Opening a letter may seem like a straightforward task, but that’s only in the age of mass-produced gummed envelopes, first invented in the 1830s. For hundreds of years before that, many people relied ...

Sealed letters folded in intricate patterns have gone unread for more than 300 years, but now people have been able to tease out their contents with a combination of X-ray imaging and unfolding ...

Machine learning algorithms have increasingly become integral to gamma-ray spectroscopy, enabling automated feature extraction, classification and quantitative analysis from complex spectral data.