Related topics: light

Chromo-encryption method uses color to encode information

In a new approach to security that unites technology and art, EPFL researchers have combined silver nanostructures with polarized light to yield a range of brilliant colors, which can be used to encode messages.

Q&A: Using social science to forecast societal change

Pandemic impacts on people everywhere brought a unique opportunity for social scientists to study and forecast changes in society. The Forecasting Collaborative was founded in 2020 by Dr. Igor Grossmann, associate professor ...

This exoplanet orbits around its star's poles

In 1992, humanity's effort to understand the universe took a significant step forward. That's when astronomers discovered the first exoplanets. They're named Poltergeist (Noisy Ghost) and Phobetor (Frightener), and they orbit ...

Polar bear in fatal Alaska attack was in poor health

A polar bear that killed a young mother and her baby last month in western Alaska was likely an older animal in poor physical condition, but tests came back negative for pathogens that affect the brain and cause aggressive ...

A possible strategy for a tabletop chiral attosecond laser

When molecules form from many atoms, the atoms can combine in different ways. Two forms of the same molecule can have the same composition but have different arrangements of atoms, giving rise to isomers. Some isomers may ...

Why much of Northeast US experiences 'snow drought'

Winter is more than halfway over and many large cities in the Northeast have yet to see their first snow. New York has gone 300 days without substantial snowfall accumulation. Philadelphia, which usually has its first measurable ...

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