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A Roller Coaster Ride through Relativity
Introduction; Time Dilation; Length Contraction; Relative Velocity; Simultaneity; Adding Speeds Together; The Doppler Shift; Mass Inflation; The Bending of Light; Gravitational Time Dilation; Black Holes; Appendices;
Twinkling of Stars
(National Council Of Educational Research And Training (NCERT), 2014-04)
This document deals with the Twinkling of stars. The twinkling of a star is due to atmospheric refraction of starlight. The starlight, on entering the earth’s atmosphere, undergoes refraction continuously before it reaches ...