In laboratories from Brazil to Munich, researchers are learning to grab matter with sound alone, sculpting ultrasonic waves ...

For the first time, physicists have simulated what objects moving near the speed of light would look like — an optical illusion called the Terrell-Penrose effect. When you purchase through links on ...

An atom is electrically neutral which means that there are identical numbers of protons and electrons. Positive charge of protons is composed of negative charge of electrons. It has no electrical ...