Getting out of Auto: Understanding ISO on your digital camera

We look at the ISO setting on your camera, and when you should change it

Camera manufacturers increasingly like to crow about ISO ranges when launching a new camera, with high ISO numbers now reaching into the hundreds of thousands. But what do these numbers really mean? Here we look at what ISO is, and how you can use different ISO settings to not only to shoot in varying lighting conditions, but also take more control of your photographs as you move out of auto mode.

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Category: Digital Cameras

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Fighting biofilms by messing with the language of bacteria

The left side shows a biofilm made up of the Klebsiella oxytoca bacteria, while the left ...

If you’ve ever had a vase of flowers develop a stinky slimy film inside, then you’re familiar with biofilms. While these organized gangs of bacteria are unpleasant in such a situation, in medical setting like hospitals, they can be downright dangerous. Biofilms are notoriously difficult to dispatch (think about how hard it is to clean that vase), so researchers at Germany’s Kiel University, in cooperation with colleagues at the Hamburg University of Technology, figured it might be best to stop them from growing in the first place. They focussed their attention on the communication mechanism inside the colony.

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Category: Biology

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Corkscrew-shaped vortex lasers could keep Moore's Law kicking a little longer

Rendering of a vortex laser on a chip

In recent years, concerns that Moore’s Law is about to fall apart have been intensifying as engineers have just about squeezed the maximum amount of processing power possible out of each atom in intricately fabricated silicon chips. But a new study suggests that encoding information using corkscrew-shaped laser beams could help us keep pace with our ever-increasing data demands

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Category: Physics

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