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: puzzle

Holiday word challenge

rev-astronomy-poty-coverTo keep your brain cells active over the festive period, we have put together a word puzzle based wholly on articles published in Physics World this year. We have two copies of Astronomy Photographer of the Year: Collection 5 to give away as prizes. Download a PDF of the puzzle here.

For the fifth year in a row, the Royal Observatory Greenwich has produced a beautiful hardback book showcasing the winners of the Astronomy Photographer of the Year competition. This year, its publisher Collins Astronomy has kindly offered us two copies to give away to readers. You just need to complete the festive puzzle in this PDF to be in with a chance of winning. Terms and conditions apply.

See “Galaxies and auroras and planets, oh my!” for our review of Astronomy Photographer of the Year: Collection 5 and a sneak preview of the photos.

(more…)

Posted in General | Tagged | Comments Off on Holiday word challenge | Permalink
View all posts by this author  | View this author's profile

From penguins to photons – the December 2016 issue of Physics World is now out

pwdec16cover-200By Matin Durrani

Everyone loves physics. And everyone loves animals, right? In the December issue of Physics World magazine, which is now live in the Physics World app for mobile and desktop, University of Bristol physicist Peter Barham explains how he became an expert in penguins, studying the factors that that affect their survival and discovering how to use the spots on African penguins to identify them. You can also read the article here.

Elsewhere in the new issue, you can enjoy our selection of the best books for Christmas, discover how one physicist became a successful contemporary dancer, and find out how to spot single photons with your naked eye.

Don’t miss either the chance to win a copy of Astronomy Photographer of the Year: Collection 5 in our special prize puzzle.

(more…)

Posted in General | Tagged , , , , , , | Comments Off on From penguins to photons – the December 2016 issue of Physics World is now out | Permalink
View all posts by this author  | View this author's profile

Physics World’s festive puzzle: solution

By Louise Mayor

Did you manage to solve Physics World’s festive puzzle, published last month? In case you missed it, take a look at part 1 and part 2 and see how you fare. The puzzle was created for Physics World by Colin of the UK’s Government Communication Headquarters (GCHQ), whose full identity cannot be revealed.

Spoiler alert: the solution in full is posted below.

(more…)

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

Physics World’s festive puzzle: part 2

PWDec14puzzle-glassBy Louise Mayor

The image above is the second and final part of Physics World’s festive puzzle 2014. If this is the first you’ve heard about the puzzle, start by checking out Physics World’s festive puzzle: part 1, which was published a week ago.

Can you solve it? Let us know how you get on by posting a comment below, but please do keep the answer to yourself, if you work it out, to avoid giving the game away for others.

We hope you enjoy this bit of fun. There are no prizes – the only reward is the satisfaction of finishing the puzzle. Solutions will be published on this blog in January.

Posted in General | Tagged , | 4 Comments | Permalink
View all posts by this author  | View this author's profile

Physics World’s festive puzzle: part 1

PWDec14puzzle-treeBy Louise Mayor

Although I wouldn’t want to tar us all with the same brush, for many people – including me – the festive period marks indulging in rest, rich food and a reacquaintance with the goggle-box.

Switching off and slumping on the sofa seems like the best thing ever for a few days, but eventually I find it gets a bit boring. That’s when I find myself craving some mental stimulation, whether that be gorging on crosswords, designing a new knitting pattern or learning a new programming language.

But how about you – are you busy right now digesting roast potatoes and zoning out on Indiana Jones, or do you have an appetite, instead, for a challenge?

(more…)

Posted in General | Tagged , | 3 Comments | Permalink
View all posts by this author  | View this author's profile

Physics World at 25: Puzzle solutions

By Louise Mayor

Infographic designed to look like the dial for a safe, with a ring of colors around the edge showing information in the same way as a pie chart. Each sector is labelled with its category and number and they are: red, Puzzle 1, 5376; orange, Puzzle 2, 2593; yellow, Puzzle 3, 683; teal, Puzzle 4, 369; blue, Puzzle 5, 186; and dark blue, All five puzzles combined, 117.

Infographic showing the number of correct answers submitted to the online answer-checking tool for each of Physics World’s five anniversary puzzles.

(Warning: spoilers below for those who haven’t yet tried the Physics World at 25 puzzles.)

October 2013 was Physics World’s 25th birthday. It was also the month in which, unusually for me, I compulsively checked the comments being posted on this blog. That’s because we published a series of five physics-themed puzzles as part of the celebrations, which left me both (a) excited to see if people would enjoy them, and (b) nervous that some loose cannon might reveal an answer and spoil the fun! (It didn’t calm my worries that the very first comment made on the very first puzzle – now deleted – was indeed the answer to the puzzle.)

With more than 1000 comments posted in total, the response to the puzzles was staggering. Commenters posted where they’d come in the rankings (“Hallelujah! #121. That was a tough slog.”), encouraged others to persevere (“Ted, I think you’re nearly there. You’re right about the first word”) and recipients of help were very grateful (“Thanks uszkanni! I’ve been going a bit mental on that one.”)

The infographic above-right shows the number of correct answers submitted to the online answer-checking tool for each of the puzzles, as of early December. We were very impressed with those numbers: not everyone at Physics World HQ was so successful.

Some commenters also debated whether there were mistakes in the puzzles or even more than one possible answer. “Please do better next time Louise,” someone warned me.

Unfortunately, as I couldn’t debate this without giving the game away, my lips were sealed! Today, however, we can announce not only the single-word answers to the puzzles, but also how you can arrive at these answers. Thanks again to Colin, Nick and Pete at the UK’s Government Communications Headquarters (GCHQ), who composed all the puzzles as well as the solutions below.

If you haven’t tried the puzzles yet, and would like to have a go before seeing the solutions, here are the links to each:

Puzzle 1
Puzzle 2
Puzzle 3
Puzzle 4
Puzzle 5
(Puzzle round-up)

(more…)

Posted in Physics World at 25 Puzzle | Tagged , , | 4 Comments | Permalink
View all posts by this author  | View this author's profile

Quiz of the year 2013

By Margaret Harris

Physics World’s light-hearted quiz about the year in physics has occupied the back page of the December print edition every year since 2004 and this year, as we did last year, we’ve created an interactive online version. The 2013 quiz can be found here and although there’s no prize for getting a high score, you’ll be able to check your results once you’ve completed all of the 25 questions. Each question is based on an event or story that the magazine has reported on this year.

(more…)

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

Physics World at 25: Puzzle round-up

Physics World at 25 Puzzle

By Louise Mayor

Twenty-six days ago we launched the Physics World at 25 Puzzle with the first and easiest of the five puzzles in the series. Today we announced the fifth, final and most fiendish puzzle of all.

Did anyone out there manage to bag the whole set? See where you rank by entering all five answers, in sequential order and as a single string of text with no spaces, in the box below.

However you do, we sincerely hope you enjoy trying the puzzles.

For any frustrated puzzlers out there who are at the end of their tether and want to know the answers, do not fret: the solutions will be revealed in the January 2014 issue of Physics World.

(more…)

Posted in Physics World at 25 Puzzle | Tagged , , , | 53 Comments | Permalink
View all posts by this author  | View this author's profile

Physics World at 25: Puzzle 5

By Louise Mayor

It is time for the final and most fiendish challenge in the Physics World at 25 Puzzle. Have you got what it takes to figure it out? #PW25puzzle

Check out our round-up of the entire puzzle series where you can enter your answers to all five puzzles.

 

This question consists of a list of 55 words, plus one lone word. You have to work out where the lone word slots into the list. Each of the 56 words can be associated with another word and this second set of 56 words are in alphabetical order. The second set of 56 words divide up into seven sets of eight words, with the seven sets representing seven methods of pairing. The list reads from left to right, top to bottom.

Where does FLOW slot into the following list?

METEOR        POSITRON      PRINCIPLE     MARS

NUMBER        MODEL         COINCIDENCE   BORDA

DISH          NEUTRON       UNIVERSE      EFFECT

MOON          LANE          DAY           MAN

LINES         HOLOGRAPHY    KLEIN         NAMAKA

KING          SUN           GIBBS         INDUCTANCE

FREQUENCY     TIME          WATER         ENERGY

IO            MASS          CYCLOTRON     LANDAU

PHOBOS        WELL          LEVY          FERRIMAGNETISM

TRITON        TON           RESISTANCE    PRESSURE

ROSE          GROSS         CONSTANT      CHARON

ARGON         NEUTRINO      FORD          TITAN   

CONDUCTANCE   FRICTION      MIRANDA       FORCE

POWER         DARCY         MODULUS

The answer needs to be entered as three words, in this order: the associated word of the listed word that precedes FLOW, FLOW’s associated word, and the associated word of the listed word that follows FLOW. The three words should be entered as a single string of text with no spaces.

Posted in Physics World at 25 Puzzle | Tagged , , , | 205 Comments | Permalink
View all posts by this author  | View this author's profile

Physics World at 25: Puzzle 4

By Louise Mayor

Prepare to be perplexed by the fourth and penultimate brainteaser in the Physics World at 25 Puzzle. #PW25puzzle

 

Which food is, unusually, mentioned in the third of these well-known laws of physics?

KEPLcRS FIddT iAW ecYc hHec adu OrBug ey hVbit PLsNgm oS ff fjagnhf WenH bbg iUq sg Odh cF fme dfCv

egmyffa kijpNd vql DffmqszgS doW kHd garbtnpgmvbd dF kx nBJdCe xdLjcpe co uic McaS knD jHe FjRcE ACgecG ON IT

THE mmIRD LAW OF THERMODYNAMwCS GIVst xHe kNoRxPY iF nqsnx Ay kjMsivmTUio jjPnOACHlS ZERO

Posted in Physics World at 25 Puzzle | Tagged , , , | 212 Comments | Permalink
View all posts by this author  | View this author's profile