What is the Mexican Day of the Dead (Día de los Muertos)?
On 1st and 2nd of November, Mexico celebrates its Day of the Dead (Día de los Muertos). This is a festival that begins on 28th October and ends on a public holiday on 2nd November. During this time, Mexicans believe that the deceased have permission from God to visit friends and relatives on earth, and once again enjoy the pleasures of life. It isn’t seen as a time of sadness and mourning but as a celebration of life.
Where Does the Tradition Come From?
The Aztecs believed that death was just a part of the circle of life and offered gifts to the goddess Mictecacihuatl (“Lady of the Dead”) for deceased children and adults. This tradition was incorporated into the Catholic celebration of All Saint’s Day and All Soul’s Day when the Spanish conquered the country. You might know All Saint’s Day by its other name – Halloween!
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
The Fall – A Short Story in Three Parts – Part One
This is a short story in three parts, by 10 year old Alice
My mates are all leaning against the peeling black-painted gate, chatting and laughing, while I stand, nearby, twitching nervously.
“Oi,” Jules waves for me to come over to him. “Now, I have a suggestion. Kieran here,” he pauses, gesturing to me by his head, “is new to our gang. What about we see if he is worthy, eh?”
They all chuckle, nodding, with sly grins. I don’t understand.
Jules raises his eyebrows. Jules’s blonde curls, flapping in the wind, obviously getting in his eyes, always lure girls in.
A stout boy, leans over, and Jules whispers in his ear. He laughs, and tells the other boys. But not me.
“I have a friend up those steps, Flat 33. Go get some skunk for us, okay?” Jules flings a several notes at me, and I bend over to pick up the missed one.
I have no idea what skunk is. I have no idea what this money is for, what is up those stairs, or what is on the third floor. And I especially have no idea what is on Flat 33. I don’t really want to have an idea what any of them are.
I pause, trying to work out my odds.
“Awh, are you scared? Awh… lil’ baby Kieran is scared…” a spotty boy says, patronisingly.
I flatten out my fleece, and finger my ear piercing that I never really wanted. “Am not,” I say limply, and head towards the stairs Jules was pointing me towards, shivering in fear. Once I am out of the gang’s sight, I scurry to the top of the stairs, and flatten myself on the nearest wall. I check my surroundings. Grimy white walls, dusty steps, bent rails, squawking of birds, faint clomp of high-heels, and a strong musty smell.
Hearing the gang laughing, saying I will never do it, I straighten my back, and I stomp up another two flights of stairs. Once I get to the second floor, I wince. I just want to cower into a ball, and fly back down the stairs, and go right back home – no, not home, to somewhere safe. But I can’t. Ican’tIcan’tIcan’t! While still hunched, I stare along the balconies either side of me. Squinting terribly, I can make out three doors on my right and one says ‘16’. It must be on the other side. Turning towards the left, I hope for no risks. I am still clutching a crumpled collection of notes. I decide this isn’t a safe call, and stuff them into my fleece pockets, trembling. I reach Flat 33. I freeze. Gathering up every last morsel of courage inside me, I force my hand forward. It shoots forward, hitting a single bash on the door.
All I can hear is grumbling, creaking, and soft footsteps. My heart misses a beat as the door opens.
He looks me up and down. “Here to buy?”
I nod my head. He ushers me in. His flat smells strongly of that smell of the wood chip in a children’s playground, and a tomato plant. It made me feel slightly light-headed it was so strong. An over-powering smell of cigarettes oozed from the walls, making me feel dizzy and sick. I try not to breathe it in, but I soon run out of breath. It’s horrible.
“So, who told you about this place?” the man said, his voice crackly with age. He had a pipe in his mouth, sticking out diagonally.
“Jules, he said you were a friend to him,” I say, trying to mimic his bold Cockney accent.
“Ah yes, that arrogant Jules. Brash young thing he is,” he said. “So, what do you want?”
“Skunk,” I say, uncertainly.
He gives me a look, with no real emotions, or indications of what he is thinking. He picks out a small plastic bag, filled with a murky green powdery substance inside. He lifts up his hands, and raises his eyebrows. He obviously doesn’t think I can pay it. Confidently, I stuff the notes into his palm, beaming.
He shuffles through the small heap of crumpled notes. “You’re five quid off.”
My face sinks. “That was all he gave me.”
“Ah, my prices have risen,” he smirks. “I’ll make him pay it when he next comes. That happened last time, made one of his mates get it for him. Lazy lad he is. He has to pay £10 extra you know… and it’s still rising…”
I let him burble for a bit, while I back towards the door, holding the tiny plastic bag in my clammy hand. When I get the chance, I slip, “Thank you!” in his babble, and leave.
I fled down the flights of stairs, but once I was in the eye-view of the gang, I slowed down and coolly strolled. Jules gave everyone a cigarette, who casually slipped it between their fingers, and filled it with a tiny portion of the murky green powder, and inhaled. I tried to copy everyone with holding the cigarette properly, but it kept on slipping. After I filled it with the last of the green powder, I took a long, anticipated breath.
It was…. calming. It was addictive.
What is the Orionid Meteor Shower?
This October Earth will be passing through the tail of Halley’s comet, which will mean a shower of meteors flashing across the night sky. Our science editor Sam Gouldson explains.
What is Halley’s Comet?
A comet is a lump of rocky particles, ice and dust all bound together like a dirty snowball. When the comet nears a star, its surface transforms from a solid to a gas. The star’s light shines through these gases and makes them visible to observers as a fuzzy cloud around the comet’s centre, and a tail streaming out behind.