IN a letter published in NATURE of February 20, p. 264, Messrs. Uhlenbeck and Goudsmit have shown how great difficulties which atomic theory had met in the attempt to explain spectral structure and ...

Language is a means of communicating complex ideas or feelings. Although human language can be verbal or non-verbal, it is more complex than any form of animal communication and reflects the culture ...

Generic formats like JSON or XML are easier to version than forms. However, they were not originally intended to be ...