The concept of zero-point energy was developed in Germany by Albert Einstein and Otto Stern in 1913.
ð ə WORD_BOUNDARY k ɑ n s ɛ p t WORD_BOUNDARY ʌ v WORD_BOUNDARY z iə ɹ oʊ p ɔɪ n t WORD_BOUNDARY ɛ n ə ɹ d̠ʒ i WORD_BOUNDARY w ʌ z WORD_BOUNDARY d ɪ v ɛ l ə p t WORD_BOUNDARY ɪ n WORD_BOUNDARY d̠ʒ ɜː m ə n i WORD_BOUNDARY b aɪ WORD_BOUNDARY æ l b ə ɹ t WORD_BOUNDARY aɪ n s t aɪ n WORD_BOUNDARY æ n d WORD_BOUNDARY ɑ t oʊ WORD_BOUNDARY s t ɜː n WORD_BOUNDARY ɪ n WORD_BOUNDARY n aɪ n t iː n h ʌ n d ɹ ɪ d WORD_BOUNDARY θ ɜː t iː n WORD_BOUNDARY