However, it was learned at the Mark I and subsequent experiments that most fundamental particle interactions at colliders involve very large exchanges of energy and therefore large transverse momenta are not uncommon; for this reason, large angular coverage is critical for modern particle physics.
haʊˈɛvɚ, ɪt wʌz lˈɜːnd æt ðə mˈɑːɹk aɪ ænd sˈʌbsᵻkwənt ɛkspˈɛɹɪmənts ðæt mˈoʊst fˌʌndəmˈɛntəl pˈɑːɹɾɪkəl ˌɪntɚɹˈækʃənz æt kəlˈaɪdɚz ɪnvˈɑːlv vˈɛɹi lˈɑːɹdʒ ɛkstʃˈeɪndʒᵻz ʌv ˈɛnɚdʒi ænd ðˈɛɹfoːɹ lˈɑːɹdʒ tɹænsvˈɜːs moʊmˈɛntə ɑːɹ nˌɑːt ʌŋkˈɑːmən; fɔːɹ ðɪs ɹˈiːzən, lˈɑːɹdʒ ˈæŋɡjʊlɚ kˈʌvɚɹɪdʒ ɪz kɹˈɪɾɪkəl fɔːɹ mˈɑːdɚn pˈɑːɹɾɪkəl fˈɪzɪks.