"ICM Registry LLC, the company behind the proposed .xxx internet porn domain, is to sue two departments of the US government for access to documents it claims show the US pressured ICANN into rejecting the domain. The Florida-based startup will sue the Department of Commerce and the Department of State to get them to release documents that they redacted when they responded to a Freedom Of Information Act request that ICM filed last year." - Slashdot.org
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