Chemists use symbols and formulae to represent elements ... The numbers of subatomic particles in an atom can be calculated from its atomic number and mass number. The periodic table - AQA ...

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Create a Physics World account to get access to all available digital issues of the monthly magazine. Your Physics World account is separate to any IOP acco ...

Why does this number, this concept have its own special day ... who we often give credit for the atomic theory to Democritus. But he had the idea of slicing up shapes into smaller and smaller pieces ...

Uranium (chemical symbol U) is a naturally occurring radioactive element ... It is so dense a small 10-centimetre cube would weigh 20 kilograms. The International Atomic Energy Agency (IAEA) defines ...

It began, largely, as an effort to affirm that the Eucharist was not a symbol or a ritual, but the living presence of Jesus Christ. In recent years I have observed that a growing number of young ...

(What changes isn’t the speed of the light waves, but the number ... of its mass multiplied by the speed of light squared. The equation didn’t help scientists engineer an atomic bomb, but ...

To be honest, I have no clue what I’m looking at beyond the fact that it’s a key object in the World War II-era race to ...

A new estimate of the ghostly particle’s maximum possible mass brings physicists a tad closer to understanding the universe.

Indian astronomers have performed X-ray observations of an X-ray binary designated 4U 1907+09. Results of the observational ...

Weekly Mass attendance in 2007 was at 41%, which means that number has fallen by 12 points. In that year, only 19% of Catholics seldom or never attended Mass, and that number is now 13 points higher.