Recent research has revealed a common genetic link between the larynx vocal organ of mammals, reptiles and amphibians and the syrinx vocal organ of birds. This figure illustrates the evolution of the larynx and syrinx in different animal lineages. Although birds are direct descendants of dinosaurs and have a larynx and a syrinx, it is … Read more
The Doppler effect can be heard especially clearly when a train passes. The presence of the same effect in the generalized telegraphic equation indicates the wave nature of heat transport over small distances. Credit: IFJ PAN When a train approaches or an ambulance approaches us with its siren blaring, we hear the sound at an … Read more
Wenge Huang inspects material samples in Jiangtao Cheng’s lab. Credit: Alex Parrish for Virginia Tech. Sprinkle a few drops of water on a hot pan and if the pan is hot enough, the water will sizzle and the water droplets will appear to swirl and float, hovering above the surface. The temperature at which this … Read more
Structures of AlGaN/GaN TLMs studied in this work. (a) Selectively regrown n++ ([Si]11020cm3) GaN contacts in the Ohmic region only with the different contributions of the contact resistances Rc, 1Rc, 2and Rc, 3 labeled. (b) Regrown n++ GaN over entire TLM region. (c) Ti/Al/Ni/Au alloyed contacts. Credit: Applied Physics Letters (2024). DOI: 10.1063/5.0191297 The scorching … Read more
a) Schematic of one-shot characterization activated by the two-photon indistinguishability metasurface. Credit: Optics (2024). DOI: 10.1364/OPTICA.516064 A growing number of emerging quantum applications operate using optical technologies. Basically, photons carry information at the speed of light and over long distances, making them good candidates for fast and secure communications and quantum computing. Many of these … Read more
Credit: Pixabay Millet, the grain, is having a moment. The United Nations declared 2023 as the International Year of the Nation. And last September, leaders at the G20 Summit in India were treated to a smorgasbord of dishes and desserts all made from millet. It’s easy to see why millet is getting so much love … Read more
Boundary structure between Ih- and Ic-stacking domains on the (0001) surface of hexagonal ice. Credit: Nature (2024). DOI: 10.1038/s41586-024-07427-8 A team of physicists associated with several institutions in China has discovered the reason for the ice slide. In their study, published in the journal Naturethe group used atomic force microscopy to take a closer look … Read more
Precisely targeted femtosecond laser pulses were focused on the central nervous system of larval zebrafish under different irradiation environments. Credit: Hanieh Fattahi, MPL Research Group Nonlinear light microscopy has revolutionized our ability to observe and understand complex biological processes. However, light can also damage living matter. However, the mechanism behind the irreversible perturbation of cellular … Read more
An artist’s conception of photons, the particles that make up light, the disturbing plasma. Credit: Kyle Palmer / PPPL Communications Department Both literally and figuratively, light permeates the world. It dispels darkness, carries telecommunication signals between continents, and makes visible the invisible, from distant galaxies to the tiniest bacteria. The light can also help heat … Read more
Gas that collects and accumulates into a mini-galaxy in the process of building. While this is how galaxies form according to theories and computer simulations, it had never been seen before. Credit: NASA Using the James Webb Space Telescope, researchers at the University of Copenhagen have become the first to see the formation of three … Read more