What is The Point in Learning … History
Have you ever sat in a Maths class wondering if you will ever have to do long division without a calculator once you leave school? 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 this?
Last time we looked at uses of Physics, both in day to day life, and in careers. Today we will focus on History – the study of the past and how our society came to be as it is. Here are some ways in which studying History is useful to us:
Critical Thinking
Thinking by Elisabeth Haslam
When we study history we don’t just learn lists of facts and dates off by heart. We read lots of opinions about what happened and why, and come to our own conclusion. We base these opinions on two types of material, primary sources which are texts and drawings created at the time of the history we are studying, and secondary sources which were written after the event.
Great Women You Should Know… Helen Sharman
Dr. Helen Sharman, the first British astronaut and at 27 the fifth youngest person to be launched into space on the 18th May 1991. Our contributor Annie May Gibbs had the opportunity to meet Dr Sharman and ask her some questions.
6 Sounds That Your Parents Will Recognise but You Won’t
I recently discovered an old phone in an antique shop and realised that today’s kids wouldn’t recognise the sound of the dial turning.
It got me thinking about the other sounds that have disappeared with the advent of new technology. Have a listen to these sounds and try to work out what they are.
Who Invented the First Electric Battery?
When we talk about electric batteries, we often talk about voltage. But did you know that this word is named after the person who invented the first electric battery? First, let’s take a look at what a volt is, and then we’ll find out more about the guy who gave the ‘volt’ its name.
What is a Volt?
A volt is defined as a unit of electric potential and electromotive force, and voltage refers to the number of those units. That sounds a lot more complicated than it is! If you think of the water in a tap being like the electricity running through a wire, the voltage means the amount of pressure. This video is quite long but explains it very well.
Why are Volts Called Volts?
Alessandro Volta
The term actually comes from a name. It was coined in honour of Italian physicist Alessandro Volta, who is recognised as the inventor of the first electric battery. During the 1790s, Volta worked on the theories of electricity of the day.
Volta disagreed with the theory proposed by fellow Italian scientist Galvani that electricity was generated by animal tissue. Instead of experimenting on frogs or other animals, Volta did experiment after experiment with metals.
His persistence paid off, and in 1800, he invented the world’s first battery, known as the ‘voltaic pile’.
The Voltaic Pile
This voltaic pile was simple but ingenious. It consisted of a pile of zinc and silver discs. But alternating between them was a piece of cardboard, or a piece of cloth, that had been soaked in saltwater.
There was a wire that connected the zinc disc on the bottom to the silver disc on the top, and this wire was capable of producing sparks.
What else Did Volta Invent?
The invention of the first electric battery brought Volta the most fame and recognition, but he also made other discoveries. He invented the electrophorus, a device that could transfer an electrical charge to other objects, as well as an electrical condensor, and the voltaic cell.
He is also known for having discovered and isolated methane gas. After his death, the volt and voltage were named in his memory.
What about Galvani?
Luigi Galvani
Yet there is one more twist to the tale. Volta’s longstanding colleague Galvani of the animal electricity theory also left his name in our language. When we say ‘galvanise’ or ‘galvanism’, that is where it comes from.
Despite their differing theories, there was no rivalry between the two scientists. They were both more concerned with the pursuit of knowledge than with whose theory would prove to be right, and it was Volta who first coined the word ‘galvanismo’ in Italian.
Featured Image by Thomas Kelley on Unsplash