Facial recognition for coins

Countless historical coins that differ from each other only in details are in storage at German state museums. Unlike paintings, these archaeological artifacts may not be labeled, marked or barcoded. Researchers at the Fraunhofer ...

How two metal detectorists discovered a complete Roman treasure

In 2017, in an ordinary field, two brothers from Brabant discovered more than 100 ancient coins. The Leiden historian who examined the coins concluded that they constituted a genuine Roman treasure. Here follows a reconstruction ...

900-year-old gold coins found in Israel

Rare gold coins and a golden earring have been discovered in the ancient Mediterranean port of Caesarea in northern Israel—possibly left and never recovered as Crusaders conquered the area 900 years ago.

Cryptocurrencies: High volatility and returns

It's been an extremely volatile year for Bitcoin prices. About a year ago, Bitcoin was trading in a range of $4,000 to $5,000. After climbing to a high of just over $20,000 in December 2017, it now seems to be back where ...

Parrondo's paradox with a three-sided coin

Physicists have demonstrated that Parrondo's paradox—an apparent paradox in which two losing strategies combine to make a winning strategy—can emerge as a coin game with a single coin in the quantum realm, but only when ...

New NIST research could bring down the cost of making nickels

Nickels are ubiquitous in American life, tumbling around in pockets, rolling under car seats, and emerging from the back of dryers to be used over and over for countless purchases. But these resilient and somewhat humble-looking ...

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