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Physical sciences posts

Drop jump Activity

by David, 17 October 2019 | 2 comments

Two matcch box drawers side by side with a ten cent coin in the upper drawer.

Drop the ruler, watch for the jump… that’s the point of drop jump! Can you work out which matchbox tray the coin will fall into?

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Magnifying sound Activity

by David, 3 October 2019 | 0 comments

A man holdiing a pink baloon near his face and a phone at arms length.

A magnifying glass can bend light waves to make an object look bigger. Can you make a magnifying glass for sound waves too?

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Air cannon Activity

by David, 22 August 2019 | 0 comments

Cup with plastic wrap and ticket targets in the background.

Want to reach out and touch something with a puff of air? This tiny air cannon shoots vortexes of air that can be felt from metres away!

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Sugar and sunglasses Activity

by David, 8 August 2019 | 0 comments

Jar with polarised light effect.

Wearing sunglasses while using a computer might seem like a bad idea. But if you use the right glasses, it can make a great experiment!

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Drop the needle! Activity

by David, 11 July 2019 | 0 comments

Flame heating a needle held in place by a magnet.

Think you understand magnets? In this hands-on activity, use a magnet to make a needle float and then fall.

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Stirring an impossible liquid News

by David, 4 July 2019 | 0 comments

Swirling brownish image.

Imagine a swirl of milk in a cup of tea, or a drop of food colouring in a glass of water. The way liquids move and flow is intricate and almost impossibly complex. But that doesn’t stop scientists from trying to understand this movement.

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Microscope: Birds on a wire News

by Jasmine, 6 June 2019 | 5 comments

Pink and grey galahs sitting on powerlines (wires)

Double Helix magazine is looking for your questions! Our Microscope column answers the most intruiging science, tech, engineering and maths queries you can throw at us.

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Upside down bottle Activity

by David, 21 February 2019 | 2 comments

Plastic bottle half filled with water with a screen tied over the opening and the whole thing inverted upside down.

Here’s a classic activity with a showy twist. Surprise your friends by inverting a water bottle without spilling its contents!

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Leaving patterns Activity

by David, 31 January 2019 | 0 comments

a cup of water with plastic over the top and a coin balancing on that.

Written by Elvina Lee Here’s a cool activity that’s perfect for a hot summer’s day! Create a curious pattern with water.

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Leaning fire Activity

by David, 1 November 2018 | 2 comments

Image of a tealight in a small glass jar.

Water in a cup sloshes around if you don’t move it carefully. What about fire? Let’s find out!

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