Atom bombardment ejects what appeared to be hydrogen nuclei. By 1920 he had accepted that the hydrogen nucleus is a distinct particle within the atom and named it proton. Neutrons have no electrical charge and have a free mass of 1,839 times the mass of the electron, or , the heaviest of the three constituent particles, but it can be reduced by the nuclear binding energy. Neutrons and protons (collectively known as nucleons) have comparable dimensions—on the order of —although the 'surface' of these particles is not sharply defined. The neutron was discovered in 1932 by the English physicist James Chadwick.
The Universe in a Single Atom wish for in this endeavor to unify science and religion-you may not like what you find." Arthur Zajonc, president of the Mind and Life Institute states, ""The Universe in a Single Atom" is an open-minded engagement between intellectual traditions, an engagement that enriches our shrinking planet." Critic Lisa Liquori states,"Though the Dalai Lama aims to reach a wide audience and offers a fair, nicely written, and thoughtful treatise, the subject matter will primarily appeal to spiritual types and to altruistic, ethical physicists and biologists. The Universe in a Single Atom The Universe in a Single Atom is a book by