text_original: We can control also the power of the electromagnet, that is, the size of the load it will lift. The man who taught us how to do this was Joseph Henry, an American, Instead of varnishing the iron core as Sturgeon had done, ELECTRIC ENGINE AND ELECTRIC LOCOMOTIVE 79 to keep the electricity from flowing off, or to insulate it, Henry insulated the copper wire by covering it with a wrapping of silk. Instead of putting a single turn of wire round the iron core, he put many turns.
text_transcription: WE CAN CONTROL ALSO THE POWER OF THE ELECTRO MAGNET THAT IS THE SIZE OF THE LOAD IT WILL LIFT THE MAN WHO TAUGHT US HOW TO DO THIS WAS JOSEPH HENRY AN AMERICAN INSTEAD OF VARNISHING THE IRON CORE AS STURGEON HAD TO KEEP THE ELECTRICITY FROM FLOWING OFF OR TO INSULATE IT HENRY INSULATED THE COPPER WIRE BY COVERING IT WITH A WRAPPING OF SILK INSTEAD OF PUTTING A SINGLE TURN OF WIRE ROUND THE IRON CORE HE PUT MANY TURNS
phonemes: wiː kæn kəntɹˈoʊl ˈɔːlsoʊ ðə pˈaʊɚɹ ʌvðɪ ɪlˌɛktɹoʊmˈæɡnɪt, ðæt ˈɪz, ðə sˈaɪz ʌvðə lˈoʊd ɪt wɪl lˈɪft. ðə mˈæn hˌuː tˈɔːt ˌʌs hˌaʊ tə dˈuː ðɪs wʌz dʒˈoʊsəf hˈɛnɹi, ɐn ɐmˈɛɹɪkən, ɪnstˈɛd ʌv vˈɑːɹnɪʃɪŋ ðɪ ˈaɪɚn kˈɔːɹ æz stˈɜːdʒən hæd dˈʌn, ᵻlˈɛktɹɪk ˈɛndʒɪn ænd ᵻlˈɛktɹɪk lˌoʊkəmˈoʊɾɪv sˈɛvənti nˈaɪn tə kˈiːp ðɪ ᵻlɛktɹˈɪsᵻɾi fɹʌm flˈoʊɪŋ ˈɔf, ɔːɹ tʊ ˈɪnsəlˌeɪt ɪt, hˈɛnɹi ˈɪnsəlˌeɪɾᵻd ðə kˈɑːpɚ wˈaɪɚ baɪ kˈʌvɚɹɪŋ ɪt wɪð ɐ ɹˈæpɪŋ ʌv sˈɪlk. ɪnstˈɛd ʌv pˈʊɾɪŋ ɐ sˈɪŋɡəl tˈɜːn ʌv wˈaɪɚ ɹˈaʊnd ðɪ ˈaɪɚn kˈɔːɹ, hiː pˌʊt mˈɛni tˈɜːnz.