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Physical sciences posts

Finding the coldest place on Earth News

by David, 5 July 2018 | 0 comments

Image of buildings in a flat icy landscape.

It’s the middle of winter in our part of the world. And if you live in southern parts of Australia, you might think it’s a bit chilly. But there are places on Earth that are much colder. New research has found places in Antarctica colder than we have ever measured before!

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Faintest touch, lightest force News

by David, 10 May 2018 | 0 comments

Image of the force detector, a metal box with electrodes either end, a lens. Red and orange illustrate the movement of the atom when force is applied.

What’s the faintest touch you can feel? A feather on the back of your hand, a whispered breath in your ear? Scientists from CSIRO and Griffith University just built a device that feels much lighter touches – in fact, it’s the most sensitive force detector on the planet!

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Balloon bus Activity

by David, 22 March 2018 | 2 comments

Photo of a man sitting on a bus holding a red balloon on a string.

When you’re on a bus, corners can push you sideways. But what does it do to a balloon? Grab a balloon and get on board to learn a thing or two about inertia.

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A hole in the heart of Egypt’s greatest pyramid News

by David, 12 January 2018 | 0 comments

Image of a pyramid with tiny people in the foreground.

Built more than 4500 years ago, you’d think there was nothing left to discover inside Cairo’s Great Pyramid of Giza. Think again. Scientists have recently discovered a new chamber deep in the heart of the tomb, all with the help of starlight.

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What’s Fahrenheit? Activity

by David, 15 August 2017 | 0 comments

A thermometer with both Celsius and Fahrenheit measurements.

Do you have friends from the United States? Have you ever found a recipe on the internet with ridiculously high oven temperatures? Do you have a grandparent (or great grandparent) who doesn’t like the ‘new’ way of measuring temperatures? You might need our quick guide to the Fahrenheit scale.

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Green eggs Activity

by David, 13 April 2017 | 0 comments

An egg with a green yolk in a bowl

Time for an Easter trick! There are lots of eggs around at this time of year, but this one is sure to raise some eyebrows. And when you’re finished, you can get your parents to help you cook your green egg, so you can gross out your entire family! Safety: Use clean equipment when handling food….

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Hot top hat!

by David, 18 September 2016 | 0 comments

Perched high atop a giant shiny dish, sits a strange top hat. This hat is filled with high pressure steam, and it’s the secret to efficient solar power that can work even after the Sun sets. Welcome to the world of concentrated thermal energy. For several years, scientists from the Australian National University (ANU) have…

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Kirigami steers solar panels

by David, 15 December 2015 | 1 comments

When you’re installing solar panels, it’s important to point them at the Sun. But the Sun isn’t always in the same place – it moves across the sky over the course of a day. If you can aim the panels towards the Sun as it moves, they can produce up to 40 per cent more power…

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Solar race across Australia

by David, 30 October 2015 | 0 comments

In the latest issue of Double Helix magazine, we feature solar powered cars racing from Darwin to Adelaide. They zoomed to the finish line last week. The winner is Dutch team Nuon with their car Nuna 8!

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Friction frog Activity

by , 6 July 2015 | 0 comments

Make your own crazy climbing frog, using the power of friction. You will need A 20cm x 20cm piece of cardboard Two 5cm long pieces of drinking straw String Sticky tape Scissors Coloured pens, pencils, crayons, paints or textas Other decorations What to do

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