Einstein changed the paradigm of time and space through a special theory of relativity
in 1905.
¾ÆÀν´Å¸ÀÎÀº 1905³â Ư¼ö »ó´ë¼º ÀÌ·ÐÀ» ÅëÇØ ½Ã°£°ú °ø°£¿¡ ´ëÇÑ ÆÐ·¯´ÙÀÓÀ» ¹Ù²ã¹ö·È´Ù.
It was revealed that the world was made of four-dimensional space-time, not
three-dimensional space.
¼¼»óÀº 3Â÷¿ø °ø°£ÀÌ ¾Æ´Ñ 4Â÷¿ø ½Ã°ø°£À¸·Î ÀÌ·ç¾îÁ³À½À» ¹àÇô³Â´Ù.
Einstein developed the general theory of relativity for 10 years after publishing the
special theory of relativity.
Ư¼ö »ó´ë¼º ÀÌ·ÐÀ» ¹ßÇ¥ÇÏ°í ³ª¼ 10³â°£ ¾ÆÀν´Å¸ÀÎÀº ÀÏ¹Ý »ó´ë¼º ÀÌ·ÐÀ» ¸¸µé¾ú´Ù.
In the special theory of relativity, he thought that four-dimensional space-time could
be bent as the length of time and space changed.
Ư¼ö »ó´ë¼º À̷п¡¼ ½Ã°£°ú °ø°£ÀÇ ±æÀ̰¡ º¯ÈÇÏ¿´µíÀÌ 4Â÷¿ø ½Ã°ø°£ÀÌ ÈÖ¾îÁú ¼ö
ÀÖ´Ù´Â »ý°¢À» ÇÏ¿´´Ù.
Einstein thought that mass warped space-time and interpreted it as gravity.
¾ÆÀν´Å¸ÀÎÀº Áú·®ÀÌ ½Ã°ø°£À» ÈÖ¾îÁö°Ô ¸¸µç´Ù°í »ý°¢ÇÏ¿´À¸¸ç ÀÌ ÈÖ¾îÁüÀÌ Áß·ÂÀ̶ó°í
ÇØ¼®ÇÏ¿´´Ù.
Einstein's field equation is a mathematical description of this.
¾ÆÀν´Å¸ÀÎÀÇ Àå ¹æÁ¤½ÄÀº À̸¦ ¼öÇÐÀûÀ¸·Î ±â¼úÇÑ ÇüÅÂÀÌ´Ù.
Mass creates the curvature of space-time.
Áú·®ÀÌ ½Ã°ø°£ÀÇ °î·üÀ» ¸¸µç´Ù.
If gravity is interpreted as the curvature of space-time, light can be affected by gravity.
Áß·ÂÀ» ½Ã°ø°£ÀÇ °î·ü·Î¼ ÇØ¼®ÇÑ´Ù¸é ºûÀº Áß·ÂÀÇ ¿µÇâÀ» ¹ÞÀ» ¼ö ÀÖ´Ù.
Indeed, this phenomenon was discovered by Arthur Eddington and is called
the gravitational lens phenomenon.
½ÇÁ¦·Î ÀÌ·¯ÇÑ Çö»óÀº ¾Æ¼ ¿¡µùÅÏ¿¡ ÀÇÇØ ¹ß°ßµÇ¾úÀ¸¸ç Áß·Â ·»Áî Çö»óÀ̶ó ºÎ¸¥´Ù.
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