The alternative text for this image may have been generated using AI. Removing the light source causes the rotation to resume, this time in the opposite direction. The textures always rotate clockwise ...

The interaction volume of a characteristic X-Ray emission can be seen in Figure 1. Typical EDS analysis in an SEM is carried out at relatively high energy (greater than 10 kV), which results in a vast ...

Quantum tunnelling (or tunneling) is the quantum-mechanical effect of transitioning through a classically-forbidden energy state. Consider rolling a ball up a hill. If the ball is not given enough ...

After Christie Coombs' husband was killed on Sept. 11, 2001, friends, relatives and strangers stepped up to help her family. They brought them food, took them to sporting events and concerts and ...

The cover shows a splendid treefrog (Cruziohyla calcarifer) in Costa Rica. The biological processes of ectotherms, such as amphibians, insects and fish, are directly affected by temperature, which ...