The computer speakers below – tested by What Hi-Fi?'s team of audio experts – all have amplification built-in (making them active or powered), but take note of the connections and specs that suit your ...

Oct. 3, 2024 — A chip-based 'tractor beam' can trap and manipulate biological particles using a tightly focused beam of light emitted from a silicon-photonics chip. The device could help ...

© 2024 BBC. The BBC is not responsible for the content of external sites. Read about our approach to external linking.

At close: 30 September at 16:00 GMT-4 ...