The last time Dr Matthew Piccaver wrote for Jump! Mag, it was on the topic of poo, and today he’s going to tell you a bit about the part of your body that you might just have wrinkled in disgust… the nose! Find out how noses work but don’t get too comfortable, because it snot over yet …
Most scientists believe that the Universe began in a Big Bang around 14 billion years ago. The entire Universe was inside a bubble thousands of times smaller than a pinhead, and was hotter and denser than anything we can imagine.
When the explosion called the Big Bang happened, the Universe as we know it was born. In a fraction of a second, the Universe grew from smaller than a single atom to larger than a galaxy. It kept on growing, and is still expanding today.
Now researchers in America think they have found traces left in the sky that prove this that the Big Bang did really happen. It takes the form of a distinctive twist in the oldest light detectable with telescopes. These twists of light are called ‘gravitational waves’ – the effect is a little bit like how waves form on the surface when you drop a big stone in a pond. However, you also have to imagine that the Big Bang formed the pond itself.
The team leading the project, known as BICEP2, has been using a telescope at the South Pole to make detailed observations of a small patch of sky. The aim was to find evidence of ‘inflation’ – the idea that the cosmos grew rapidly in its first trillionth, or trillionth of a trillionth of a second – growing from something unimaginably small to something about the size of a marble.
The leader of the team, Prof John Kovac of the Harvard-Smithsonian Center for Astrophysics said:
“This is opening a window on what we believe to be a new regime of physics – the physics of what happened in the first unbelievably tiny fraction of a second in the Universe.”
Over the coming years, scientists will work hard to investigate every aspect of this discovery. Other experiments will be carried out to see if they can replicate the findings of the American team. If this research is confirmed, it will be one of the greatest scientific discoveries of our time.
EDIT
Dr Sarah Bearchell drew our attention to this video, which explains the concept of gravity and gravitational waves with the help of a towel, an apple and a ping pong ball. Check it out
It wasn’t an easy life, living in Tudor times. You can find that out by reading about it in a variety of places.
But I found it out by living it at Kentwell Hall.
We do reenactment. We being our entire family, from my son who was a Tudor baby aged 4 months last summer, through to my partner Tim.
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.
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.
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’.
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.
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.
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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Their aim is to bring you all the latest news, views, events, opportunities, careers, interesting stuff, fun stuff and freebies to help girls find inspiration for future careers. Sign up for their newsletter here.
The CHRISTMAS LECTURES® are entertaining and informative science events for young people, broadcast on UK television every year. You can watch them online here. Prepare to be amazed
UPDATE
The Royal Institution have just launched Experimental, a series of YouTube videos with great and simple experiments for parents and children to try at home. Find their YouTube Channel here.
Real science, online – The Zooniverse is home to the internet’s largest, most popular and most successful citizen science projects. You can choose to help researchers characterize bat calls, or explore Mars, without leaving your house.
Six awesome courses in one awesome channel: John Green teaches you US History and Hank Green teaches you Chemistry. Check out the playlists for past courses in World History, Biology, Literature, and Ecology
Bill Nye is a scientist, engineer, comedian, author and inventor. His mission is to make science fun, and help people understand the science that makes our world work. Here are the Home Demos, the experiments you should try at home sometime. Keep clicking around and you’ll find the Episode Guides.
Edheads is an online educational resource that provides free science and math games and activities that promote critical thinking. You can design a mobile (cell) phone, repair a weakened aorta or learn about simple machines, and much more.
This is a site that links to lots of other sites – we loved the Amusement Park Physics – design your own roller-coaster but be careful because if you get the science wrong… DISASTER!
Silvia is a young girl from California, USA and she’s been making Super-Awesome webshows on making cool stuff since 2010. She demonstrates science experiments, and great craft projects. You’ll never be bored, when Silvia is around!
The kids pages on Nasa are awesome, and that is before we get to the videos of ELMO at NASA. Science and Sesame Street. It doesn’t get much better than this.
Veritasium is a science video blog featuring experiments, expert interviews, cool demos, and discussions with the public about everything science – these are at times more advanced, but well worth a look.
We love the short and snappy servings of science from the SciShow team.
We just had to include this one, as the solar system explanation is so brilliant even our science dunce editor understood it!
Engineering is Elementary is a project of the National Center for Technological Literacy at the Museum of Science, Boston (MOS). They have fantastic resources for teachers and home-ed families, on a range of topics. Some of the content is free to use, and the teaching guides and stories can be purchased on the site.
The National Science Teachers Association has a great list of books about science
National Geographic is a great website with a huge range of articles and fun stuff
Cool music and science from They May Be Giants and the Here Comes Science CD
Woodlands Resources Science for educational and fun activities
How Stuff Works – well, just that really
This is a bit of a niche Science subject, but really cool – Skateboarding Science
If you like computers and want to learn how to make your own programmes, BBC had this cool game toolkit so that you can make your own games and Code.org can teach you to code, as can Scratch
If your parents are on Twitter, get them to follow @realscientists – a rotational twitter account featuring real scientists, science writers, communicators and policy makers talking about their lives and their work. Tweeters from different fields of science and science-related fields.
How To Grow Your Own Geek is a podcast created to share a love of geeking and parenting, and to provide advice on how to combine the two. Check out their Science and History Podcasts for Kids
Coding Resources by DeVry Bootcamp has plenty of interesting resources for older or more advanced students.
