Fifty years ago, Keldysh introduced an important idea. Treating both gases and solids on the same footing, he showed that strong-field ionization—valence-band to conduction-band transitions in ...

Engineers at the National University of Singapore (NUS) have developed a new way to convert natural gas into a solid form, allowing it to be stored and transported more safely and easily. The process ...

Substances can exist in three states of matter - solid, liquid and gas. Substances can change states. To change the state of a substance energy must be transferred to, or from, the substance. Phew! On ...

Engineers have taken a tip from Medusa, it seems. They have stared down the pesky greenhouse gas carbon dioxide and turned it to stone. The process they used was not as easy as simply eyeballing the ...