Cod liver oil was considered highly valuable for its healing characteristics, as well as for giving increased strength and energy. Not only was the oil consumed, but it was also rubbed on sore joints and muscles to provide some relief. It was claimed to cure gout and rickets, among other illnesses. By the time the mid 1700s rolled around, it was also used in lamp oil, soap, paint, and leather tanning. Cod liver oil consumption reached its height in the first half of the 20th century all over the world.
Some detergents barely work at all for making bubbles while others work great. Detergent is a key ingredient in most do-it-yourself bubble juice recipes. The detergent is usually of the type called dishwashing liquid in the U.S. or washing-up liquid in the UK. These are the types of detergents used for hand washing dishes. Strength. Detergent strength varies considerably from detergent type to detergent type.
Several bubbles make a foam. A soap bubble is an extremely thin film of soapy water enclosing air that forms a hollow sphere with an iridescent surface. Soap bubbles usually last for only a few seconds before bursting, either on their own or on contact with another object. They are often used for children's enjoyment, but they are also used in artistic performances. Assembling several bubbles results in a foam. When light shines onto a bubble it appears to change colour. Unlike those seen in a rainbow, which arise from diff