引力透鏡
引力透鏡，萬有引力現象，光通過物體引力場，光綫屈行，亦叫重力透鏡。叫透鏡，查實有啲誤導。佢唔似平時見透鏡，有焦點[1]。佢會生出多重影像，又或成圈等等。皆因光愈近心屈得愈勁，光直向心就成圈，偏離就斷弧。引力透鏡現象，愛因斯坦個廣義相對論有推論[2][3]，一九一二年尚未出版物有提及[4]。牛頓物理學都可計到屈曲，但程度得廣義相對論一半[5][6][7][8]。一九三七年，已推斷銀河星團可能有引力透鏡，一九七九年證實。
現今分類有強透鏡、弱透鏡同微透鏡。強透鏡就似成圈，叫愛因斯坦環。弱透鏡祇能經統計變化得出。微透鏡唔會變形，得光強弱變化。
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[編輯]- ↑ Lodge, Oliver J. (December 1919). "Gravitation and Light". Nature (英文). 104 (2614): 354. Bibcode:1919Natur.104..354L. doi:10.1038/104354a0. ISSN 0028-0836. S2CID 4157815.
- ↑ Overbye, Dennis (March 5, 2015). "Astronomers Observe Supernova and Find They're Watching Reruns". New York Times. 喺March 5, 2015搵到.
- ↑ Drakeford, Jason; Corum, Jonathan; Overbye, Dennis (March 5, 2015). "Einstein's Telescope - video (02:32)". New York Times. 喺December 27, 2015搵到.
- ↑ Tilman Sauer (2008). "Nova Geminorum 1912 and the Origin of the Idea of Gravitational Lensing". Archive for History of Exact Sciences. 62 (1): 1–22. arXiv:0704.0963. Bibcode:2008AHES...62....1S. doi:10.1007/s00407-007-0008-4. S2CID 17384823.
- ↑ Gabor Kunstatter; Jeffrey G Williams; D E Vincent (1992). General Relativity And Relativistic Astrophysics - Proceedings Of The 4th Canadian Conference. World Scientific. p. 100. ISBN 978-981-4554-87-9. Extract of page 100
- ↑ Bernard F. Schutz (1985). A First Course in General Relativity (第illustrated, herdruk版). Cambridge University Press. p. 295. ISBN 978-0-521-27703-7.
- ↑ Wolfgang Rindler (2006). Relativity: Special, General, and Cosmological (第2版). OUP Oxford. p. 21. ISBN 978-0-19-152433-2. Extract of page 21
- ↑ Pekka Teerikorpi; Mauri Valtonen; K. Lehto; Harry Lehto; Gene Byrd; Arthur Chernin (2008). The Evolving Universe and the Origin of Life: The Search for Our Cosmic Roots (第illustrated版). Springer Science & Business Media. p. 165. ISBN 978-0-387-09534-9. Extract of page 165