Gradians feem ntau yog siv rau hauv surveying (tshwj xeeb hauv Europe), thiab tsawg dua hauv kev mining thiab geology. Raws li lub Tsib Hlis 2020, lub gon yog qhov chaw raug cai ntawm kev ntsuas hauv European Union thiab hauv Switzerland. Cov gradian tsis yog ib feem ntawm International System of Units (SI).
Radian siv rau dab tsi?
Radians feem ntau siv hloov cov degrees thaum ntsuas cov kaum. Nyob rau hauv degrees ib tug ua tiav kiv puag ncig ntawm ib lub voj voog yog 360◦, tab sis nyob rau hauv radians nws yog 2π. Yog hais tias ib tug arc ntawm ib lub voj voog yog kos li hais tias lub vojvoog yog tib ntev li lub arc, lub kaum sab xis tsim yog 1 Radian (raws li qhia hauv qab no).
Leej twg invented Gradians?
Taw qhia. Ib tug gradian txhais ua 1/400 ntawm tag nrho lub voj voog. Nws tseem hu ua qib lossis qib kawm. Tus gradian originated nyob rau hauv Fabkis, nrog rau kev taw qhia ntawm lub metric system, nrog rau kev ntsuas zoo li lub centigrade.
Puas muaj Gradians nyob hauv ib lub voj voog?
Ib chav ntsuas angular uas lub kaum sab xis ntawm tag nrho lub voj voog yog 400 gradians. Yog li lub kaum sab xis yog 100 gradians. Ib tug gradian qee zaum kuj hu ua gon lossis qib.
Puas metric system siv qib?
Rau ntau lub hom phiaj kev tshawb fawb, qhov thib ob yog tib chav siv los ntsuas lub sijhawm. … Lwm chav tsev yog meters ib ob (m/s). Chav ntsuas kub (degrees Celsius lossis Centigrade): Qhov ntsuas qhov ntsuas kub nruab nrab yog qhov Celsius degree (°C), thiabhu ua Centigrade degree.