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Tiny microphones provide a new way to eliminate background noise

By innovation2

Image by visual.dichotomy via Flickr

Opting for the quiet life
MANY of those who talk loudly into their mobile phones are just inconsiderate show-offs for whom no punishment is too evil. Sometimes, however, there is an excuse. Noise in the background can make it hard for your interlocutor to hear what you are saying. [...]

Tiny ‘nuclear batteries’ unveiled

By innovation2

Researchers have demonstrated a penny-sized “nuclear battery” that produces energy from the decay of radioisotopes.
As radioactive substances decay, they release charged particles that when properly harvested can create an electrical current.
Nuclear batteries have been in use for military and aerospace applications, but are typically far larger.
The University of Missouri team says that the batteries hold [...]