Special relativity deals with physical extremes. It governs the behaviour of subatomic particles zipping around powerful accelerators at close to the speed of light and its equations foresaw the conversion of mass into energy in nuclear bombs. A paper in Physical Review Letters, however, reports a more prosaic application. According to the calculations of Pekka Pyykko of the University of Helsinki and his colleagues, the familiar lead-acid battery that sits under a car’s hood and provides the oomph to get the engine turning owes its ability to do so to special relativity.
Most electric car charging is done at night. A grid powered mostly by renewable energy might not be able to meet demand, but there is a solution.
Sigmund Freud developed the decidedly unscientific principles of psychoanalysis in a time when most psychologists were trying to join the ranks of chemists and medical doctors.
The Big Bang is commonly misunderstood, warping our understanding about the Universe’s size and shape.
Expressing gratitude encourages others to continue being generous, promoting a cycle of goodness.