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| | #:This has nothing to do with global warming. | | #:This has nothing to do with global warming. |
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| | + | #:'''Update 2:''' Gravitational waves have been detected directly through LIGO: the Laser Interferometer Gravitational-Wave Observatory. |
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| | + | #:First detection on 14 September 2015. See LIGO Scientific Collaboration and Virgo Collaboration, "Observation of Gravitational Waves from a Binary Black Hole Merger," Physical Review Letters, 116, 061102 – published 11 February 2016. |
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| | + | #:Second detection on 26 December 2015 (the "boxing day event"). See LIGO Scientific Collaboration and Virgo Collaboration, "GW151226: Observation of Gravitational Waves from a 22-Solar-Mass Binary Black Hole Coalescence," Physical Review Letters, 116, 241103 – published 15 June 2016. |
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| | + | #:Third detection on 4 January 2017. See LIGO Scientific and Virgo Collaboration, "GW170104: Observation of a 50-Solar-Mass Binary Black Hole Coalescence at Redshift 0.2," Physical Review Letters, 118, 221101 – published 1 June 2017. |
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| | + | #: So, in this respect, gravitational waves ARE like global warming: both are true, verified, factual phenomena, which exist whether or not any particular person wants them to exist. As John Adams pointed out in 1770, "Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passions, they cannot alter the state of facts." |
| | #''The discontinuity in momentum as velocity approaches "c" for infinitesimal mass, compared to the momentum of light.'' | | #''The discontinuity in momentum as velocity approaches "c" for infinitesimal mass, compared to the momentum of light.'' |
| | #:The formulas for velocity, momentum, and mass can in fact be written in such a way that they appear to have discontinuities, just as the tangent function has discontinuities while the underlying sine and cosine functions do not. But they can also be written in a form that does not show discontinuities. | | #:The formulas for velocity, momentum, and mass can in fact be written in such a way that they appear to have discontinuities, just as the tangent function has discontinuities while the underlying sine and cosine functions do not. But they can also be written in a form that does not show discontinuities. |