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
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Lots of Socks for World Down Syndrome Day
Do you sometimes wear non-matching socks? When you can’t find ones to match or just because you want to? Well on the 21st March you have the perfect excuse to and Agi is going to tell you why.
Agi has been making videos about her life with her little sister, who just happens to have Down Syndrome, for many years. We asked her to tell us more about this condition, and about life with Magdalena and to share some of her videos with us.
Firstly though who am I?
I’m called Agnieszka (Agi for short) and I am home educated with my little sister Magdalena, who is 7 years old. I have a website which I blog on about our life together and anything else I am interested in. I want to be a filmmaker when I’m older, and you can view lots of films that I’ve made on my website, and Magdalena wants to be an artist. She is one of my best friends. We have loads of fun together, and I don’t treat her any differently or treat her ‘specially’, even though she happens to have Down’s syndrome. Which is where the lots of socks come in…but first, let me explain.
I would never have known this unless my little sister, Magdalena was born with an extra 21st chromosome.
Have you worked out yet why World Down Syndrome day is on the 21st of March?
It’s because people with Down syndrome have three chromosomes on chromosome number 21, instead of the usual two. This is also known as Trisomy 21.
Why is it Called Down’s Syndrome?
So why call it Down’s syndrome? No, it’s not because people with Down’s syndrome are ‘down’ or grumpy, it’s actually because Dr John Langdon Down discovered the condition, and it was named after him.
Lot’s of people my age don’t know what Down’s syndrome is, (actually lots of adults don’t either) and that can make them scared of what they don’t know about, so they ignore Magdalena or talk ABOUT her instead of TO her or say something unkind thinking she won’t understand or be hurt by it. So before I get onto the socks, I want to tell you a bit about what Down’s Syndrome is and what it isn’t!