head	1.1;
access;
symbols;
locks; strict;
comment	@# @;


1.1
date	2018.03.14.16.52.39;	author root;	state Exp;
branches;
next	;


desc
@This document (4.2 కార్యకలాపం : పారలాక్స్ (ఊహ)) is re-created by blue-mouse-cc on 20 August 2017
@


1.1
log
@Initial revision
@
text
@{
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    "annotations": [],
    "attribute_set": [],
    "author_set": [],
    "collection_set": [],
    "comment_enabled": null,
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\u0c1a\u0c47\u0c38\u0c41\u0c15\u0c4b\u0c02\u0c21\u0c3f. \u0c17\u0c4b\u0c21 \u0c28\u0c41\u0c02\u0c1a\u0c3f \u0c15\u0c28\u0c40\u0c38\u0c02 10 \u0c05\u0c21\u0c41\u0c17\u0c41\u0c32 \u0c26\u0c42\u0c30\u0c02\u0c32\u0c4b, \u0c26\u0c3e\u0c28\u0c3f \u0c35\u0c48\u0c2a\u0c41 \u0c1a\u0c42\u0c38\u0c4d\u0c24\u0c42 \u0c28\u0c3f\u0c32\u0c2c\u0c21\u0c02\u0c21\u0c3f.</span></p>\r\n\t</li>\r\n\t<li data-fulltext=\"\" data-placeholder=\"Translation\">\r\n\t<p><span style=\"font-size:14px;\">\u0c2e\u0c40 \u0c2e\u0c41\u0c15\u0c4d\u0c15\u0c41 \u0c2e\u0c41\u0c02\u0c26\u0c41 \u0c12\u0c15 \u0c2a\u0c46\u0c28\u0c4d\u0c28\u0c41\u0c28\u0c3f, \u0c2e\u0c40 \u0c2e\u0c41\u0c16\u0c02 \u0c28\u0c41\u0c02\u0c21\u0c3f \u0c26\u0c3e\u0c26\u0c3e\u0c2a\u0c41 \u0c06\u0c30\u0c41 \u0c05\u0c02\u0c17\u0c41\u0c33\u0c3e\u0c32 \u0c26\u0c42\u0c30\u0c02\u0c32\u0c4b \u0c2a\u0c1f\u0c4d\u0c1f\u0c41\u0c15\u0c4b\u0c02\u0c21\u0c3f. \u0c12\u0c15 \u0c15\u0c28\u0c4d\u0c28\u0c41 \u0c2e\u0c42\u0c2f\u0c02\u0c21\u0c3f \u0c2e\u0c30\u0c3f\u0c2f\u0c41 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\u0c15\u0c28\u0c3f\u0c2a\u0c3f\u0c38\u0c4d\u0c24\u0c41\u0c02\u0c26\u0c3f. \u0c26\u0c40\u0c28\u0c3f\u0c28\u0c47 \u0c2a\u0c3e\u0c30\u0c32\u0c3e\u0c15\u0c4d\u0c38\u0c4d<sup>4</sup> \u0c05\u0c02\u0c1f\u0c3e\u0c30\u0c41. \u0c2a\u0c46\u0c28\u0c4d\u0c28\u0c41\u0c15\u0c41 \u0c38\u0c2e\u0c40\u0c2a\u0c02\u0c17\u0c3e \u0c17\u0c4b\u0c21 \u0c2a\u0c48\u0c28 (Y \u0c17\u0c41\u0c30\u0c4d\u0c24\u0c41 \u0c05\u0c28\u0c41\u0c15\u0c41\u0c02\u0c26\u0c3e\u0c2e\u0c41) \u0c17\u0c41\u0c30\u0c4d\u0c24\u0c41\u0c28\u0c3f \u0c17\u0c2e\u0c28\u0c3f\u0c02\u0c1a\u0c02\u0c21\u0c3f.</span></p>\r\n\t</li>\r\n\t<li data-fulltext=\"\" data-placeholder=\"Translation\">\r\n\t<p><span style=\"font-size:14px;\">X \u0c2e\u0c30\u0c3f\u0c2f\u0c41 Y \u0c17\u0c41\u0c30\u0c4d\u0c24\u0c41\u0c32\u0c41 \u0c2a\u0c30\u0c38\u0c4d\u0c2a\u0c30\u0c02 \u0c0e\u0c02\u0c24 \u0c26\u0c42\u0c30\u0c02\u0c32\u0c4b \u0c09\u0c28\u0c4d\u0c28\u0c3e\u0c2f\u0c3f?</span></p>\r\n\t</li>\r\n\t<li data-fulltext=\"\" data-placeholder=\"Translation\">\r\n\t<p><span style=\"font-size:14px;\">\u0c07\u0c2a\u0c4d\u0c2a\u0c41\u0c21\u0c41 \u0c26\u0c36\u0c32\u0c41 2 \u0c2e\u0c30\u0c3f\u0c2f\u0c41 3\u0c28\u0c3f \u0c2e\u0c40 \u0c1a\u0c47\u0c2f\u0c3f\u0c28\u0c3f \u0c1a\u0c3e\u0c1a\u0c3f \u0c2e\u0c33\u0c4d\u0c33\u0c40 \u0c1a\u0c47\u0c2f\u0c02\u0c21\u0c3f. \u0c30\u0c46\u0c02\u0c21\u0c41 \u0c17\u0c41\u0c30\u0c4d\u0c24\u0c41\u0c32 \u0c2e\u0c27\u0c4d\u0c2f \u0c26\u0c42\u0c30\u0c02 \u0c12\u0c15\u0c47 \u0c32\u0c3e\u0c17\u0c3e \u0c09\u0c28\u0c4d\u0c28\u0c26\u0c3e?</span></p>\r\n\t</li>\r\n\t<li data-fulltext=\"\" data-placeholder=\"Translation\">\r\n\t<p><span style=\"font-size:14px;\">\u0c2a\u0c46\u0c28\u0c4d\u0c28\u0c41 \u0c38\u0c2e\u0c40\u0c2a\u0c02\u0c17\u0c3e \u0c09\u0c28\u0c4d\u0c28\u0c2a\u0c4d\u0c2a\u0c41\u0c21\u0c41 \u0c30\u0c46\u0c02\u0c21\u0c41 \u0c17\u0c41\u0c30\u0c4d\u0c24\u0c41\u0c32 \u0c2e\u0c27\u0c4d\u0c2f \u0c26\u0c42\u0c30\u0c02 \u0c0e\u0c15\u0c4d\u0c15\u0c41\u0c35 \u0c05\u0c28\u0c3f 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\u0c38\u0c4d\u0c25\u0c3f\u0c24\u0c3f \u0c2c\u0c3f \u0c28\u0c41\u0c02\u0c21\u0c3f \u0c1a\u0c42\u0c38\u0c3f\u0c28\u0c2a\u0c4d\u0c2a\u0c41\u0c21\u0c41 \u0c28\u0c15\u0c4d\u0c37\u0c24\u0c4d\u0c30\u0c02 \u0c0e\u0c38\u0c4d \u0c28\u0c15\u0c4d\u0c37\u0c24\u0c4d\u0c30\u0c02 \u0c0e\u0c15\u0c4d\u0c38\u0c4d \u0c15\u0c3f \u0c38\u0c2e\u0c40\u0c2a\u0c02\u0c17\u0c3e \u0c15\u0c28\u0c3f\u0c2a\u0c3f\u0c38\u0c4d\u0c24\u0c41\u0c02\u0c26\u0c3f. \u0c08 \u0c38\u0c4d\u0c25\u0c3f\u0c24\u0c3f\u0c32\u0c4b \u0c2e\u0c3e\u0c30\u0c4d\u0c2a\u0c41\u0c28\u0c3f \u0c2a\u0c30\u0c3f\u0c36\u0c40\u0c32\u0c3f\u0c02\u0c1a\u0c21\u0c3e\u0c28\u0c3f\u0c15\u0c3f \u0c1a\u0c3e\u0c32\u0c3e \u0c2e\u0c02\u0c1a\u0c3f \u0c28\u0c3e\u0c23\u0c4d\u0c2f\u0c2e\u0c48\u0c28 \u0c2a\u0c30\u0c3f\u0c15\u0c30\u0c3e\u0c32\u0c41 \u0c15\u0c3e\u0c35\u0c3e\u0c32\u0c3f. \u0c38\u0c42\u0c30\u0c4d\u0c2f\u0c41\u0c21\u0c3f \u0c28\u0c41\u0c02\u0c21\u0c3f \u0c12\u0c15 \u0c28\u0c15\u0c4d\u0c37\u0c24\u0c4d\u0c30\u0c3e\u0c28\u0c3f\u0c15\u0c3f \u0c2e\u0c27\u0c4d\u0c2f \u0c26\u0c42\u0c30\u0c02 \u0c30\u0c46\u0c02\u0c21\u0c41 \u0c26\u0c43\u0c37\u0c4d\u0c1f\u0c3f \u0c30\u0c47\u0c16\u0c32 \u0c2e\u0c27\u0c4d\u0c2f \u0c15\u0c4b\u0c23\u0c02 \u0c09\u0c2a\u0c2f\u0c4b\u0c17\u0c3f\u0c02\u0c1a\u0c3f \u0c32\u0c46\u0c15\u0c4d\u0c15\u0c3f\u0c02\u0c1a\u0c3f\u0c28\u0c26\u0c3f.</span><br />\r\n&nbsp;</p>\r\n\r\n<div style=\"text-align: center;\"><img alt=\"U3L4_Fig1\" src=\"/media/6/1/a/213c6d2c8f24fefddb7123efa77fe1378552818358a3104d2023d86d99e98.png\" style=\"border-width: 2px; border-style: solid; width: 400px;\" /></div>\r\n\r\n<p style=\"text-align: center;\"><span style=\"font-size:14px;\"><b>\u0c1a\u0c3f\u0c24\u0c4d\u0c30\u0c02 1: \u0c2a\u0c3e\u0c30\u0c32\u0c3e\u0c15\u0c4d\u0c38\u0c4d - \u0c30\u0c46\u0c02\u0c21\u0c41 \u0c35\u0c3f\u0c2d\u0c3f\u0c28\u0c4d\u0c28 \u0c26\u0c43\u0c36\u0c4d\u0c2f \u0c30\u0c47\u0c16\u0c32 \u0c28\u0c41\u0c02\u0c21\u0c3f \u0c1a\u0c42\u0c38\u0c3f\u0c28\u0c2a\u0c4d\u0c2a\u0c41\u0c21\u0c41 \u0c12\u0c15 \u0c35\u0c38\u0c4d\u0c24\u0c41\u0c35\u0c41\u0c32\u0c4b \u0c38\u0c4d\u0c2a\u0c37\u0c4d\u0c1f\u0c2e\u0c48\u0c28 \u0c38\u0c4d\u0c25\u0c3f\u0c24\u0c3f \u0c32\u0c4b \u0c24\u0c47\u0c21\u0c3e </b></span><br />\r\n&nbsp;</p>\r\n\r\n<p><br />\r\n<span style=\"font-size:14px;\">\u0c28\u0c15\u0c4d\u0c37\u0c24\u0c4d\u0c30\u0c3e\u0c32\u0c15\u0c41 \u0c38\u0c41\u0c28\u0c4d\u0c28\u0c3f\u0c24\u0c2e\u0c48\u0c28 \u0c30\u0c02\u0c17\u0c41\u0c32\u0c41 \u0c09\u0c02\u0c21\u0c1f\u0c02 \u0c2e\u0c40\u0c30\u0c41 \u0c17\u0c2e\u0c28\u0c3f\u0c02\u0c1a\u0c3f \u0c09\u0c02\u0c1f\u0c3e\u0c30\u0c41. \u0c15\u0c4a\u0c28\u0c4d\u0c28\u0c3f \u0c28\u0c15\u0c4d\u0c37\u0c24\u0c4d\u0c30\u0c3e\u0c32\u0c41 \u0c28\u0c40\u0c32\u0c02\u0c17\u0c3e \u0c2e\u0c30\u0c3f\u0c2f\u0c41 \u0c15\u0c4a\u0c28\u0c4d\u0c28\u0c3f \u0c0e\u0c30\u0c4d\u0c30\u0c17\u0c3e \u0c15\u0c28\u0c3f\u0c2a\u0c3f\u0c38\u0c4d\u0c24\u0c3e\u0c2f\u0c3f. \u0c12\u0c15 \u0c28\u0c15\u0c4d\u0c37\u0c24\u0c4d\u0c30\u0c02 \u0c2f\u0c4a\u0c15\u0c4d\u0c15 \u0c30\u0c02\u0c17\u0c41 \u0c06 \u0c28\u0c15\u0c4d\u0c37\u0c24\u0c4d\u0c30\u0c02 \u0c2f\u0c4a\u0c15\u0c4d\u0c15 \u0c09\u0c37\u0c4d\u0c23\u0c4b\u0c17\u0c4d\u0c30\u0c24\u0c28\u0c3f \u0c2c\u0c1f\u0c4d\u0c1f\u0c3f \u0c09\u0c02\u0c1f\u0c41\u0c02\u0c26\u0c3f. \u0c35\u0c47\u0c17\u0c3e \u0c32\u0c3e\u0c02\u0c1f\u0c3f \u0c28\u0c40\u0c32\u0c02\u0c17\u0c3e \u0c09\u0c28\u0c4d\u0c28 \u0c28\u0c15\u0c4d\u0c37\u0c24\u0c4d\u0c30\u0c02 \u0c2f\u0c4a\u0c15\u0c4d\u0c15 \u0c09\u0c37\u0c4d\u0c23\u0c4b\u0c17\u0c4d\u0c30\u0c24 \u0c0e\u0c30\u0c4d\u0c30\u0c28\u0c3f \u0c28\u0c15\u0c4d\u0c37\u0c24\u0c4d\u0c30\u0c3e\u0c32\u0c48\u0c28 \u0c2c\u0c46\u0c1f\u0c46\u0c32\u0c4d\u0c17\u0c42\u0c38\u0c4d \u0c15\u0c28\u0c4d\u0c28\u0c3e \u0c1a\u0c3e\u0c32\u0c3e \u0c0e\u0c15\u0c4d\u0c15\u0c41\u0c35. \u0c07\u0c2a\u0c4d\u0c2a\u0c41\u0c21\u0c41 \u0c28\u0c15\u0c4d\u0c37\u0c24\u0c4d\u0c30\u0c3e\u0c32\u0c15\u0c41 \u0c0e\u0c02\u0c26\u0c41\u0c15\u0c41 \u0c35\u0c3f\u0c2d\u0c3f\u0c28\u0c4d\u0c28 \u0c09\u0c37\u0c4d\u0c23\u0c4b\u0c17\u0c4d\u0c30\u0c24\u0c32\u0c41 \u0c09\u0c02\u0c1f\u0c3e\u0c2f\u0c3f? \u0c12\u0c15 \u0c28\u0c15\u0c4d\u0c37\u0c24\u0c4d\u0c30\u0c02 \u0c2f\u0c4a\u0c15\u0c4d\u0c15 \u0c09\u0c37\u0c4d\u0c23\u0c4b\u0c17\u0c4d\u0c30\u0c24 \u0c32\u0c47\u0c26\u0c3e \u0c12\u0c15 \u0c28\u0c15\u0c4d\u0c37\u0c24\u0c4d\u0c30\u0c02 \u0c09\u0c24\u0c4d\u0c2a\u0c24\u0c4d\u0c24\u0c3f \u0c1a\u0c47\u0c38\u0c47 \u0c36\u0c15\u0c4d\u0c24\u0c3f \u0c2a\u0c30\u0c3f\u0c2e\u0c3e\u0c23\u0c02 \u0c06 \u0c28\u0c15\u0c4d\u0c37\u0c24\u0c4d\u0c30\u0c02 \u0c2f\u0c4a\u0c15\u0c4d\u0c15 \u0c26\u0c4d\u0c30\u0c35\u0c4d\u0c2f\u0c30\u0c3e\u0c36\u0c3f \u0c2e\u0c30\u0c3f\u0c2f\u0c41 \u0c35\u0c2f\u0c38\u0c4d\u0c38\u0c41 \u0c2c\u0c1f\u0c4d\u0c1f\u0c3f \u0c09\u0c02\u0c1f\u0c41\u0c02\u0c26\u0c3f. </span><br />\r\n<br />\r\n<img alt=\"Watch\" src=\"/media/5/c/b/fb03254e4c83b2965312d98786c4a45116b1acc6eb4252512ac1f1fa00e30.svg\" video=\"\" width=\"50\" /><span style=\"font-size:14px;\">\u0c28\u0c15\u0c4d\u0c37\u0c24\u0c4d\u0c30\u0c3e\u0c32\u0c41 \u0c0e\u0c33\u0c3e \u0c0f\u0c30\u0c4d\u0c2a\u0c21\u0c24\u0c3e\u0c2f\u0c3f, \u0c05\u0c35\u0c3f \u0c0e\u0c1f\u0c41\u0c35\u0c02\u0c1f\u0c3f \u0c2e\u0c3e\u0c30\u0c4d\u0c2a\u0c41\u0c32\u0c15\u0c41 \u0c32\u0c4b\u0c28\u0c35\u0c41\u0c24\u0c3e\u0c2f\u0c3f \u0c2e\u0c30\u0c3f\u0c2f\u0c41 \u0c1a\u0c3f\u0c35\u0c30\u0c32\u0c4b \u0c35\u0c3e\u0c1f\u0c3f\u0c15\u0c3f \u0c0f\u0c2e\u0c3f \u0c1c\u0c30\u0c41\u0c17\u0c41\u0c24\u0c41\u0c02\u0c26\u0c4b \u0c24\u0c46\u0c32\u0c41\u0c38\u0c41\u0c15\u0c4b\u0c35\u0c21\u0c3e\u0c28\u0c3f\u0c15\u0c3f \u0c15\u0c4d\u0c30\u0c3f\u0c02\u0c26\u0c3f \u0c35\u0c40\u0c21\u0c3f\u0c2f\u0c4b \u0c1a\u0c42\u0c21\u0c02\u0c21\u0c3f!</span><br />\r\n\u0c2e\u0c30\u0c3f\u0c2f\u0c41 \u0c28\u0c4b\u0c1f\u0c4d\u0c2c\u0c41\u0c15\u0c4d\u0c32\u0c4b \u0c09\u0c28\u0c4d\u0c28 \u0c35\u0c40\u0c21\u0c3f\u0c2f\u0c4b\u0c2a\u0c48 \u0c2e\u0c40\u0c15\u0c41 \u0c06\u0c32\u0c4b\u0c1a\u0c28\u0c32\u0c28\u0c41 \u0c30\u0c3e\u0c2f\u0c02\u0c21\u0c3f<br />\r\n<span style=\"font-size:11px;\">(\u0c30\u0c3e\u0c2f\u0c21\u0c3e\u0c28\u0c3f\u0c15\u0c3f \u0c10\u0c15\u0c3e\u0c28\u0c4d \u0c2a\u0c48 \u0c15\u0c4d\u0c32\u0c3f\u0c15\u0c4d \u0c1a\u0c47\u0c2f\u0c02\u0c21\u0c3f)</span><br />\r\n<a href=\" /59b65b0f2c47962c1d001754/course/notebook/?create=True\" target=\"_blank\"><img alt=\"Enter\" answer=\"\" here=\"\" src=\"/media/7/1/2/3c5e1f84967ec527bd5bebbd2ce3b8208a4a417a1c3c6bb94d2cc0d34130b.svg\" style=\"width: 50px;\" /></a></p>\r\n\r\n<p style=\"text-align: center;\"><script type=\"text/javascript\" src=\"/static/ndf/bower_components/videojs/dist/video.min.js\"></script><script type=\"text/javascript\" src=\"/static/ndf/bower_components/videojs/dist/video.js\"></script></p>\r\n\r\n<div>\r\n<div class=\"video-player-area\" id=\"video-player-5a95272769602a0141a2e3c1\">\r\n<div class=\"vidbak\">\r\n<video class=\"video-js vjs-skin-colors-clix vjs-big-play-button center\" controls=\"controls\" data-setup=\"{ &quot;playbackRates&quot;: [0.5, 1, 1.5, 2] }\" height=\"360\" id=\"5a95272769602a0141a2e3c1\" width=\"480\"><source codecs=\"avc1.42E01E, mp4a.40.2\" crossorigin=\"anonymous\" preload=\"metadata\" src=\"/media/8/e/9/da083a644c5e694109cd685e8359b4d748353839aba3a934d552f48e11955.mp4\" type=\"video/mp4\" /> <script>\r\n\t\t\tfunction myFunction() { \r\n\t\t\t    var vid = document.getElementById(id);\r\n\t\t\t    document.getElementById(\"mySpan\").innerHTML = \"Seeking: \" + vid.seeking;\r\n\t\t\t} \r\n\t\t\tfunction togglerTranscript(a){\r\n                $(a).next().siblings(\".transcript-data\").toggleClass(\"hide\");\r\n            };\r\n         \r\n\t\t\t</script> <!-- adding captions in different language--></video>\r\n</div>\r\n</div>\r\n</div>\r\n\r\n<div style=\"text-align: center;\"><strong><span style=\"font-size:14px;\">\u0c28\u0c15\u0c4d\u0c37\u0c24\u0c4d\u0c30\u0c3e\u0c32 \u0c2e\u0c30\u0c23\u0c02</span></strong><br />\r\n<span style=\"font-size:12px;\">(\u0c35\u0c40\u0c21\u0c3f\u0c2f\u0c4b \u0c28\u0c41\u0c02\u0c21\u0c3f \u0c24\u0c40\u0c38\u0c41\u0c15\u0c4b\u0c2c\u0c21\u0c3f\u0c02\u0c26\u0c3f-https://www.spacetelescope.org/videos/hubblecast52a/)</span></div>\r\n\r\n<p dir=\"ltr\"><sup>4</sup>\u0c12\u0c15 \u0c35\u0c38\u0c4d\u0c24\u0c41\u0c35\u0c41\u0c28\u0c41 \u0c30\u0c46\u0c02\u0c21\u0c41 \u0c35\u0c3f\u0c2d\u0c3f\u0c28\u0c4d\u0c28 \u0c26\u0c43\u0c37\u0c4d\u0c1f\u0c3f \u0c30\u0c47\u0c16\u0c32 \u0c28\u0c41\u0c02\u0c21\u0c3f \u0c1a\u0c42\u0c38\u0c3f\u0c28\u0c2a\u0c4d\u0c2a\u0c41\u0c21\u0c41 \u0c26\u0c3e\u0c28\u0c3f \u0c35\u0c3e\u0c38\u0c4d\u0c24\u0c35 \u0c38\u0c4d\u0c25\u0c3f\u0c24\u0c3f\u0c32\u0c4b \u0c2e\u0c3e\u0c30\u0c4d\u0c2a\u0c41\u0c28\u0c3f \u0c2a\u0c3e\u0c30\u0c32\u0c3e\u0c15\u0c4d\u0c38\u0c4d \u0c05\u0c02\u0c1f\u0c3e\u0c30\u0c41.</p>\r\n",
    "content_org": "<p><span style=\"font-size:14px;\"><strong>Procedure:</strong></span></p>\r\n\r\n<ol>\r\n\t<li>Choose a wall which has some features (posters, windows etc.). Stand at least 10 feet away from the wall, facing towards it.</li>\r\n\t<li><span style=\"font-size:14px;\">Hold a pen in front of your nose, about 6 inches away from your face. Close one eye and notice a mark (say, mark X) on the wall close to it.</span></li>\r\n\t<li><span style=\"font-size:14px;\">Now close the other eye and open the one which was closed. Is the pen seen at the same position? No! It appears to be shifted. This is known as parallax. Notice the mark (say, mark Y) on the wall close to the pen.<sup>4</sup></span></li>\r\n\t<li><span style=\"font-size:14px;\">How far are Marks X and Y from each other?</span></li>\r\n\t<li><span style=\"font-size:14px;\">Now repeat steps 2 and 3 while holding the pen in your stretched hand. Did the distance between two marks remain same?</span></li>\r\n\t<li><span style=\"font-size:14px;\">You would notice that the distance between marks is more when the pen was closer. Thus parallax is more when the objects are closer.</span></li>\r\n</ol>\r\n\r\n<p><span style=\"font-size:14px;\">As you know, the Earth revolves around the Sun. So we get two vantage points from diametrically opposite sides of the Earth\u2019s orbit (positions A and B in <strong>Figure 1</strong>). When seen from Position A the Star S will appear close to Star Y. After 6 months, when seen from position B, Star S will appear closer to Star X. Very good quality instruments are needed to observe this change in position. The distance of a star from the Sun is calculated using the angle between the the two different lines of sight.</span></p>\r\n<br />\r\n<p style=\"text-align: center;\"><span style=\"font-size:14px;\"><b>Figure 1: Parallax - difference in the apparent position of an object viewed along two different lines of sight</b></span></p>\r\n\r\n<p><br />\r\n<span style=\"font-size:14px;\">You might have noticed that stars have subtle colours. Some stars look blueish and some stars look reddish. The colour of a star depends upon the temperature of the star. Temperature of bluish stars such as Vega is higher than the temperature of reddish stars such as Betelgeuse. Now why do stars have different temperatures? The temperature of a star or the amount of energy produced by a star depends upon mass and age of the star.<br />\r\n<br />\r\n<br />\r\nWatch the following video to learn about how stars are formed, what transformations they undergo, and what happens to them in the end!</span></p>\r\n\r\n<p dir=\"ltr\" id=\"docs-internal-guid-3094c94f-fabd-dc41-b915-c23fdbc5c8f7\"><span style=\"font-size:14px;\"><b>The Death of Stars: <a href=\"https://www.spacetelescope.org/videos/hubblecast52a/\" target=\"_blank\">https://www.spacetelescope.org/videos/hubblecast52a/</a></b></span></p>\r\n\r\n<p dir=\"ltr\"><span style=\"font-size:14px;\">Credit: ESA/Hubble</span></p>\r\n\r\n<p dir=\"ltr\"><span style=\"font-size:14px;\">Visual design and editing: Martin Kornmesser</span></p>\r\n\r\n<p dir=\"ltr\"><span style=\"font-size:14px;\">Web and technical support: Lars Holm Nielsen and Raquel Yumi Shida</span></p>\r\n\r\n<p dir=\"ltr\"><span style=\"font-size:14px;\">Written by: Oli Usher</span></p>\r\n\r\n<p dir=\"ltr\"><span style=\"font-size:14px;\">Narration: Joe Liske (Dr J)</span></p>\r\n\r\n<p dir=\"ltr\"><span style=\"font-size:14px;\">Images: NASA, ESA</span></p>\r\n\r\n<p dir=\"ltr\"><span style=\"font-size:14px;\">Animations: Martin Kornmesser</span></p>\r\n\r\n<p dir=\"ltr\"><span style=\"font-size:14px;\">Music: Zero Project</span></p>\r\n\r\n<p dir=\"ltr\"><span style=\"font-size:14px;\">Directed by: Oli Usher</span></p>\r\n\r\n<p><span style=\"font-size:14px;\">Executive Producer: Lars Lindberg Christensen</span></p>",
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