By varying the proportions of copper and zinc, the properties of the brass can be changed, allowing hard and soft brasses. The density of brass is approximately .303 lb/cubic inch, 8.4 to 8.73 grams per cubic centimetre.
Milk encourages the production of stomach acid and might promote acid reflux in the middle of the night. Raise the head of your bed four to six inches to avoid heartburn during sleep by using blocks under the bedposts. This raises your upper body. Extra pillows only raise your head.
Tips for night-time heartburn relief. Symptoms of heartburn during the night include waking up with a bitter taste in the mouth, a chronic cough, sore throat and fatigue. Food and drink tips for night-time heartburn relief. Reduce heartburn risk by limiting acidic foods such as grapefruit, oranges, tomatoes or vinegar.