This site uses cookies. By continuing to use this site you agree to our use of cookies. To find out more, see our Privacy and Cookies policy.
Skip to the content

Free weekly newswire

Sign up to receive all our latest news direct to your inbox.

Physics on film

100 Second Science Your scientific questions answered simply by specialists in less than 100 seconds.

Watch now

Bright Recruits

At all stages of your career – whether you're an undergraduate, graduate, researcher or industry professional – brightrecruits.com can help find the job for you.

Find your perfect job

Physics connect

Are you looking for a supplier? Physics Connect lists thousands of scientific companies, businesses, non-profit organizations, institutions and experts worldwide.

Start your search today

Tag archives: history of physics

Moving meridians, Stradivarius violins, sunspots and more

The Prime Meridian and the modern reference meridian

Walk the line: Airy meridian is marked as the “Prime Meridian of the World” (dotted line), and the modern reference meridian indicating zero longitude using GPS (solid line).
(Courtesy: 2014 Google Maps, Infoterra & Bluesky)

 

By Tushna Commissariat

A visit to the Royal Observatory in Greenwich is incomplete without walking along the Prime Meridian of the world – the line that literally divides the east from the west – and taking some silly photos across it. But you may be disappointed to know that the actual 0° longitudinal line is nearly 100 m away, towards the east, from the plotted meridian. Indeed, your GPS would readily show you that the line actually cuts through the large park ahead of the observatory. I, for one, am impressed that the original line is off by only 100 m, considering that it was plotted in 1884. A recently published paper in the Journal of Geodesy points out that with the extreme accuracy of modern technology like GPS, which has replaced the traditional telescopic observations used to measure the Earth’s rotation, we can measure this difference. You can read more about it in this article in the Independent.

(more…)

Posted in The Red Folder | Tagged , , , , | Leave a comment | Permalink
View all posts by this author  | View this author's profile

The August 2015 issue of Physics World is now out

 

By Matin Durrani

Mention the two words “science policy” and most physicists’ eyes will probably glaze over. Most of us dream of discovering a new planet or finding the Higgs boson – not poring over budget spreadsheets, championing science to politicians or commenting on legislation.

But science policy is vital in today’s world, which depends hugely on scientific research and in the cover feature of the August issue of Physics World, which is now out, Len Fisher and John Tesh offer 12 practical tips for scientists who want their ideas incorporated into science policy. You’ll be intrigued by what the two authors have to say.

Elsewhere in the issue, as my colleague Tushna Commissariat explains in the video above, there’s a great feature based on an interview with the French physicist Hélène Langevin-Joliot – the granddaughter of Marie Curie. In the article, Langevin-Joliot explains what’s known as the “Curie complex” and gives her own tips for scientific success. Langevin-Joliot didn’t suffer from the complex herself, but she acknowledges that it is a big problem for others and, these days, spends her time actively promoting careers for women in science

(more…)

Posted in General | Tagged , , , | 1 Comment | Permalink
View all posts by this author  | View this author's profile

Solarquest, Pluto and the importance of New Horizons

A photo of the board game Solarquest, which contains images of all nine planets, several of their moons, and a path between them

The Solarquest board, complete with planets, moons and artificial satellites.

By Margaret Harris

Last night, in honour of the New Horizons mission to Pluto, I pulled out my copy of Solarquest. This classic board game was a childhood favourite of mine, and it’s basically Monopoly in space: instead of buying properties named after streets in Atlantic City, New Jersey (or London, if you’re British), you buy planets, moons and artificial satellites. Then, when your fellow players land on an object you own, you charge them rent.

Such nostalgia is all well and good, I hear you say, but what’s it got to do with New Horizons or Pluto? Well, Solarquest’s inventors clearly took their science seriously. By board game standards, there’s quite a lot of physics in it. For example, you can’t leave a planet unless you roll a number high enough to overcome its gravitational pull, and its Monopoly-like property deed cards include facts about each planet and moon as well as their prices.

(more…)

Posted in General | Tagged , , | 1 Comment | Permalink
View all posts by this author  | View this author's profile

ILC Science Club, science fiction versus science fact and siblings in physics

 

By Hamish Johnston

At the end of next week millions of children in England and Wales will start their summer holidays and many parents will now be scrambling to find activities to keep their little dears occupied. Physics World can recommend a virtual trip to ILC Science Kids Club courtesy of the Tokyo Cable Network and Japan’s Advanced Accelerator Association. ILC stands for International Linear Collider, which is one of several proposed to take over when the Large Hadron Collider is eventually retired. In the first video of the series, a boy called Haru learns why scientists are keen on building accelerators from his Uncle Tomo. The video is in Japanese with English subtitles, so as well as learning about particle physics, your little tykes might even pick up a little Japanese.

(more…)

Posted in The Red Folder | Tagged , , | Leave a comment | Permalink
View all posts by this author  | View this author's profile

Getting into the mind of Maxwell

Malcolm Longair on the beauty of Maxwell's equations
Published 150 years ago, Maxwell's paper on electricity and magnetism remains hugely profound
This text will be replaced

By Matin Durrani

In case you’ve forgotten – and shame on you if you have – 2015 has been designated the International Year of Light and Light-based Technologies (IYL 2015).  There’s been loads going on all over the globe, which you can follow on the excellent IYL 2015 blog, and we at Physics World have been in on the act too don’t forget. Our March 2015 issue was devoted to light and we also produced a digital-only collection of our 10 best features on light, which you can read free here.

(more…)

Posted in General | Tagged , , , | 6 Comments | Permalink
View all posts by this author  | View this author's profile

Atomic time was born 60 years ago today

 

By Hamish Johnston

“The death of the astronomical second and the birth of atomic time” is how the British physicist Louis Essen described 3 June 1955, when the world’s first practical atomic clock ticked for the first time.

The place was Teddington on the outskirts of London, which is home to the National Physical Laboratory (NPL). Essen’s clock was based on a beam of caesium atoms and was monitored by microwave technology inspired by his wartime work on radar. The clock was more than a metre long and nicknamed the “Flying Bedstead” by engineers at the BBC, who used it as an input for their radio time signal. The clock made atomic time available worldwide for the first time 60 years ago. Then, in 1967, the second was redefined as an SI unit based on an atomic transition in caesium, thereby ending the ancient practice of defining time though astronomical observations.

(more…)

Posted in General | Tagged | Leave a comment | Permalink
View all posts by this author  | View this author's profile

Was Bruno Pontecorvo a spy?

Frank Close (centre) speaking at Prospect magazine HQ on 12 March 2015

Reflecting on – Frank Close (centre) discusses the life of the Italian physicist Bruno Pontecorvo, who defected to the Soviet Union in 1950.

By Matin Durrani

Like all good publications, Prospect has a strapline about itself – “the leading magazine of ideas”. Physics World is also about ideas, although sadly our magazine, great though it is, doesn’t have adverts for Cartier watches, Embraer executive jets or the Taj Exotica Resort & Spa in the Maldives as Prospect does. Clearly, some people with ideas have more money to spend than others.

I was kindly invited last week by the deputy editor of Prospect, Jay Elwes, to an event he hosted at the magazine’s headquarters in central London. The event featured the University of Oxford physicist Frank Close, who has just published a new book on the life and times of Bruno Pontecorvo. Close was on hand to discuss the key themes of the book, which is entitled Half Life: the Divided Life of Bruno Pontecorvo. Elwes described the attendees as a “small, high-powered group”, including as it did Pauline Neville Jones, the former chair of the UK’s Joint Intelligence Committee and Jonathan Evans, the former director-general of the British security service MI5.

(more…)

Posted in General | Tagged , , , | 1 Comment | Permalink
View all posts by this author  | View this author's profile

Rediscovering Marie Curie and the pioneering women of science

Photograph of a panel of speakers at the women in physics conference

The panel of speakers at the women in physics conference. (Courtesy: Institute of Physics)

By Tushna Commissariat

This Sunday, as the world celebrates International Women’s Day, I’ll be thinking of some amazing women who had a huge impact on the world of physics, helping shape the field as we know it today. Indeed, yesterday I was at the Institute of Physics in London, attending a day-long conference on “The lives and times of pioneering women in physics” hosted by the Institute’s Women in Physics group along with its History of Physics group. While there were a host of interesting speakers at the event, undoubtedly the star of the day was French nuclear physicist Hélène Langevin-Joliot, granddaughter of one of the 20th-century’s most famous female physicists – Marie Curie.

(more…)

Posted in General | Tagged , , | 2 Comments | Permalink
View all posts by this author  | View this author's profile

Oscar-nominated physics, putting the jump into popping corn and more

 

By Tushna Commissariat

There is nothing quite like a bowl of hot, buttery popcorn – and it seems as if even physicists are enthralled by it as they dig into the pops and jumps of this tasty snack. A recent article in the New York Times caught our attention this week, as it talked about how a French research duo used high-speed video cameras and a hot plate to see just why a kernel of corn not only pops, but also leaps up as it puffs. The team found that as the kernel’s hull is breached, we hear the popping sound and this is swiftly followed by the jump that happens when a puffy bit of the inside pushes out and makes the corn jump, a bit like a muscle twitch. Take a look at the lovely slow-motion video above of individual kernels leaping about like perfect puffy ballet dancers.

(more…)

Posted in The Red Folder | Tagged , , , | 1 Comment | Permalink
View all posts by this author  | View this author's profile

The devil wears pulsars, Leó’s lost love and a terrifying polonium plot

Out of this world: a Hubble T-shirt from Couth Clothing (Courtesy: Etsy)

Out of this world: a Hubble T-shirt from Couth Clothing. (Courtesy: Etsy/Couth Clothing)

By Hamish Johnston

Fancy a Hubble Space Telescope T-shirt or perhaps a pair of leggings printed with glow-in-the-dark stars and planets? For pictures and links to these and other stellar fashions, check out the STARtorialist blog, which is run by two astronomers based in New York City and described as “Where science meets fashion and scientists get fabulous!”.

(more…)

Posted in The Red Folder | Tagged , | 4 Comments | Permalink
View all posts by this author  | View this author's profile
WordPress Appliance - Powered by TurnKey Linux