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Physics World February 2023

Physics World February 2023

Financial rollercoaster: the ups and downs of ultra-long-term bonds

Money is always a bit grubby for high-minded physicists. But some interesting simple physics is at stake, for example when it comes to financial bonds. They’re usually seen as safe and dependable investments, but a recent crash in the value of “ultra-long” bonds was bigger than conventional mathematical models could have predicted. Jon Cartwright explains why the physics of rollercoasters could hold the key. Meanwhile, find out how we can revamp physics degrees, explore the rights and wrongs of renaming terms in physics, and explore the Anthropocene.

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Illustration of the Anthropocene epoch feature

Epoch or event? Defining the Anthropocene

The US National Ignition Facility analysis

Physicists plot laser fusion path

Albert Einstein and Rabindranath Tagore review

Einstein as you’ve never seen him before

Young woman excluded from a group of peers who are laughing opinion

Bridging the class divide

illustration of financial rollercoaster feature

Crash, bang: the rollercoaster physics of ultra-long financial bonds

Anne-Marie Imafidon speaking at the Appleton Space Conference, beneath a screen showing photos of smiling young women and the words "Eat. Sleep. STEM. Repeat" opinion

The space problem

Still of the film Tár showing Cate Blanchett conducting opinion

Eponymy and ethics

Panoramic image from an Apollo mission review

A new life for Apollo's photos

The world’s first wearable magnetoencephalography scanner opinion

Medical benefits

A wine glass and its shadow showing legs or tears on the glass lateral thoughts

As my wine glass gently weeps

ESA (European Space Agency) astronaut Luca Parmitano tethered to the International Space Station

Making spaceflight accessible

Students write on whiteboard. feature

Building a physics degree for the future

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