Art & History, Science, Nature and Tech

The Clifton suspension bridge: designed by a woman, built by Brunel

One of the best known landmarks in Bristol, UK, the Clifton suspension bridge first opened in 1864. It was built by the famous British engineer Isambard Kingdom Brunel, but it has recently become public knowledge that it was designed by a woman. Our science editor Sam Gouldson explains who she was and why her work isn’t more widely known.

Who really designed the bridge?

The Clifton suspension bridge was designed by a woman called Sarah Guppy. She was born Sarah Beach in 1770, but when she married her husband Samuel Guppy she took his name. She was one of the great British inventors of her time and the bridge isn’t the only thing she came up with.

What else did she design?

The invention that earned Sarah the most money was her device to prevent barnacles forming on the hulls of ships. Without barnacles the ships would be able to cut better through water and travel more quickly, and the Royal Navy paid her £40,000 for it. That may not sound like much for such a valuable design, but today it would be more than £2.3 million. Her other inventions included a kettle that not only boiled water for tea but could cook an egg and keep toast warm, a candle holder that could keep candles alight for longer and a way of treating boats so that they were more watertight. She also came up with the idea of planting willow and poplar trees on the embankments of new railways, to hold the earth together and prevent landslides.

Why isn’t she more famous?

Sarah lived during the Georgian and Victorian eras. In those times married women weren’t allowed to own property in their own name, and intellectual property such as Sarah’s inventions were no different. Her husband had to file the patents on her behalf, as the property of the Guppy family. The patent for her method of piling bridge foundations in order to create a new kind of bridge was filed in 1811, but she refused to charge others to use the idea because she felt it was for the benefit of the public. Thomas Telford, a civil engineer, used her design to build the Menai bridge in 1826, and when the competition to design the Clifton bridge was announced Sarah gave her work to Brunel. When she wrote to him to suggest the use of willow and poplar trees to reinforce railway embankments, she explained that she didn’t want the credit for her idea because she felt that women “must not be boastful”.

Featured image: Sage Solar/Flikr

Home, Health & Style, Written By You

Make Up For Girls – Is It Necessary? Written By You

At school today I was talking to a friend and he was telling me about the random thoughts that he sometimes thinks about. One of the many philosophical thoughts that were swooping round in his crowded head was; ‘why do girls wear make-up and boys don’t?’

Then that got me thinking. Boys have every right to wear make-up just as much as girls have the right not to. Both genders try to make the best of their bodies by doing exercise, being healthy and wearing nice clothes as well as many other things.

Science, Nature and Tech

Things that make you go poo….

After talking about bones in my last article, I thought I’d go on to talk about poo, or at least how it’s made.

I like eating. I think a lot of people do. Biscuits are a particular favourite…chocolate Bourbons especially. But how do we get from biscuit, or apple, or stick of celery to the brown stuff we call poo.

Well, it’s thanks to the digestive system, which starts at the mouth, and runs all the way to our bottoms. So let me take you on a guided tour.

Science, Nature and Tech

SCIENCE NEWS – Discovery of An Underground Ocean

Earth’s Underground Ocean

In 1864 the French author, Jules Verne, published his novel “Journey To The Interior of the Earth”. In this book 3 men explore volcanic tunnels that lead miles beneath the Earth’s surface, and have a number of strange encounters along the way. One of these is the discovery of a massive ocean, deep underground. Now, 150 years later, it seems that Monsieur Verne’s imagination may have been more accurate than he knew.

An enormous reservoir of water, roughly 3 times bigger than all of the Earth’s oceans put together, has been detected 400 miles below the surface. The water is trapped inside a layer of blue rock called ringwoodite, in the layer of hot rock between the Earth’s core and its surface) that is known as the mantle.

School & Career

So You Want to be a … Diplomat?

When you think of a diplomat, what do you imagine? For some, it will be posh frocks and parties. Others will think of exciting spying missions in exotic countries – Our Man in Havana, or perhaps Our Woman in Harare? If you want to be a diplomat, we have some great advice for you today. This was written from the viewpoint of UK Foreign Office applicant, but much of this will apply to citizens of other countries too.