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ScienceDaily: Matter & Energy News |
| Over the top: Car jump study turns over old physics problem Posted: 24 Nov 2021 12:40 PM PST If an automobile is moving at a steady speed over a hill in the shape of a vertical circular arc, what is the maximum speed it can attain without losing contact with the road at the crest of the hill? New research demonstrates that, despite numerous textbook references stating otherwise, a car will leave the ground on the downside of a peak. The study presents three cases to illustrate the nuances of the different physics principles at play and a researcher ultimately presents a compelling argument, dispelling the long-held notion a car can leave the road at the top of a smooth hill. |
| Shifting colors for on-chip photonics Posted: 24 Nov 2021 12:39 PM PST Researchers have developed highly efficient, on-chip frequency shifters that can convert light in the gigahertz frequency range. The frequency shifters are easily controlled, using continuous and single-tone microwaves. |
| A new artificial material mimics quantum entangled rare earth compounds Posted: 24 Nov 2021 12:39 PM PST Physicists have created a new ultra-thin two-layer material with quantum properties that normally require rare earth compounds. This material, which is relatively easy to make and does not contain rare earth metals, could provide a new platform for quantum computing and advance research into unconventional superconductivity and quantum criticality. |
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