Archives for category: Physics

German researchers have created devices that could fit into a shoe and harvest power from walking – this could power wearable sensors or even a self-lacing shoe. BBC News

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Have a look at this project on BBC’s iWonder website.

When lightning hits sand, it can reach more than 1800 degrees C and forms fulgurites, tubes and structures of natural glass formed from the silicates in the sand. You can even make your own, but please be careful…

A photo allegedly about what happens when lightning hits sand has gone viral – but it’s not real – read here to find out why.

All tap drips are the same shape… this has been known in theory since 1996, but researchers have finally been able to see it (and so can you, on this video).

Read the original paper in Physical Review E.

 

A single atom can throw a shadow, and researchers have captured it as an image.

The shadow of an atom

Credit: Centre for Quantum Dynamics

Thanks to Mr Barlow’s Blog.

As always, Olympics opening ceremonies include fireworks and today’s was no exception. Fireworks use a lot of science – for example, particle sizes control the rate of burn, different colours are created by using different metals, and the sounds and shapes depend on how the chemicals are packed.

Olympic Games 27 July – 12 August

Scientists are working on invisibility cloaks for light, sound, water and even earthquakes. The light-bending fabric (see the abstract) made objects invisible to the human eye.

Researchers at Cern have found a Higgs boson-like particle at the large hadron collider (LHC). If confirmed, this will be the outcome of a 45-year search, and could help us understand the unexplained dark matter and dark energy in the universe. Such a brilliant piece of science!

Light didn’t appear until half a million years after the big bang, when the photons could move around freely.

From 20 Things You Didn’t Know About… Light from Discover Magazine

The shortest amount of time is called Planck time, and is 0.0000000000000000000000000000000000000000001 second.

alarm clockFrom 20 Things You Didn’t Know About… Time from Discover Magazine

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