## Gunnery: An Elementary Treatise, Including a Graphical Exposition of Field Artillery Fire |

### What people are saying - Write a review

We haven't found any reviews in the usual places.

### Other editions - View all

Gunnery: An Elementary Treatise; Including a Graphical Exposition of Field ... Jennings Cropper Wise No preview available - 2017 |

Gunnery: An Elementary Treatise; Including a Graphical Exposition of Field ... Jennings Cropper Wise No preview available - 2018 |

### Common terms and phrases

acid action actual adjustment aiming point angle appears artillery base battery bracket burst called cause commander contains correct corrector cover crest curve decimal deflection denominator determined direction distance effect elevation employed enemy equal error experience explosive extends fall feet field field artillery Figure FIND fire force fraction front give given greater ground guncotton guns hand heat height height of burst increase infantry latter less marked means measured method military mils moving natural necessary nitroglycerin normal object obliquity observer obtained officer parallax pass piece placed position possible powder practice pressure PROBLEMS projectile quantity range rear reduced respect result rule salvo secured seen shell short shot shrapnel side sight smoke square station surface taken target tion trajectory unit usually visible yards

### Popular passages

Page 42 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.

Page 39 - A circle is a plane figure bounded by a curved line, every point of which is equally distant from a point within called the center.

Page 7 - An improper fraction is one whose numerator is equal to or greater than its denominator as...

Page 14 - Place the numbers to be added so that the decimal points will be directly under each other. Add as in whole numbers, and place the decimal point in the sum directly under the decimal points above.

Page 7 - To reduce a mixed number to an improper fraction, — RULE : Multiply the whole number by the denominator of the fraction, to the product add the numerator, and write the result over the denominator.

Page 32 - ... and to the remainder bring down the next period for a dividend. 3. Place the double of the root already found, on the left hand of the dividend for a divisor. 4. Seek how often the divisor is contained...

Page 32 - Multiply the divisor, thus augmented, by the last figure of the root, and subtract the product from the dividend, and to the remainder bring down the next period for a new dividend.

Page 211 - ... estimates are usually too small and cause delay through an effort to correct the fire by making timid and insufficient changes in the range. Attention should rather be concentrated on deciding, from careful observation of each shot, upon the sense of a number of shots fired with the same range and site, and on quickly inclosing the target with fire which is surely short and fire which is surely over. By narrowing the bracket thus determined effective adjustment may be secured.

Page 212 - If the target is indistinct and of about the same color as the smoke, it may be less visible against the smoke as a background. A burst beyond the target may, for this reason, sometimes seem to obscure the target, and hence be judged short, when it is in reality over. On the other hand, some targets become very much more visible if projected against a smoke background.

Page 32 - TRUE DIVISOR. Multiply the true divisor by the last root figure, subtract the product from the dividend, and to the remainder annex the next period for a dividend.