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
You Can Be Wonder Woman! Written by You
Helen is 14 years old and lives in Greece. She has written for us about being a wonder woman.
8 Supermarket Tricks to Make Your Parents Spend More
You might have noticed that many supermarkets have a similar layout. This is no coincidence. Researchers have spent many years working out how to set out the store in order to get customers to spend more! See how many of these supermarket tricks you recognise, the next time you go shopping with your parents!
Huge Trolleys
Shopping trollies are deliberately MUCH larger than needed for a weekly shop, which encourages customers to buy more. In fact, they’ve been getting bigger and bigger in the past few years.
The Bakery at the Entrance
That smell of freshly baked bread? Not only does it make you want to buy a yummy loaf, it also makes you hungry. It is well known that if you go shopping when you are hungry, you buy more!
Tempting Fruit and Veg
After the bakery, comes the fruit and veg section. This often strikes me as a bit daft – by the time I get around to tins and packets of pasta, my salad is squashed at the bottom of the trolley! The bright colours tempt customers, and lots of supermarkets present fruit and veg in baskets or crates, to make it seem like they’ve come straight from the farm! Once you’ve filled your trolley with healthy produce, you’ll feel better about the packets of biscuits and crisps that come later!
Essentials Around the Store
Just popping in with your parents to quickly to pick up some eggs, or milk? You might notice that these essentials, and others like sugar, salt and flour, are spread around the store. The supermarket planners want you to walk around the store as much as possible, passing all those tempting special offers at the end of the aisles.
End of Aisle Offers
The shelves at the end of the aisles are the ones that we pay most attention to, and so supermarkets stack their special offers there, to persuade you to buy them. These are often things like fizzy drinks, that you might not normally purchase.
Loyalty Cards
Supermarkets don’t just give their customers loyalty cards to encourage them to come back to their stores. They also use the data (information) collected to target their advertising better. If your parents have a loyalty card, have a look at the next letter they receive to see if they are giving discounts on products that your family often buy. Have a think about what the supermarket would know about your family – if you have a pet, when you have birthdays (e.g. if you buy a cake in the store), what toys you like, which interests you have (e.g. your parents bought a magazine about traveling to Italy).
Sweets at the Checkout
Ok, hands up if you’ve ever asked your parents for sweets when you were at the checkout! In Germany, they have a word for this – Quengelware. The word is made up of “quengeln” which means “to whine” and “Ware”, which means products. Products that make kids whine or grump at their parents, who are fed up with the hassle of shopping and give in to their kids’ demands! Some supermarkets now advertise that they have lanes without sweets, so that parents can avoid this argument.
Kids’ Products at Your Eye Level
Talking of kids in supermarkets, did you ever notice that products aimed at kids are displayed at your eye level? The cheese strings are placed at that height in the hope that you will ask for them!
How many of these supermarket tricks did you recognise? Next time you go shopping, take a good look at how the store is laid out and see if you can find some more.
Early English Writing – Runes and the Futhorc
Did you know that English hasn’t always been written using the alphabet that we know today? There have been several changes in the way we write over the centuries. We shall start by looking at the runic script. You may already have heard of runes, and perhaps you know that the term refers to some form of writing. We’ll look at runes and the early English alphabet called Futhorc.
Runic Script
First of all, what are runes? Contrary to what legend and hazy modern stories may tell us, runes are not magical, and they are not an exclusive part of an ancient Celtic religion or only associated with druids. Neither are they symbols of the mysterious or spiritual. It is very simple. Runes are letters.
Runic script is a system of writing that is surprisingly close to what we use today in its concept: runes are the letters in a set of alphabets (sometimes called ‘runic alphabets’). These alphabets were used to write Germanic languages. Not simply German as we know it today, but other languages in the same family. This means that it includes English. In fact, the earliest form of writing for English was runic.
The very early form of English that evolved from a language we call Proto-Germanic, which we believe gave rise to many other languages such as German, Dutch, Swedish and others, is known by the term Old English and sometimes also Anglo-Saxon. The second term reflects the names of the Germanic tribes which are believed to have formed the main group of speakers that arrived on the British Isles to displace Celtic languages. It is this early form of English, Old English, which was written in runes.
The Futhorc or Fuþorc
The version of runes used to write Old English is known as the Futhorc. It was developed from the older system of runes used to write other, earlier West Germanic languages, known as the Futhark (fuþark). This Futhark consisted of 24 runes, and the early English speakers found it necessary to expand that and add extra runes to reflect the changes in pronunciation, or the sounds that gradually became part of the language.
They started by adding two extra runes, and this gradually increased until the Futhorc consisted of as many as 33 runes, or letters. You may be thinking that this is rather a lot – but then consider that our modern alphabet uses combinations of more than one letter in order to represent one sound, such as ‘th’ or ‘sh’ and so on. The Futhorc has a separate letter, the thorn þ, to represent ‘th’.
Now, in modern English, we use the Latin alphabet with a few modifications to write our language. The Latin alphabet was first adapted from the Etruscan alphabet, which was in turn derived from the Greek alphabet, and this is where we get its name from.
We call it ‘alphabet’ from the first two letters, A and B, which in Greek are alpha and beta: alphabet. So what about this ancient runic system? Where does the name ‘futhorc’ come from?
There is nothing mysterious about it. It is not an arcane word with some sort of symbolic meaning requiring years of study to understand. When we break it down, it is the same idea as the alphabet. The name ‘futhorc’ derives, or comes from, the first six letters of the runic alphabet. These are feoh (F), ur (U), thorn (TH), os (O), rad (R) and cen (C); FUTHORC, as you can see.
It is essentially the same concept as the alphabet that we use today: each rune, or letter, was used to represent a phoneme, or sound, the basic building blocks of our words.
The Futhorc was used for several centuries to write down English, and for a while when the Latin alphabet was first used for English, the two were both in use at the same time. You can even see some early monuments which have both systems of writing side by side!
Runes were used from around the fifth century to the ninth or tenth centuries in English, although the Germanic Futhark is much older than that.
In our next post, we’ll take a look at the Latin Alphabet, and tell you where you can go to take a look at RL examples of the Futhorc and the Latin Alphabet.