Cost-cutting makes new coins more attractive

DIG in your pockets for a few 1p or 2p coins, and pick out those minted last year. They have a surprising property new to British coinage - they are magnetic.

The coins' magnetic properties are weak and last only as long as the coin is in contact with the magnet. Nevertheless, the property can be exploited in numerous intriguing games.

Robin Willson, Professor of Biochemistry at Brunel University, has devised several such games since he discovered the coins' special characteristics over Christmas. He has applied for patents on three of his latest ideas - all potential executive toys. One is a 'magic box' that enables you to 'pick winners' by hiding a magnet inside a box filled with coins.

Professor Willson discovered the phenomenon when he found a magnetic keybox with a mysterious object stuck to its underside in his garden. This turned out to be a coin.

'I knew it couldn't be a British coin, because these are not magnetic,' Professor Willson said. 'But on closer examination, it turned out to be a 1p piece . . . I thought it must be a forgery.'

Apart from patenting his ideas, he has also contacted the Science Museum, which is keen to incorporate the coins' intriguing properties in one of its public exhibitions. He tried out his new games on the children at St Bartholomew's hospital in London and they were immediately fascinated. The explanation for the coins' magnetism is straightforward. In its September 1992 issue of coins, the Royal Mint changed the composition of the metal it used to make its 1p and 2p coins. Prior to 1992, these coins were made of bronze (97 per cent copper, 2.5 per cent zinc and 0.5 per cent tin). From September 1992 the composition changed to mild steel coated with copper. Steel, with its iron base, is very weakly magnetic.

The change was an attempt to cut the costs of producing the coins. The cost of producing conventional bronze pieces had already exceeded their face value, the Royal Mint said.

Other European coins, including all Dutch coinage, are capable of being magnetised.

(Photograph omitted)

Start your day with The Independent, sign up for daily news emails
Voices
There will be a chance to bid for a rare example of the SAS Diary, collated by a former member of the regiment in the aftermath of World War II but only published – in a limited run of just 5,000 – in 2011
charity appealTime is running out to secure your favourite lot as our auction closes at 2pm today
News
people
News
Elton John and David Furnish exchange marriage vows
peopleSinger posts pictures of nuptials throughout the day
News
File: James Woods attends the 52nd New York Film Festival at Walter Reade Theater on September 27, 2014
peopleActor was tweeting in wake of NYPD police shooting
PROMOTED VIDEO
Have you tried new the Independent Digital Edition apps?
ebooks
ebooksA year of political gossip, levity and intrigue from the sharpest pen in Westminster
Sport
Martin Skrtel heads in the dramatic equaliser
SPORTLiverpool vs Arsenal match report: Bandaged Martin Skrtel heads home in the 97th-minute
News
newsAstonishing moment a kangaroo takes down a drone
Arts and Entertainment
The Lord of the Rings and The Hobbit director Peter Jackson with his star on the Hollywood Walk of Fame
film
Life and Style
tech
News
people
News
Billie Whitelaw was best known for her close collaboration with playwright Samuel Beckett, here performing in a Beckett Trilogy at The Riverside Studios, Hammersmith
people'Omen' star was best known for stage work with Samuel Beckett
Latest stories from i100
Have you tried new the Independent Digital Edition apps?
Independent Dating
and  

By clicking 'Search' you
are agreeing to our
Terms of Use.

iJobs Job Widget
iJobs General

Ashdown Group: IT Support Analyst - Chessington

£25000 per annum: Ashdown Group: IT Service Desk Analyst - Chessington, Surrey...

Recruitment Genius: Technical Support Analyst / Helpdesk Support Analyst

£16000 - £19000 per annum: Recruitment Genius: Our client is the UK's leading ...

The Jenrick Group: Finance Manager/Management Accountant

£45000 - £55000 per annum + benefits: The Jenrick Group: Finance Manager/Manag...

Recruitment Genius: Manufacturing Manager

£35000 - £38000 per annum: Recruitment Genius: This is a rare opportunity for ...

Day In a Page

Surrounded by high-rise flats is a little house filled with Lebanon’s history - clocks, rifles, frogmen’s uniforms and colonial helmets

Clocks, rifles, swords, frogmen’s uniforms

Surrounded by high-rise flats is a little house filled with Lebanon’s history
Return to Gaza: Four months on, the wounds left by Israel's bombardment have not yet healed

Four months after the bombardment, Gaza’s wounds are yet to heal

Kim Sengupta is reunited with a man whose plight mirrors the suffering of the Palestinian people
Gastric surgery: Is it really the answer to the UK's obesity epidemic?

Is gastric surgery really the answer to the UK's obesity epidemic?

Critics argue that it’s crazy to operate on healthy people just to stop them eating
Homeless Veterans appeal: Christmas charity auction Part 2 - now LIVE

Homeless Veterans appeal: Christmas charity auction

Bid on original art, or trips of a lifetime to Africa or the 'Corrie' set, and help Homeless Veterans
Pantomime rings the changes to welcome autistic theatre-goers

Autism-friendly theatre

Pantomime leads the pack in quest to welcome all
The week Hollywood got scared and had to grow up a bit

The week Hollywood got scared and had to grow up a bit

Sony suffered a chorus of disapproval after it withdrew 'The Interview', but it's not too late for it to take a stand, says Joan Smith
From Widow Twankey to Mother Goose, how do the men who play panto dames get themselves ready for the performance of a lifetime?

Panto dames: before and after

From Widow Twankey to Mother Goose, how do the men who play panto dames get themselves ready for the performance of a lifetime?
Thirties murder mystery novel is surprise runaway Christmas hit

Thirties murder mystery novel is surprise runaway Christmas hit

Booksellers say readers are turning away from dark modern thrillers and back to the golden age of crime writing
Anne-Marie Huby: 'Charities deserve the best,' says founder of JustGiving

Anne-Marie Huby: 'Charities deserve the best'

Ten million of us have used the JustGiving website to donate to good causes. Its co-founder says that being dynamic is as important as being kind
The botanist who hunts for giant trees at Kew Gardens

The man who hunts giants

A Kew Gardens botanist has found 25 new large tree species - and he's sure there are more out there
The 12 ways of Christmas: Spare a thought for those who will be working to keep others safe during the festive season

The 12 ways of Christmas

We speak to a dozen people who will be working to keep others safe, happy and healthy over the holidays
Birdwatching men have a lot in common with their feathered friends, new study shows

The male exhibits strange behaviour

A new study shows that birdwatching men have a lot in common with their feathered friends...
Diaries of Evelyn Waugh, Virginia Woolf and Noël Coward reveal how they coped with the December blues

Famous diaries: Christmas week in history

Noël Coward parties into the night, Alan Clark bemoans the cost of servants, Evelyn Waugh ponders his drinking…
From noble to narky, the fall of the open letter

From noble to narky, the fall of the open letter

The great tradition of St Paul and Zola reached its nadir with a hungry worker's rant to Russell Brand, says DJ Taylor
A Christmas ghost story by Alison Moore: A prodigal daughter has a breakthrough

A Christmas ghost story by Alison Moore

The story was published earlier this month in 'Poor Souls' Light: Seven Curious Tales'