The puzzle of the 'lost' angular momentum

In a closed physical system, the sum of all angular momentum remains constant, according to an important physical law of conservation. Angular momentum does not necessarily need to involve "real" bodily rotation in this context: ...

Physicists discover special transverse sound wave

Can you imagine sound traveling in the same way as light does? A research team at City University of Hong Kong (CityU) has discovered a new type of sound wave: The airborne sound wave vibrates transversely and carries both ...

Arecibo data still yielding galactic insights

Data collected by the Arecibo Radio Telescope before it collapsed late last year will help astronomers better understand how our local neighborhood of galaxies formed.

Three-dimensionally oriented orbital angular momentum of light

Recently, National Science Review published online the research results on three-dimensionally oriented orbital angular momentum of light from Professor Qiwen Zhan's team at the University of Shanghai for Science and Technology.

Research gives new insight into capitalizing on momentum investing

Every investor is chasing the answer to one question: When should I buy stocks and when should I sell them? It's the elusive formula for timing the market. New research co-authored by Albert "Pete" Kyle, the Charles E. Smith ...

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