helium atom which possesses only two electrons. Further, Bohr’s theory was also unable to explain the splitting of spectral lines in the presence of magnetic field (Zeeman effect) or an electric ...

Therefore, electrons cannot be arranged at random, but they must have fixed levels of energy within each type of atom. Bohr's 'solar system' model of the atom is the way that most people think ...

Others took notice and named his theory "big bang." LeMaitre's ideas opened more questions, many of which forced physics and astronomy together: What was that primordial atom like? Why would it ...

You only need a minute amount of matter, say, an atom, to create a tremendous amount of energy. The implications of Einstein's theory were strange, but proved true mathematically and in the real ...

SCIENCE is steadily becoming severely specialised. The proportion of amateurs (in the restricted sense of the word) among original workers of all ranks decreases slowly but surely. The average ...

Therefore, electrons cannot be arranged at random, but they must have fixed levels of energy within each type of atom. Bohr's 'solar system' model of the atom is the way that most people think ...

To begin with, there’s no single quantum theory. There’s quantum mechanics ... which explains the stability of the nucleus at the heart of the atom; and the weak nuclear force, which explains ...

Masaki Kashiwara is the first Japanese person to be awarded the most prestigious prize in mathematics. Mathematician Masaki ...