Fundamental forces – the Universe with Professor Lisa Harvey-Smith
Impossibile aggiungere al carrello
Rimozione dalla Lista desideri non riuscita.
Non è stato possibile aggiungere il titolo alla Libreria
Non è stato possibile seguire il Podcast
Esecuzione del comando Non seguire più non riuscita
Fundamental forces – the Universe with Professor Lisa Harvey-Smith
-
Letto da:
-
Di:
A proposito di questo titolo
Let’s explore the nature of the Universe with five fun and fascinating fast facts about the four fundamental forces, an interview with Professor Lisa Harvey-Smith, an astrophysicist who knows a lot about the Universe, and a surprising paper folding activity for you to try yourself at home.
Presented by Jenny Lynch and Matilda Sercombe. Written and produced by Jenny Lynch. Music by Purple Planet Music. Sound effects by Pixabay.
Creative Science: https://www.creativescience.com.au
Facebook: @creativescienceaustralia
Instagram: @creative_science_australia
Episode content:
00:00 Introduction and fast facts
05:11 Interview with Professor Lisa Harvey-Smith
11:29 Paper folding activity
Professor Lisa Harvey-Smith: www.lisaharveysmith.com
Future You: www.futureyouaustralia.com.au
Paper folding activity
How many times do you think you can fold a piece of paper in half?
You will need: a long piece of toilet paper.
- Lay the toilet paper out on the floor and fold it in half lengthways. That’s one fold.
- Keep folding the toilet paper in half over and over again and remember to count each fold. After 4 or 5 folds, the bundle of paper will be getting fairly thick. Can you keep folding?
- Keep folding until you cannot fold the paper in half anymore.
What’s happening?
The toilet paper is pretty thin, but every time you fold it in half, the thickness of the bundle of paper doubles. After one fold, it is twice as thick as the original toilet paper. After the second fold, the bundle is 4 times as thick. After the third fold, the bundle is 8 times as thick, then 16 times, and then 32 times, and after the sixth fold, the bundle is 64 times thicker than a single sheet of toilet paper.
The current world record for folding a piece of paper is 12 times and the record was set in 2002 by Britney Gallivan, a high school student in the United States. Britney used mathematical equations to work out the size and thickness of the paper she needed to achieve the record, and the tissue paper she used was over one kilometre long! After the 12th fold, the bundle of paper was 4,096 times as thick as a single layer of tissue paper.