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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 The Point in Learning Maths?
Have you ever sat in a Maths class wondering when you will ever need to do long division without a calculator? Or silently cursed your Geography teacher while learning about the formation of oxbow lakes? And History? That’s all in the past and irrelevant, isn’t it?
In this series of articles, we will look at some of the subjects we learn at school, and try and answer the question: What’s the point in learning maths?
Let’s start with Maths. It is a fact of life that while some people are good at Maths, for others it is a daily trial. It is, however, along with English and the sciences the subject considered to be the most important. Why? Of course, we all know that it is important to be able to count, and do simple sums, but when, in real life, do we actually use it?
Be a Good Communicator
Have you ever said something that was misunderstood by the person you were talking to? Do you know anyone who sometimes says things in a way that seems rude and abrupt? It is not always the words used, but the way in which they are used.
Good communication is very important. Carolyn Ward explains what it is and how to be a better communicator.
3 Tips to Make your New Year’s Resolution Stick!
So the new year has begun and you’ve made a New Year’s resolution. How can you make sure it doesn’t go out the window by February? Perhaps these tips for sticking to your resolution will help…
New Year’s Resolution Tip #1: Be specific
Lots of people give up on their resolutions because they choose ones that are too big, vague and overwhelming. Whether your resolution is to do more sport, be a better friend, take up photography or anything else, you have a better chance of making it happen if you narrow it down.
For example, if your resolution is to be a better friend, make it your mission to remember your friends’ birthdays and to write a card for them, or to ask them often about what’s going on their lives. If you want to get more involved in sport, find out what sports your school or community offers and decide on a class to take or a team to sign up for. That way you have somewhere specific to start!
What Is the Turing Test, and Why is it Important?
