Tagged: light

Bright skies named colour of the year – here’s why there’s so much more to the heavens than blue - Guest Work

Guest Author Sep 28, 2021

Daniel Brown, Nottingham Trent University   The colour of 2022 will be “bright skies”, according to paint manufacturer Dulux. This mellow light blue may certainly seem familiar. Depending on where and at what time of the day you look at the sky, you might well expect to catch a glimpse of a similar colour. Yet take the time to … Read More

Bad light stopped play - Physics Stop

Marcus Wilson Aug 26, 2020

One of the top challenges for physics in the modern era, along with Climate Change and explaining Dark Energy, has to be fixing the problem of bad light*. (I’m talking cricket – what else?) It’s a quintessentially English problem. It’s not raining, the pitch is perfectly playable, the spectators (COVID-19 notwithstanding) are enjoying themselves, but the umpires bring the … Read More

Black holes aren’t totally black, and other insights from Stephen Hawking’s groundbreaking work - Guest Work

Guest Author Mar 20, 2018

Christoph Adami, Michigan State University This article was originally published on The Conversation. Read the original article. Mathematical physicist and cosmologist Stephen Hawking was best known for his work exploring the relationship between black holes and quantum physics. A black hole is the remnant of a dying supermassive star that’s fallen into itself; these remnants contract … Read More

I’ve always wondered: why is a green screen green? - Guest Work

Guest Author Mar 15, 2018

Lincoln Turner, Monash University and Russell Anderson, Monash University This is an article from I’ve Always Wondered, a series where readers send in questions they’d like an expert to answer. Send your question to alwayswondered@theconversation.edu.au I’ve always wondered why is a green screen green in TV and film making, as opposed to blue or white or … Read More

Science Tank | Schrodinger’s cat & the double slit experiment - Guest Work

Guest Author Jan 11, 2018

In 1935, an Austrian physicist named Erwin Schrödinger published his “Schrödinger’s Cat” thought experiment to explain superposition (a quantum mechanics principle stating that something exists in all possible states until it is directly observed or measured, at which point it exists only in one of its possible states). Erwin Schrödinger, staring intently at you. Wikimedia Commons. The thought … Read More

Rare glimpse of a black hole’s magnetic field could help us to understand how it feeds - Guest Work

Guest Author Dec 12, 2017

Carole Mundell, University of Bath Encountering a black hole would be a frightening prospect for our planet. We know that these cosmic monsters ferociously devour any object that strays too close to their “event horizon” – the last chance of escape. But even though black holes drive some of the most energetic phenomena in the universe, the … Read More

Small and bright: what nanophotonics means for you - Guest Work

Guest Author May 04, 2016

By Benjamin J. Eggleton, University of Sydney Twenty fifteen was UNESCO’s International Year of Light and Light based Technologies. It was a celebration of past milestones in optics and photonics and a look forward into it’s future. We celebrated 1,000 years of Arabic optics, 150 years since James Maxwell’s electrodynamics, 100 years since Albert Einstein’s … Read More

Astronomy: A Voyage of Discovery - Micro to Macro

Ryan Ridden Feb 09, 2016

Astronomy is a subject of exploration. In an age where the Earth has been charted from the Old World to the New, it almost seems like the age of great voyages of exploration and discovery have long passed. That stands true as long as you don’t look up at night. On a clear night it becomes painfully clear there is much … Read More

A light puzzle - Physics Stop

Marcus Wilson Jul 13, 2015

Here's a puzzling photograph that Hans Bachor showed me at the end of the NZ Institute of Physics conference last week. It comes from his public lecture on lasers a week ago. And we don't have the answer to it, so maybe you can enlighten us (pun intended).  The photo is of a demonstration of total … Read More