翻訳と辞書 Words near each other ・ Rifle River State Recreation Area ・ Rifle Sport ・ Rifle Sport Gallery ・ Rifle troops ・ Rifle Volunteers ・ Rifle, Colorado ・ Rifled breech loader ・ Rifled musket ・ Riflemaker ・ Rifleman ・ Rifleman (bird) ・ Rifleman (disambiguation) ・ Rifleman Khan ・ Rifleman's Assault Weapon ・ Rifleman's Creed ・ Rifleman's rule ・ Riflemen's Association ・ Rifles for Watie ・ Rifles in the American Civil War ・ Rifles of the I.R.A. ・ Rifles of the I.R.A. (song) ・ Rifling ・ Rifnik ・ Rifnik Hill ・ Rifqa Bary controversy ・ RifRaf ・ Rifreddo ・ Rifriscolaro ・ Rifseria ・ Rifstangi Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Rifleman's rule ： ウィキペディア英語版 Rifleman's rule Rifleman's rule is a "rule of thumb" that allows a rifleman to accurately fire a rifle that has been calibrated for horizontal targets at uphill or downhill targets. The rule provides an equivalent horizontal range setting for engaging a target at a known uphill or downhill distance from the rifle (called the slant range). For a bullet to strike a target at a slant range of $R\_S$ and an incline of $\backslash alpha$, the rifle sight must be adjusted as if the shooter were aiming at a horizontal target at a range of $R\_H=R\_S\; \backslash cos(\backslash alpha)$. Figure 1 illustrates the shooting scenario. The rule holds for inclined and declined shooting (all angles measured with respect to horizontal). Strictly speaking, the rifleman's rule is an approximation and it holds generally only for the small angles typically involved in shooting. The rule is derived assuming that the bullet travels in a vacuum. However, empirical evidence suggests that the rule does appear to work with reasonable accuracy in air and with both bullets and arrows. ==Background== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Rifleman's rule」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.