Calling All (Reluctant) Bookworms
Em is a reader. A bookworm. She always has been, and always will be. Some people love to read, but some people don’t. Which are you? Maybe you are nagged by your parents and teachers for not reading enough. Perhaps reading is a chore, part of your homework assignment that you rush through, without enjoying because it has to be done. Would you like to learn to love reading? Em has some tips for you.
I really love reading. I mean, I really love reading. I learned to read when I was 4 years old, and I’ve never really stopped since. I used to amaze adults with my reading – I read classic Greek literature (translated, obviously) when I was 9 years old.
Comic Book Characters and Diversity
We’re very pleased here at Jump. In the last few months, several of our favourite comic book characters have been changed and redesigned. This isn’t just about new costumes.
It shows that the designers and writers want to make these stories more diverse. After all, not every person in the world is white and male…so it seems silly that superheroes should be!
Read on to find out about the transformations of Batgirl, Thor and others.
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
Exploring Australia: Specsavers, Sunshine and Sexism
