The heaviest element yet, Element 118, has been created in Dubna, Russia by a collaboration of researchers from Russia's Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory in the US. They created the new element by fusing together Californium (element 98) and Calcium atoms. The achievement comes five years after the scandal-plagued retraction of an earlier claim, which was based on fabricated data, that three atoms of element 118 had been produced at the Lawrence Berkeley National Laboratory in California. The achievement was reported on October 9 in the journal Physical Review C (subscription needed to read more than the abstract)."
The short answer is "no", but it is a qualified "no" because there are odd ways of interpreting the question which could justify the answer "yes". Light is composed of photons so we could ask if the photon has mass. The answer is then definitely "no": The photon is a massless particle. According to theory it has energy and momentum but no mass and this is confirmed by experiment to within strict limits. Even before it was known that light is composed of photons it was known that light carries momentum and will exert a pressure on a surface. This is not evidence that it has mass since momentum can exist without mass. [ For details see the Physics FAQ article What is the mass of the photon? ]. Sometimes people like to say that the photon does have mass because a photon has energy E = hf where h is Planck's constant and f is the frequency of the photon. Energy, they say, is equivalent to mass according to Einstein's famous formula E = m
Comments