Jesus' power going out What should one understand from  the NT verse  which  says :... Jesus realised that power had gone out from Him" (Mark 5:30)? Is it a figurative narration ? Or, is it a  casualty of translation ?
And Jesus, perceiving in himself that power had gone forth from him, immediately turned about in the crowd, and said, “Who touched my garments?” (RSV)


The word rendered as "power" is δύναμις (dynamis).  Luke (8:46) recounts a slightly different version, but using the same Greek word:


  Jesus said, “Some one touched me; for I perceive that power has gone forth from me.”


Although we think of "power" as some kind of energy or force, the word dynamis has a wider scope.  It translated on many occasions as "mighty works" in the King James, RSV, and other versions:

Matthew 7:22 (RSV)


  On that day many will say to me, ‘Lord, Lord, did we not prophesy in your name, and cast out demons in your name, and do many mighty works in your name?’


Mark 6:2


  And on the sabbath he began to teach in the synagogue; and many who heard him were astonished, saying, “Where did this man get all this? What is the wisdom given to him? What mighty works are wrought by his hands!


Luke 10:13


  “Woe to you, Chorazin! woe to you, Beth-saida! for if the mighty works done in you had been done in Tyre and Sidon, they would have repented long ago, sitting in sackcloth and ashes.


The power imparted to the woman in Mark 5:25ff is not "transferred" to her form some store of power that Jesus had, perhaps dispersed in some kind of quanta.  It is imparted without depleting anything from the source.  One Byzantine commentary drew a parallel with how "teaching" is imparted:


  Power goes out from Christ, not travelling from one location to another, but rather imparted to others while remaining in Christ undiminished.  It is the same with teachings, which remain with those who teach, and yet are imparted to those who learn.*




*  Theophylact of Ohrid (ca 1055-1107), Explanation of the Holy Gospel According to St. Mark (tr. from the Greek, Chrysostom Press, 1993), p.46.