Physics

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Do the holes in the banner carried by these Vietnam veterans during an Anzac Day parade in Canberra make any difference? AAP Image/Alan Porritt

Do wind vent holes in banners make a difference? We used a wind tunnel to find out

Attend any ANZAC Day parade and you might see people carrying banners with holes cut in them. They're supposed to cut any drag or wind resistance but do they do any good?
Making waves. Flickr/Max Nathan

Explainer: making waves in science

We find them at the beach, in every sound and light show, the miracle of wi-fi and now in the fabric of space-time itself. But what exactly is a wave?
Einstein claimed that, had he not pursued science, he would have been a musician. Robert and Talbot Trudeau

Good vibrations: the role of music in Einstein’s thinking

Einstein, an accomplished violinist, claimed that, had he not pursued science, he would have been a musician. That's worth reflecting on, in the wake of last week's discovery of gravitational waves.
Massive bodies can send ripples through space time in the form of gravitational waves. NASA

Gravitational waves discovered: top scientists respond

The long awaited discovery of gravitational waves has sent ripples through the scientific world. Here top experts respond to the historic announcement.
When two black holes collide, the resulting gravitational ripples can be felt across the cosmos. Henze, NASA

Gravitational waves discovered: the universe has spoken

The detection of gravitational waves is the final confirmation of Einstein's theory of general relativity, and opens up a new window into the cosmos.
The microprocessors on this wafer of silicon have transistors measuring in the nanometres. Shutterstock

Electronics are getting small, and that is causing big problems

As the components in electronic devices are shrinking to the nanoscale, even a single atom out of place can disrupt their function. But this also presents an opportunity to make them even better.

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