Twists, turns, thrills and spills: the physics of rollercoasters
WEBAug 14, 2021 · Twists, turns, thrills and spills: the physics of rollercoasters. Taken from the August 2021 issue of Physics World. A ride on a rollercoaster is a perfect example of physics in action. But there is much more at play than simply gravity and speed when it comes to the thrill of rollercoasters, as Michael Allen discovers.
Home – Physics World
WEBPhysics World represents a key part of IOP Publishing's mission to communicate world-class research and innovation to the widest possible audience. The website forms part of the Physics World portfolio, a collection of online, digital and print information services for the global scientific community.
The physics of blood spatter
WEBOct 17, 2019 · The physics of blood spatter. (Courtesy: iStock/kurapy11) 17 Oct 2019. Taken from the October 2019 issue of Physics World. Analysing the blood stains following a shooting can be key to finding the perpetrator, but it’s a field of forensics that is being called into question. Sidney Perkowitz explains how understanding the physics behind the ...
Graphene at 20: why the ‘wonder material’ is finally coming good
WEB30 Apr 2024 James McKenzie. Strong, light and with amazing electronic properties, graphene has always been touted as the “wonder material”. But two decades after it was first isolated, James McKenzie believes that graphene is finally delivering on its promise. Market strengths Being so strong, light and such a good conductor, graphene has a ...
The double-slit experiment - Physics World
WEBSep 1, 2002 · This article is an extended version of the article “The double-slit experiment” that appeared in the September 2002 issue of Physics World (p15). It has been further extended to include three letters about the history of the double-slit experiment with single electrons that were published in the May 2003 issue of the magazine.
The enduring mystery of the solar corona - Physics World
WEBSep 16, 2021 · It’s the solar corona – a hot plasma that extends millions of kilometres out into space. This region is a million times dimmer than the solar surface beneath, yet, strangely, it’s at least 1 million kelvin hotter. Seven decades after the unexpected observation was first made, it’s still one of the biggest mysteries in astronomy.
How to build a super-magnet - Physics World
WEBAug 19, 2018 · A superconducting magnet of ≥25 T typically comprises an outer magnet (or “outsert”) made from LTS materials and an insert that uses HTS materials. In the 32 T NHMFL magnet, the outsert section consists of three coils of niobium-tin (Nb3Sn) and two coils of niobium-titanium (NbTi), all supplied by Bruker-Oxford Superconducting Technology.
Cecilia Payne-Gaposchkin: the woman who found hydrogen in the …
WEBMar 8, 2022 · Not enough people know that the cosmic importance of hydrogen was first grasped by a young PhD student, Cecilia Payne (Payne-Gaposchkin after she married), who in 1925 discovered hydrogen in the stars. Indeed, she earned a PhD at a time when it was still extremely difficult for women to do so, and …
Lithium-ion batteries break energy density record - Physics World
WEBApr 21, 2023 · Lithium-ion batteries recharge in the cold The researchers, who report their work in Chinese Physics Letters, explain that a trade-off always exists between the energy density, cycle performance, rate capability and safety of lithium-ion batteries. Safety is a primary requirement, but elevated energy density will increase the risks during battery operation, they say. “Energy density must be ...
The Casimir effect: a force from nothing - Physics World
WEBSep 1, 2002 · The Casimir force is the most famous mechanical effect of vacuum fluctuations. Consider the gap between two plane mirrors as a cavity (figure 1). All electromagnetic fields have a characteristic “spectrum” containing many different frequencies. In a free vacuum all of the frequencies are of equal importance.