DUPLICATE OF A RATIO
\djˈuːplɪkˌe͡ɪt əvə ɹˈe͡ɪʃɪˌə͡ʊ], \djˈuːplɪkˌeɪt əvə ɹˈeɪʃɪˌəʊ], \d_j_ˈuː_p_l_ɪ_k_ˌeɪ_t ə_v_ə ɹ_ˈeɪ_ʃ_ɪ__ˌəʊ]\
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If three magnitudes are in continued proportion, the ratio of the first to the third is the duplicate or double of the ratio of the first to the second. The duplicate of the ratio of two numbers is the ratio of their squares ; thus, 16 : 25 is the duplicate of the ratio of 4 : 5.
By Henry Percy Smith
Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.