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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”.
What is a Stick Bomb?
11-year-old Andre Jefferson explained stick bombs as being, ‘a kinetic chain reaction that is weaved together with jumbo popsicle sticks, that creates tension, and when you take one of the sticks out, it releases potential energy and makes it pop up about this high’.
If you are thinking ‘What?’ then watch the rest of his TEDx talk to find out what a ‘Stick bomb’ is and what makes them jump.
Historical Fiction for Kids – A Book Review
What better way to #jumpintohistory, than to immerse yourself in historical fiction for kids… but where to start?
With so many great titles to chose from, you might find it difficult to plump for one of them. Louise is a life-long bookworm, and lover of historical fiction, and has some great tips.
I have always loved reading fiction books about history, especially books about girls.
I grew up reading fiction books about the lives of girls: Johanna Spyri’s Heidi, L.M Montgomery’s Emily of New Moon and Anne of Green Gables, Louisa May Alcott’s Little Women, and Susan Coolidge’s What Katy Did series. I loved Laura Ingalls Wilder’s Little House in the Big Woods series, which is the story of Laura’s life growing in 19th century America. I always wanted to be Laura and have adventures living in the middle of nowhere surrounded by woods, although I am still not very keen about the lack of indoor plumbing.
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.
I am Not a Tourist, I Live Here – Mexico
