When Cern’s gargantuan accelerator, the Large Hadron Collider (LHC), fired up ten years ago, hopes abounded that new particles would soon be discovered that could help us unravel physics’ deepest mysteries. Dark matter, microscopic black holes and hidden dimensions were just some of the possibilities. But aside from the spectacular discovery of the Higgs boson […]
Trio of atomic clocks compared Light frequencies of three different atomic clocks have been compared, moving physicists a step closer to making the measurement of a unit of time — the second — more precise. One clock is made of ytterbium atoms, another of strontium atoms and the last is made of just one aluminum […]
When you first study electromagnetism, all the electromagnetic waves you find are plane ones, waves in which the electric and magnetic fields are both orthogonal to the direction of travel of the wave. But this is a mode – the field pattern of the propagating wave – that is somehow ideal, as it exists in […]
Quick simulations of space orbits and trajectories are essential in different aspects of space engineering, from the optimization of trajectories and orbit transfers, to the determination of the orbits themselves, altitude control, and gravitational modelling. Although the preliminary analysis of satellite space orbits can be done without extensive simulations, to represent the dynamical states of […]
Imagine running on a cement footpath, and then suddenly through dry sand. Just to keep upright, you would have to slow down and change the way you run. In the same way, a walking robot would have to change its gait to handle different surfaces. Generally, we humans and most robots can only change how […]
Oumuamua may be hunk of nitrogen-rich planet The interstellar object Oumuamua is likely a piece of a planet rich in nitrogen that broke off about 500 million years ago and is shaped more like a cookie than a cigar. Researchers used computer models focusing on Oumuamua’s shape, size and shininess to determine the object’s possible […]
Acenes are the class of organic compounds made up of linearly fused benzene rings. The best known of acenes is the compound with three rings, anthracene. The larger representatives, like pentacene (the one with five rings) have potential interest in optoelectronic applications and are actively researched in chemistry and electrical engineering. Starphenes are 2D polyaromatic […]
COVID-19 worsens the already existing social difficulties for older adults and the disabled involved in long-term care services and supports; i.e., nursing homes, skilled nursing facilities, and home and community-based services . A hug is a form of non-verbal communication. It can indicate familiarity, love, affection, friendship, brotherhood, or sympathy. We use it when we […]
Earth hasn’t always been a blue and green oasis of life in an otherwise inhospitable solar system. During our planet’s first 50 million years, around 4.5 billion years ago, its surface was a hellscape of magma oceans, bubbling and belching with heat from Earth’s interior. The subsequent cooling of the planet from this molten state […]
Tiny crystals inside white dwarfs may spark supernovas Tiny crystals made from uranium atoms that congregate in the middle of white dwarf stars as they age may spark Type 1a supernovas. Researchers say this could be the case in white dwarfs that have lower mass and aren’t part of a binary star pair, after observing […]