Google's new office applications, Docs & Spreadsheets, will provide APIs for custom apps. Johnathan Rochelle, project manager: 'We definitely want to build out APIs, especially for the spreadsheets side, as spreadsheets are more data-oriented, but maybe also for the word processor. People will be able to do mashups with our tools for other things, and not be stuck behind our dev cycle for everything they want. If I've already got data somewhere you can't really rely on manual cut-and-paste to make it collaborative. Imagine pulling data from any application you've already got in use... you get that data over to the hosted app, make it collaborative, then bring it back... that's what we'd like to enable at some point. [via 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
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