Newton's first law describes how, once in motion, planets remain in motion. What it does not do is explain how the planets are observed to move in nearly circular orbits rather than straight lines. Enter the second law. To move in a curved path, a planet must have an acceleration toward the center of the circle. This is called centripetal acceleration and is supplied by the mutual gravitational…
The intersection of AI, the Internet of Things (IoT) and edge computing has kindled the edge AI revolution that promises to redefine how we perceive and interact with the physical world through intelligent devices. Edge AI moves intelligence from the network centre to the devices at its edge, entrusting these endpoints to analyse data locally, make decisions, and provide real-time responses. Re…
Though the guitar as we know it is only about a century and a half old, its roots as a plucked stringed instrument go back deep into history. Many ancient folk instruments have followed the basic strings-stretched-overfretboard-and-played-with-fingers design for thousands of years, and the guitar is in some ways the culmination of that legacy. It seems humans have always had something like the …
After several days of intense debate, first the United States House of Representatives and then the U.S. Senate voted to authorize President George W. Bush to attack Iraq if Saddam Hussein refused to give up weapons of mass destruction as required by United Nations’s resolutions. Debate about a possible military action against Iraq continued in various governmental bodies and in the public fo…
Time is against us. The world has already warmed by an average of 1 degree Celsius, as decades of rising greenhouse gas emissions have accu-mulated in our atmosphere. Devastating impacts are predicted if we fail to hold average warming well below 2 degrees Celsius this century. Any delay in tackling climate change, even one that allows the seemingly minor upward creep i…
he authority of contemporary science is fuelled by its achievements. The extraordinary experimental success of the Standard Model of particle physics and of the descrip-tion of quantum mechanical interactions between those particles, the observational data confirming the Big Bang theory and the age of the universe, as well as the discovery of its accelerating expansion (not to mention more spec…