Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Mashoko anokosha: Chiito chewachi yacho chinozivikanwa nokuda kwokuvimbika kwacho. Vagadziri vacho vakanga vari gweta uye nyanzvi yokuzvivaraidza yokugadzira wachi Edmund Beckett Denison, naGeorge Airy, Nyanzvi Yokuongorora Nyeredzi yoUmambo. Kuvakwa kwacho kwakapiwa mugadziri wemaawa Edward John Dent; pashure porufu rwake muna 1853 mwanakomana wake wokurera Frederick Dent akapedza basa racho, muna 1854. Sezvo shongwe yacho yakanga isati yapera kusvikira muna 1859, Denison akanga ane nguva yokuedza: panzvimbo pokushandisa nzira yokubuda nayo uye remontoire sezvakanga zvagadzirirwa pakutanga, Denison akagadzira nzira yokubudisa nayo mbiri ine makumbo matatu. Kupukunyuka uku kunogovera kuparadzana kwakanakisisa pakati pependulum nemaitiro eawa. Pendulum yacho yakaiswa mubhokisi risingapindi mhepo riri pasi peimba inochengeterwa wachi. Yakareba mamita 4,0 uye inorema makirogiramu 300, yakaturikwa pamutsetse wesimbi yakakora masendimita masere, uye inorova masekondi maviri oga oga. Chishandiso chewachi chiri mukamuri riri pasi apa chinorema matani mashanu.  Mubvunzo: Dudza zita romumwe we magweta.
Edmund Beckett Denison