the mean emotional exhaustion of teachers increased from 1.89 in 2019 to 2.41 i.....»»
New single-photon Raman lidar is practical for underwater applications
Researchers report a new single-photon Raman lidar system that operates underwater and can remotely distinguish various substances. They also show that the new system can detect the thickness of the oil underwater up to 12 m away, which could be usef.....»»
Engineers develop first-of-its-kind integrated optical isolator
An optical isolator developed at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) could drastically improve optical systems for many practical applications......»»
Combining math with music leads to higher test scores, according to review of 50 years of research
Children do better at math when music is a key part of their lessons, an analysis of almost 50 years of research on the topic has revealed......»»
Humans" evolutionary relatives butchered one another 1.45 million years ago
Researchers from the Smithsonian's National Museum of Natural History have identified the oldest decisive evidence of humans' close evolutionary relatives butchering and likely eating one another......»»
Microsoft claims to have achieved first milestone in creating a reliable and practical quantum computer
A team of researchers at Microsoft Quantum has reportedly achieved a first milestone toward creating a reliable and practical quantum computer. In their paper, published in the journal Physical Review B, the group describes the milestone and their pl.....»»
Heat spots reveal growth rate of a galaxy 12 billion years ago
An international team of astronomers has drawn a temperature map of the dust drifting within one of the oldest spiral galaxies of the universe which provides new insights into how fast the galaxy is growing. Until now researchers have only been able.....»»
Could these marks on a cave wall be oldest-known Neanderthal “finger paintings”?
It's even more evidence that Neanderthals could think symbolically, create art. Enlarge / Examples of engravings discovered in the Roche-Cotard Cave in France. (left) A "circular panel" with arch-shaped tracings. (right) A "wavy.....»»
Could these marks on a cave wall be oldest-known Neanderthal finger paintings?
It's even more evidence that Neanderthals could think symbolically, create art. Enlarge / Examples of engravings discovered in the Roche-Cotard Cave in France. (left) A "circular panel" with arch-shaped tracings. (right) A "wavy.....»»
Neanderthal cave engravings identified as oldest known, more than 57,000 years old
Markings on a cave wall in France are the oldest known engravings made by Neanderthals, according to a study published June 21, 2023, in the open-access journal PLOS ONE by Jean-Claude Marquet of the University of Tours, France and colleagues......»»
Today"s Deep-Sea Explorers Are Mineral Miners and Ultrawealthy Hobbyists
A new history of the deep ocean, seeking truth through math, a space opera about self-identity, and more books out now.....»»
The SAT Problem That Everybody Got Wrong
The coin rotation paradox flummoxed SAT test writers even though we encounter this math problem every day.....»»